# GÜNEYSS

> GÜNEYSS has manufactured and supplied AISI 316/316L stainless steel hydraulic fittings in Tuzla, Istanbul (Türkiye) since 2020: stainless fittings, nipples, hose fittings and hose assemblies, SAE flange systems, ball valves and check valves, instrumentation fittings, stainless pipes and flanges, and custom CNC parts made from drawings or samples. It offers sector-specific solutions for marine and shipping, shipyards and ship repair, offshore and drilling, oil and gas, the defense industry, aviation, chemical processing, food and beverage, rolling mills and heavy industry, mining and mineral processing, fire suppression systems, and paper and board mills.

Key facts:

- Founded: 2020, Tuzla, Istanbul
- Material: AISI 316 / 316L stainless steel (round bar, hex bar and tube stock)
- Connection standards: BSPP/BSPT, NPT, UNF/JIC and metric threads; SAE flanges Code 61 (3000 PSI) and Code 62 (6000 PSI)
- Production: raw material inspection, cutting, CNC machining, cleaning, dimension/thread/sealing inspection, packaging and shipping
- Lead times: stock items typically ready to ship within 1-3 business days; standard production 5-10 business days; custom sizes and project work 10-20 business days after technical approval
- Contact: Faik Güney (Contact person) · Phone / WhatsApp: +90 545 206 13 74 · Email: info@guneyss.com · Tuzla, Istanbul
- Quote requests: https://www.guneyss.com/en/request-quote/ (with size, thread standard, quantity, working pressure and temperature, fluid, installation orientation, and a photo of the sample or drawing)

## Sectors

- [Marine & Shipping](https://www.guneyss.com/en/sectors/marine-shipping/): AISI 316L fittings, hose assemblies, SAE flanges and valves built to withstand salt spray and vibration on deck cranes, windlasses, steering gear, passerelles and engine room lines.
- [Shipyards & Ship Repair](https://www.guneyss.com/en/sectors/shipyards-ship-repair/): Stainless steel pipe, flanges, fittings and hose assemblies, from newbuild piping circuits to drydock overhauls; fast spares from stock for ship crane service teams.
- [Offshore & Drilling](https://www.guneyss.com/en/sectors/offshore-drilling/): AISI 316L hose ends, SAE flanges, adapters and valves for crane, pipe handling, deck machinery and power unit lines on drillships and platforms.
- [Oil & Gas](https://www.guneyss.com/en/sectors/oil-gas/): 316L twin-ferrule fittings, needle valves, check valves and tubing for wellhead control panels, chemical injection, refinery instrument and sampling lines, and pipeline stations.
- [Defense Industry](https://www.guneyss.com/en/sectors/defense-industry/): SAE flanges, adapters, elbows and hose fittings CNC-machined after technical drawing approval for mobile hydraulic systems, maintenance benches and compact power units.
- [Aviation](https://www.guneyss.com/en/sectors/aviation/): Compact AISI 316/316L fittings with clean threads and sealing surfaces for ground support equipment, hydraulic test benches and maintenance workshops.
- [Chemical Processing](https://www.guneyss.com/en/sectors/chemical-processing/): Stainless steel fittings, nipples, valves, flanges and hose fittings for chemical transfer and process lines, selected by weighing fluid compatibility, corrosion resistance, temperature and pressure together.
- [Food & Beverage](https://www.guneyss.com/en/sectors/food-beverage/): AISI 316/316L fittings, nipples, valves, flanges and hose assemblies for food and beverage lines that call for cleanable surfaces, corrosion resistance and maintenance access.
- [Rolling Mills & Heavy Industry](https://www.guneyss.com/en/sectors/rolling-mills-heavy-industry/): High-pressure hose ends, SAE flanges and adapters built for the high cycling, heat and vibration of presses, mill rolls and hydraulic power units; supplied from stock for emergency maintenance.
- [Mining & Mineral Processing](https://www.guneyss.com/en/sectors/mining-mineral-processing/): AISI 316L hose ends, SAE flanges, adapters and valves selected for mine water, vibration and abrasion on underground and open-pit machinery, crushing and screening, flotation, leaching and drainage lines.
- [Fire Suppression Systems](https://www.guneyss.com/en/sectors/fire-suppression-systems/): Neatly laid out, leak-tight stainless steel nipples, fittings, hose assemblies and flange connections that make servicing easier on fire pump sets, control skids and pressurized auxiliary lines.
- [Paper & Board Mills](https://www.guneyss.com/en/sectors/paper-board-mills/): Elbows, tees, adapters, hose fittings and SAE flanges that cut maintenance time for continuously running hydraulic systems on corrugator, roll, cutting and actuator lines.

## Services

- [Stainless Steel Pipe Fabrication](https://www.guneyss.com/en/services/stainless-steel-pipe-fabrication/): Welded and demountable stainless steel lines built from AISI 316/316L pipe, flanges and fittings: bevel preparation matched to wall thickness, axial alignment, welding to project specifications and post-weld surface…
- [Hydraulic Hose Assemblies](https://www.guneyss.com/en/services/hydraulic-hose-assemblies/): Hydraulic hose assembly and crimping: hose assemblies with straight, 45° and 90° stainless steel ends in BSP, JIC, NPT, metric and SAE flange (ORFS on request), delivered ready to install with controlled crimping and…
- [Stainless Steel CNC Machining](https://www.guneyss.com/en/services/stainless-steel-cnc-machining/): Thread profiles, sealing cones, wrench flats and connection geometry are machined from AISI 316/316L bar on CNC machines to the tolerances on the technical drawing, with repeatable dimensions in series production.
- [Custom Parts from Drawings & Samples](https://www.guneyss.com/en/services/custom-parts-from-drawings-samples/): Where a standard product is not the answer: custom adapters, nipples, flange blocks and transition parts made from a sample, technical drawing or dimensions, with series production after written confirmation and first…
- [Control Panel & HPU Tubing](https://www.guneyss.com/en/services/control-panel-hpu-tubing/): Orderly, labeled and service-friendly connections with stainless steel tube and fittings on control panels, power units and test benches: gauge and test point connections, valve groups and bulkhead penetrations.
- [Steering Gear & Actuator Parts](https://www.guneyss.com/en/services/steering-gear-actuator-parts/): Stainless steel hydraulic fittings and hose assemblies for ship and boat steering systems and for passerelle, crane and hatch cover actuation; manufacturability review for parts such as pins, bushings and rod ends based…
- [Valves, Check Valves & Flow Control](https://www.guneyss.com/en/services/valves-check-valves-flow-control/): Selection of AISI 316L-body ball valves, needle valves and check valves by body, connection standard, bore size, pressure, temperature and fluid; placement in the line with flow direction and service access in mind.
- [Instrumentation Tubing](https://www.guneyss.com/en/services/instrumentation-tubing/): AISI 316/316L tube with twin-ferrule union, elbow, tee, connector and adapter fittings for small-bore measurement, control and sample lines; installed with clean tube cuts and the correct number of wrench turns.
- [Fitting & Thread Identification](https://www.guneyss.com/en/services/fitting-thread-identification/): Identifying BSP, NPT, UNF/JIC and metric threads by measurement, matching them correctly to the mating part, and selecting the right sealing method for the application from O-ring, bonded seal, cone seat or thread…
- [Fast Supply & Shutdown Support](https://www.guneyss.com/en/services/fast-supply-shutdown-support/): Standard stainless steel fittings, adapters, hose ends, flanges and valves ready to ship within an average of 1-3 business days, depending on stock; packed separately by product group and size, with protective caps on…

## Product groups and products

- [Stainless Steel Hydraulic Fittings](https://www.guneyss.com/en/products/stainless-steel-hydraulic-fittings/): Straight, elbow and tee fittings; BSP, NPT, UNF/JIC and metric thread options, bulkhead fittings and weld nipples. AISI 316/316L.
  - [DIN 2353 Compression Fittings](https://www.guneyss.com/en/products/din-2353-compression-fittings/): Stainless 24° cone compression fittings to DIN 2353 / ISO 8434-1: straight couplings, elbows, tees, bulkhead couplings and male stud connectors.
    - [Straight Coupling (24° Cone)](https://www.guneyss.com/en/product/straight-coupling-24-cone/): DIN 2353 / ISO 8434-1 (24° cone) · AISI 316L
    - [Equal Elbow 90° (24° Cone)](https://www.guneyss.com/en/product/equal-elbow-90-24-cone/): DIN 2353 / ISO 8434-1 (24° cone) · AISI 316L
    - [Equal Tee (24° Cone)](https://www.guneyss.com/en/product/equal-tee-24-cone/): DIN 2353 / ISO 8434-1 (24° cone) · AISI 316L
    - [Male Branch Tee (BSPT)](https://www.guneyss.com/en/product/male-branch-tee-bspt/): ISO 8434-1 (24° cone) / ISO 7-1 (BSPT) · AISI 316L
    - [Male Stud Connector (BSPP)](https://www.guneyss.com/en/product/male-stud-connector-bspp/): ISO 8434-1 (24° cone) / ISO 228-1 (BSPP) · AISI 316L
    - [Bulkhead Coupling with Locknut](https://www.guneyss.com/en/product/bulkhead-coupling-with-locknut/): DIN 2353 / ISO 8434-1 (24° cone) · AISI 316L
    - [Male Stud Elbow (NPT)](https://www.guneyss.com/en/product/male-stud-elbow-npt/): ISO 8434-1 (24° cone) / ASME B1.20.1 (NPT) · AISI 316L
  - [JIC 37° Fittings & Adapters](https://www.guneyss.com/en/products/jic-37-fittings-adapters/): UNF-threaded adapters, fittings, plugs and caps with JIC 37° flare seats; options with BSP and NPT conversions.
    - [JIC Male x JIC Male Adapter](https://www.guneyss.com/en/product/jic-male-x-jic-male-adapter/): SAE J514 (JIC 37°) · AISI 316L
    - [JIC 37° to NPT Adapter](https://www.guneyss.com/en/product/jic-37-to-npt-adapter/): SAE J514 (JIC 37°) / ASME B1.20.1 (NPT) · AISI 316L
    - [JIC 37° to BSPP Adapter](https://www.guneyss.com/en/product/jic-37-to-bspp-adapter/): SAE J514 (JIC 37°) / ISO 228-1 (BSPP) · AISI 316L
    - [JIC Male x Female Swivel 90° Elbow](https://www.guneyss.com/en/product/jic-male-x-female-swivel-90-elbow/): SAE J514 (JIC 37°) · AISI 316L
    - [JIC 37° Plug & Cap](https://www.guneyss.com/en/product/jic-37-plug-cap/): SAE J514 (JIC 37°) · AISI 316L
    - [JIC Male x ORB Male Adapter](https://www.guneyss.com/en/product/jic-male-x-orb-male-adapter/): SAE J514 (JIC 37°) / ISO 11926 (O-ring port) · AISI 316L
  - [BSP / NPT Adapters & Nipples](https://www.guneyss.com/en/products/bsp-npt-adapters-nipples/): BSPP, BSPT and NPT threaded hex nipples, reducing adapters, conversion adapters and hex plugs.
    - [BSP Male Reducing Adapter (60° Cone)](https://www.guneyss.com/en/product/bsp-male-reducing-adapter-60-cone/): ISO 228-1 (BSPP) — 60° cone seat · AISI 316L
    - [BSP Male x NPT Male Adapter](https://www.guneyss.com/en/product/bsp-male-x-npt-male-adapter/): ISO 228-1 / ISO 7-1 (BSP) · ASME B1.20.1 (NPT) · AISI 316L
    - [NPT Reducing Bushing](https://www.guneyss.com/en/product/npt-reducing-bushing/): ASME B1.20.1 (NPT) · AISI 316L
    - [BSPT Hex Plug](https://www.guneyss.com/en/product/bspt-hex-plug/): ISO 7-1 (BSPT) · AISI 316L
    - [BSPT Hex Nipple](https://www.guneyss.com/en/product/bspt-hex-nipple/): ISO 7-1 (BSPT) · AISI 316L
    - [BSPP Reducing Adapter, Bonded Seal](https://www.guneyss.com/en/product/bspp-reducing-adapter-bonded-seal/): ISO 228-1 (BSPP) · AISI 316L (body)
  - [Weld Nipples & Weld Fittings](https://www.guneyss.com/en/products/weld-nipples-weld-fittings/): Weld nipple sets, 24° weld nipples with O-ring, weld-in bulkhead couplings and weld elbows; they add a removable connection to a welded line.
    - [Weld Nipple Coupling Set](https://www.guneyss.com/en/product/weld-nipple-coupling-set/): DIN 2353 / ISO 8434-1 (24° cone) · AISI 316L
    - [Weld-In Bulkhead Coupling](https://www.guneyss.com/en/product/weld-in-bulkhead-coupling/): DIN 2353 / ISO 8434-1 (24° cone) · AISI 316L
    - [Weld Elbow 90° (24° Cone)](https://www.guneyss.com/en/product/weld-elbow-90-24-cone/): DIN 2353 / ISO 8434-1 (24° cone) · AISI 316L
    - [24° Weld Nipple with O-Ring](https://www.guneyss.com/en/product/24-weld-nipple-with-o-ring/): DIN 2353 / ISO 8434-1 (24° cone) · AISI 316L
- [Hose Fittings & Ferrules](https://www.guneyss.com/en/products/hose-fittings-ferrules/): Straight, 45° and 90° stainless steel hose fittings; BSP, JIC/UNF, NPT, metric and SAE flange ends, ORFS ends on request, and ferrules matched to the hose type.
  - [BSP Female Swivel 90° Hose Fitting](https://www.guneyss.com/en/product/bsp-female-swivel-90-hose-fitting/): ISO 228-1 (BSPP) — 60° cone seat · AISI 316L
  - [JIC Female Swivel Hose Fitting](https://www.guneyss.com/en/product/jic-female-swivel-hose-fitting/): SAE J514 (JIC 37°) · AISI 316L
  - [ORFS Female Swivel Nut Hose Fitting](https://www.guneyss.com/en/product/orfs-female-swivel-nut-hose-fitting/): SAE J1453 / ISO 8434-3 (ORFS) · AISI 316L
  - [SAE Flange 90° Hose Fitting (Code 61)](https://www.guneyss.com/en/product/sae-flange-90-hose-fitting-code-61/): ISO 6162-1 (SAE Code 61) · AISI 316L
  - [Metric DKOL Hose Fitting (L Series)](https://www.guneyss.com/en/product/metric-dkol-hose-fitting-l-series/): ISO 8434-1 (24° cone, L series) · AISI 316L
  - [Hose Ferrule (2SN)](https://www.guneyss.com/en/product/hose-ferrule-2sn/): EN 853 (for 2SN hose) · AISI 316L
  - [Banjo Fitting and Bolt](https://www.guneyss.com/en/product/banjo-fitting-and-bolt/): AISI 316L
- [SAE Flanges (Code 61 / 62)](https://www.guneyss.com/en/products/sae-flanges-code-61-62/): ISO 6162 / SAE J518 Code 61 (3000 PSI) and Code 62 (6000 PSI) flanges, split flanges, clamps, mating flanges and flange blocks.
  - [SAE Code 61 Split Flange Clamp](https://www.guneyss.com/en/product/sae-code-61-split-flange-clamp/): ISO 6162-1 (SAE Code 61) · AISI 316L
  - [SAE Code 62 Flange](https://www.guneyss.com/en/product/sae-code-62-flange/): ISO 6162-2 (SAE Code 62) · AISI 316L
  - [SAE Blind Flange](https://www.guneyss.com/en/product/sae-blind-flange/): ISO 6162-1 / ISO 6162-2 · AISI 316L
  - [SAE Flange Block](https://www.guneyss.com/en/product/sae-flange-block/): ISO 6162-1 / ISO 6162-2 (SAE flange ports) · AISI 316L
- [Ball, Needle & Check Valves](https://www.guneyss.com/en/products/ball-needle-check-valves/): Stainless steel ball valves, high-pressure needle valves and check valves; BSP/NPT and project-specific connection options.
  - [High-Pressure Stainless Ball Valve](https://www.guneyss.com/en/product/high-pressure-stainless-ball-valve/): AISI 316L body
  - [Stainless Steel Needle Valve](https://www.guneyss.com/en/product/stainless-steel-needle-valve/): AISI 316L body
  - [Stainless Steel Spring Check Valve (Threaded)](https://www.guneyss.com/en/product/stainless-steel-spring-check-valve-threaded/): AISI 316L body
- [Twin Ferrule Instrumentation Fittings](https://www.guneyss.com/en/products/twin-ferrule-instrumentation-fittings/): Twin ferrule straight unions, union elbows, union tees, male connectors and adapters for small-diameter measurement, control and sample lines.
  - [Twin Ferrule Straight Union](https://www.guneyss.com/en/product/twin-ferrule-straight-union/): AISI 316 / 316L
  - [Twin Ferrule Union Elbow 90°](https://www.guneyss.com/en/product/twin-ferrule-union-elbow-90/): AISI 316 / 316L
  - [Twin Ferrule Union Tee](https://www.guneyss.com/en/product/twin-ferrule-union-tee/): AISI 316 / 316L
  - [Twin Ferrule Male Connector (NPT)](https://www.guneyss.com/en/product/twin-ferrule-male-connector-npt/): ASME B1.20.1 (NPT thread end) · AISI 316 / 316L
- [Stainless Steel Pipes & Flanges](https://www.guneyss.com/en/products/stainless-steel-pipes-flanges/): Seamless and welded stainless steel pipes; weld neck, slip-on and blind flanges, gasket and bolt sets.
  - [Weld Neck Flange](https://www.guneyss.com/en/product/weld-neck-flange/): EN 1092-1 / ASME B16.5 (flange) · AISI 316 / 316L
  - [Blind Flange](https://www.guneyss.com/en/product/blind-flange/): EN 1092-1 / ASME B16.5 (flange) · AISI 316 / 316L
  - [Seamless Stainless Steel Hydraulic Tube](https://www.guneyss.com/en/product/seamless-stainless-steel-hydraulic-tube/): AISI 316L
- [Butt-Weld Pipe Fittings](https://www.guneyss.com/en/products/butt-weld-pipe-fittings/): Butt-weld stainless steel elbows, equal and reducing tees, concentric and eccentric reducers; they form the geometry of the pipeline.
  - [Butt-Weld Elbow 90°](https://www.guneyss.com/en/product/butt-weld-elbow-90/): ASME B16.9 (butt-weld fittings) · AISI 316 / 316L
  - [Butt-Weld Equal Tee](https://www.guneyss.com/en/product/butt-weld-equal-tee/): ASME B16.9 (butt-weld fittings) · AISI 316 / 316L
  - [Concentric Reducer](https://www.guneyss.com/en/product/concentric-reducer/): ASME B16.9 (butt-weld fittings) · AISI 316 / 316L
- [Quick Disconnect Couplings](https://www.guneyss.com/en/products/quick-disconnect-couplings/): Stainless steel BSP quick disconnect couplings for tool-free connection on lines that are disconnected and reconnected frequently. Type and size are confirmed per request.
  - [Quick Disconnect Coupling (BSP)](https://www.guneyss.com/en/product/quick-disconnect-coupling-bsp/): AISI 316
- [Custom-Made Hydraulic Parts](https://www.guneyss.com/en/products/custom-made-hydraulic-parts/): Custom adapters, nipples, flange blocks and transition parts made from samples or technical drawings; critical dimensions are confirmed in writing, and series production starts after first article approval.
  - [Custom Hydraulic Adapter](https://www.guneyss.com/en/product/custom-hydraulic-adapter/): AISI 316 / 316L — as specified
  - [Custom Hydraulic Manifold Block](https://www.guneyss.com/en/product/custom-hydraulic-manifold-block/): AISI 316 / 316L — as specified

## Knowledge Center

- [What Affects Lead Time: Stock, Standard and Custom-Made Fittings](https://www.guneyss.com/en/knowledge-center/what-affects-lead-time-stock-standard-and-custom-made-fittings/): Stock items are prepared within an average of 1-3 business days, standard production within 5-10 business days, hose assemblies made to length within 5-15 business days, and custom-size and project parts within 10-20…
- [Twin Ferrule Instrumentation Fittings: Installation Guide](https://www.guneyss.com/en/knowledge-center/twin-ferrule-instrumentation-fittings-installation-guide/): In a twin-ferrule fitting, the front ferrule provides the seal and the back ferrule grips the tube. For correct installation, the tube is cut square, deburred and pushed all the way to the bottom of the body, and the…
- [Selecting Flanges and Fittings for Stainless Steel Piping](https://www.guneyss.com/en/knowledge-center/selecting-flanges-and-fittings-for-stainless-steel-piping/): On a stainless steel pipeline, fittings and flanges are selected by matching them to the pipe's DN/NPS size and Schedule wall thickness. Weld neck flanges are used on lines subject to pressure and vibration, slip-on…
- [Choosing Corrosion-Resistant Stainless Fittings for Saltwater Service](https://www.guneyss.com/en/knowledge-center/choosing-corrosion-resistant-stainless-fittings-for-saltwater-service/): In saltwater environments, the baseline material is AISI 316L; its molybdenum content increases resistance to chloride-induced pitting and crevice corrosion. The details determine a fitting's service life as much as the…
- [Hydraulic Hose Selection, Sizing and Installation](https://www.guneyss.com/en/knowledge-center/hydraulic-hose-selection-sizing-and-installation/): The right hose assembly is defined by seven pieces of information: inside diameter and length, temperature, application conditions, fluid, working and surge pressure, the connection type at both ends, and delivery…
- [Hydraulic Fitting Sealing: Methods and Installation Mistakes](https://www.guneyss.com/en/knowledge-center/hydraulic-fitting-sealing-methods-and-installation-mistakes/): Hydraulic connections are sealed in four ways: O-ring, bonded seal (Dowty washer), metal cone face and tapered thread. On parallel threads, the seal is made by a seal or a cone; tapered threads such as BSPT and NPT…
- [SAE Flange Code 61 vs Code 62 (SAE 3000 / 6000): Selection and Installation](https://www.guneyss.com/en/knowledge-center/sae-flange-code-61-vs-code-62-sae-3000-6000-selection-and-installation/): Code 61 (ISO 6162-1) and Code 62 (ISO 6162-2) flanges are not interchangeable, even at the same nominal size: the Code 62 flange head is thicker and wider, and its bolt spacing is larger. "3000 PSI" and "6000 PSI" are…
- [Custom Stainless Parts Made to Drawing: The Step-by-Step Process](https://www.guneyss.com/en/knowledge-center/custom-stainless-parts-made-to-drawing-the-step-by-step-process/): When a standard part won't fit, custom manufacturing starts with a sample, a dimensioned technical drawing or dimensional data. The thread standard, sealing type and critical dimensions are confirmed in writing before…
- [BSP, NPT, UNF/JIC and Metric Threads: How to Identify and Match Them](https://www.guneyss.com/en/knowledge-center/bsp-npt-unf-jic-and-metric-threads-how-to-identify-and-match-them/): BSP threads have a 55° profile, while NPT, UNF and metric threads have a 60° profile. BSPT and NPT tapered threads seal on the thread itself; on BSPP, UNF and metric parallel threads, sealing is provided by a seal, an…
- [AISI 316 vs 316L: Differences and the Right Choice for Hydraulic Fittings](https://www.guneyss.com/en/knowledge-center/aisi-316-vs-316l-differences-and-the-right-choice-for-hydraulic-fittings/): The only difference between 316 and 316L is the carbon limit: max. 0.08% for 316 and max. 0.03% for 316L. Because low carbon reduces the risk of intergranular corrosion after welding, 316L is the choice for welded…

## Technical charts

- [Technical Charts](https://www.guneyss.com/en/technical-charts/): BSP, NPT, JIC/UNF, ORFS and metric 24° (DIN 2353) thread and fitting dimensions, SAE flange and hydraulic hose charts, plus a thread identification tool. Values are based on ISO, SAE and ASME standards, to help you…
  - [Hydraulic Thread Identification Tool](https://www.guneyss.com/en/technical-charts/hydraulic-thread-identification-tool/): Enter the diameter and thread pitch you measured with a caliper; the tool lists the closest candidates among BSP, NPT, UN/UNF and metric fine threads and shows how to tell commonly confused threads apart.
  - [BSP Thread Size Chart](https://www.guneyss.com/en/technical-charts/bsp-thread-size-chart/): Major diameter, minor diameter, pitch and threads per inch of BSPP (G, ISO 228-1) and BSPT (R, Rc, Rp; ISO 7-1) threads from 1/8" to 2"; the difference between parallel and tapered BSP, and approximate tap drill sizes.
  - [NPT Thread Size Chart](https://www.guneyss.com/en/technical-charts/npt-thread-size-chart/): Threads per inch, pitch, pipe OD, DN equivalent and approximate tap drill sizes for ASME B1.20.1 NPT and ASME B1.20.3 NPTF tapered pipe threads from 1/8" to 2".
  - [JIC and UNF Thread Size Chart](https://www.guneyss.com/en/technical-charts/jic-and-unf-thread-size-chart/): Dash sizes -2 to -32 for JIC 37° (SAE J514) and SAE O-ring boss (SAE J1926) connections: tube OD, UN/UNF thread, pitch and the typical reading ranges to expect with a caliper.
  - [Metric 24° Fitting Dimensions (DIN 2353)](https://www.guneyss.com/en/technical-charts/metric-24-fitting-dimensions-din-2353/): LL, L and S series of DIN 2353 / ISO 8434-1 24° cone fittings with cutting rings: tube OD, nut thread, pitch, ISO working pressure and the matching ISO 6149 stud end thread.
  - [SAE Flange Dimensions (Code 61 and 62)](https://www.guneyss.com/en/technical-charts/sae-flange-dimensions-code-61-and-62/): Bolt spacing, UNC bolts, O-ring sizes and working pressures of SAE J518 / ISO 6162 four-bolt flanges in Code 61 (SAE 3000) and Code 62 (SAE 6000), from 1/2" to 3".
  - [ORFS Fitting Size Chart](https://www.guneyss.com/en/technical-charts/orfs-fitting-size-chart/): Dash sizes -4 to -24 for ORFS (O-ring face seal, SAE J1453 / ISO 8434-3) connections: tube OD, UN/UNF thread, typical reading range and face O-ring numbers.
  - [Hydraulic Hose Dash Size Chart](https://www.guneyss.com/en/technical-charts/hydraulic-hose-dash-size-chart/): Hydraulic hose dash sizes from -3 to -32, nominal inside diameter (inches and mm) and catalog DN equivalent; how hose size is measured and how it differs from tube dash sizes.
  - [Glossary of Hydraulic Terms](https://www.guneyss.com/en/technical-charts/glossary-of-hydraulic-terms/): Short definitions of hydraulic fitting, thread, flange, hose and stainless steel material terms: BSP, NPT, JIC, ORFS, DIN 2353, dash size, bonded seal, 316L and more.

## Company

- [About us](https://www.guneyss.com/en/about-us/): Since 2020, GÜNEYSS has been manufacturing stainless steel fittings, hose assemblies, SAE flanges, valves, and custom-made components in Türkiye, managing the entire process from selecting the right connection to final…
- [Production and quality](https://www.guneyss.com/en/production-quality/): A defined, controlled production workflow in which every step is clear: from AISI 316/316L raw material receiving to CNC machining, and from burr and surface inspection to packaging with protective caps.
- [Contact](https://www.guneyss.com/en/contact/): Phone, WhatsApp, email and address.
- [Request a quote](https://www.guneyss.com/en/request-quote/): Quote request form by product, service or sector.

## Language versions

- [Türkçe (tr)](https://www.guneyss.com/)
- [English (en)](https://www.guneyss.com/en/)
- [Русский (ru)](https://www.guneyss.com/ru/)
- [Azərbaycanca (az)](https://www.guneyss.com/az/)
- [Nederlands (nl)](https://www.guneyss.com/nl/)
- [Gaeilge (ga)](https://www.guneyss.com/ga/)
- [中文 (zh-Hans)](https://www.guneyss.com/zh/)
- [हिन्दी (hi)](https://www.guneyss.com/hi/)
- [Filipino (tl)](https://www.guneyss.com/fil/)
- [Ελληνικά (el)](https://www.guneyss.com/el/)
- [Български (bg)](https://www.guneyss.com/bg/)
- English summary: https://www.guneyss.com/en/llms.txt

## Optional

- [Sitemap (XML, all languages)](https://www.guneyss.com/sitemap.xml)
- [Privacy notice (KVKK)](https://www.guneyss.com/en/privacy-notice/)