26711D-RW JIC Female 74 Degree Cone Fitting

Our JIC female 74 degree cone fitting, series 26711D-RW, is a crimp-on hydraulic hose fitting built to the American JIC connection system, with a UNF female thread and a 74 degree inner cone seat (37 degree half-angle, the same sealing geometry as the JIC 37 degree flare). It connects braided hydraulic hose to JIC female ports made to SAE J514. The range covers 7/16″-20 to 1.7/16″-12 UNF threads, dash size -04 to -20, hose bore DN6 to DN32. Every fitting is 100% dimensionally inspected before shipment.

Compliance and standards:

• SAE J514 (hydraulic tube fittings, 37 degree flare / JIC system)
• ISO 8434-2 (37 degree flare connectors)
• UNF threads (Unified National Fine, inch based)
• SAE J516 (general hydraulic hose fitting design reference)

Why buyers choose this fitting:

• JIC female cone seat. The 74 degree inner cone seat receives the 74 degree outer cone (37 degree flare) of the mating male connector. Metal-to-metal cone contact carries the seal.
• Double hexagon body. An inner hex (S1) and an outer hex (S2) give you two holding points. Install in tight manifolds with one wrench on each hex.
• UNF thread range. 7/16″-20 through 1.7/16″-12, matching the SAE J514 dash grid from -04 to -20.
• Wide temperature range. Rated for -40°C to +100°C continuous duty, verified in our production line tests.

JIC Female 74 Degree Cone Fitting Technical Specifications

The table below lists all 13 sizes of the 26711D-RW JIC female 74 degree cone fitting. Dimensions are in millimeters. All threads are UNF (Unified National Fine) with a 74 degree inner cone seat per SAE J514.

*Row 26711D-20-20RW: the thread shown in the scanned source is 1.7/16″-12, which differs from the common SAE J514 -20 value of 1.5/8″-12. Confirm the thread against the original HENGHUA spec sheet before ordering.

Notes: Dim. A is the assembly reference length from the nut face to the hose-end shoulder. Dim. C is the cone zone length. Hex S1 is the inner hex across flats, Hex S2 is the outer hex across flats. The -RW suffix denotes the braided-hose version; for spiral-wound hose, use series 26712D-XX-XXRW.

How the 74 Degree Cone Seat Seals

This fitting carries a 74 degree inner cone seat at the threaded end. When the UNF female thread is tightened onto a mating JIC male connector, the male 74 degree outer cone (37 degree flare) seats into this cone and the metal-to-metal contact carries the seal. The thread itself only positions and tightens the connection.

This is the classic American sealing philosophy: a precision cone joint that tolerates repeated assembly and disassembly. There is no O-ring and no thread sealant on the cone. Keep the cone surface clean and undamaged, and the seal repeats every time. The matching male side is our 16711 series JIC male 74 degree cone fitting.

Why the Double Hexagon

The double hexagon body is the practical answer to a real workshop problem: ports in tight spaces. With an inner hex (S1) and an outer hex (S2), the installer can hold the fitting body with one wrench on the inner hex while tightening the connection with the outer hex, or vice versa. No need to grip the hose, no need to find a third hand, and no risk of crushing the barbed tail with pliers.

Insert Depth and Crimp O.D. – The Two Numbers Engineers Ask For

Insert depth is the length of the barbed tail that enters the hose bore. Crimp O.D. is the outside diameter of the ferrule after crimping. Together they decide whether the assembly holds pressure or leaks at the crimp zone.

HENGHUA publishes the matched insert depth and crimp O.D. for every hose construction we supply, including SAE 100 R1AT, R2AT and EN 853 1SN / 2SN. The values are hose-specific because reinforcement thickness changes the stack-up. Request our crimp data sheet with your hose model and we will return the exact crimp O.D. and die selection within one working day.

Our production testing found that a verified crimp O.D. within the published tolerance (typically +/- 0.2 mm) gives a burst safety margin of 4:1 or higher on the complete assembly. Measure with a digital caliper after every crimp.

Material and Heat Treatment

• Carbon steel (standard): high-strength cold-headed or hot-forged carbon steel (20# / 35# / 45# grades). The tail and cone seat are case-hardened with a carburizing and quenching process for fatigue resistance. Reference hardness range is HRC 20-28 on the core with a hardened case.
• Surface finish: white zinc or color (yellow) zinc plating with passivation. Optional zinc-nickel and Dacromet coatings are available for higher salt spray requirements.
• Stainless steel (option): 304, 316 or 316L stainless steel for corrosive media and washdown environments.

Pressure and Temperature Ratings

The connection rating follows the SAE J514 37 degree flare reference table below. These are reference values (§) for the fitting connection itself. The final working pressure of a hose assembly is set by the hose construction and the approved crimping specification.

§Reference values per SAE J514 37 degree flare connection classes. Confirm the assembly rating with the HENGHUA crimp data sheet matched to your hose.

Temperature range: -40°C to +100°C for the fitting in continuous service. At elevated temperature, apply the standard SAE J517 style derating to the assembly working pressure. Our technical data sheet includes a pressure-temperature derating chart; contact us and we will send it with your quotation.

Pressure testing: HENGHUA can supply assemblies proof-tested up to 100% of the rated working pressure, with test certificates on request.

How to Select the Right JIC Female 74 Degree Cone Fitting

Selection is a three-step process. First, match the hose bore to the dash size. Second, match the UNF thread to your port. Third, confirm the hose construction version (-RW for braided, 26712D series for spiral).

Part Number Structure

Read any HENGHUA part number in three segments. Example: 26711D-08-08RW.

Select by Hose Series

The 26711D-RW fitting is designed for braided hydraulic hose. Recommended matching constructions:

• SAE 100 R1AT (one wire braid) – for -04 to -20 sizes
• SAE 100 R2AT (two wire braid) – for -04 to -20 sizes
• EN 853 1SN and 2SN (equivalent European constructions)

Select by Thread Size

The 74 degree inner cone seat receives the mating 37 degree flare cone. All threads are UNF (Unified National Fine):

• Small sizes: 7/16″-20, 1/2″-20, 9/16″-18 (dash -04 to -06)
• Medium sizes: 3/4″-16, 7/8″-14, 1.1/16″-12 (dash -06 to -12)
• Large sizes: 1.5/16″-12, 1.7/16″-12 (dash -12 to -20)

Installation uses both hexes: hold the inner hex S1 with one wrench and tighten the outer hex S2 with the other. The cone seat provides the seal, so no additional sealing element is required on the cone.

Cross Reference

This series replaces equivalent SAE J514 JIC 37 degree flare female fittings available in the market. If you hold an OEM part number or a competitor catalog number, send it to our sales team. We confirm the direct replacement within 24 hours, including thread, dash size, hex and insert depth checks.

Packaging and Logistics

Assembly Guide: Four Steps to a Safe Hose Assembly

Follow this process for every crimped assembly. It applies to every JIC female 74 degree cone fitting size from dash -04 to -20. Skipping one step is the most common cause of early fitting failure.

Step 1 – Cut the hose square. Use a sharp hose cutter. A square cut face lets the fitting seat evenly inside the hose. A beveled or ragged cut leaves voids that become leak paths.

Step 2 – Mark the insert depth. Measure the insert depth from the HENGHUA crimp data sheet. Mark a line on the hose cover at that distance. The mark must remain visible after insertion.

Step 3 – Lubricate and insert. Apply a thin layer of compatible assembly lubricant to the hose bore and the barbed tail. Push the fitting in with a twisting motion until the depth mark aligns with the tail end. Stop at the mark. Do not force past it.

Step 4 – Crimp and verify. Select the correct die set for your hose and fitting size. Crimp in one continuous stroke. After crimping, measure the crimp O.D. with a digital caliper and compare it with the tolerance on the crimp data sheet. Record the value on your quality log. A correct crimp O.D. is the difference between a 10-year assembly and a field failure.

Safety Warnings – Read Before Crimping

• Never mix brands. Hoses and fittings from different manufacturers may share the same dimensions but use different crimp parameters. Always use a matched hose, fitting and crimp data sheet.
• Never seal the 74 degree cone with tape. The cone seat seals by metal-to-metal 37 degree flare contact. Thread sealant tape or paste on the cone surface destroys the seal geometry.
• Do not confuse JIC with SAE O-ring boss (ORB). JIC seals at the 37 degree flare cone. ORB seals with an O-ring at the thread root. Never substitute one for the other.
• Use both hexes when installing. Hold the inner hex S1 with a backup wrench while tightening the outer hex S2. This protects the barbed tail from twisting stress.
• Tighten to spec. Tighten to the torque value on the data sheet. Over-tightening distorts the cone seat. Under-tightening causes vibration loosening.
• Never reuse a crimped fitting. Once crimped, the ferrule zone is work-hardened. A re-crimp cannot restore the original grip.

OEM Customization and Quality Traceability

HENGHUA supplies not only standard sizes but also fully customized JIC female 74 degree cone fitting solutions for OEM programs.

Customization Services

• Thread customization. Non-standard thread lengths, special threads, and custom tail lengths for your hose construction.
• Surface treatment customization. White zinc, color zinc, zinc-nickel and Dacromet coatings, matched to your salt spray requirement from 72 hours up to 720+ hours.
• Laser marking. Your logo, part number and batch code laser-marked on the hex for full traceability.
• Packaging customization. Private-label boxes, barcode labels and mixed-size kits per your BOM.

Quality Traceability

Every HENGHUA batch carries a traceable batch number. The traceability chain covers incoming material certificates, heat treatment records, dimensional inspection reports and final packing lists. Material test reports (MTR) and third-party inspection (BV, SGS or equivalent) can be arranged before shipment. Request our sample batch and audit our quality documentation – we are confident in what it shows.

Frequently Asked Questions

What is a JIC female 74 degree cone fitting?

It is a hydraulic fitting with a UNF female thread and a 74 degree inner cone seat (37 degree half-angle). The seat receives the mating male 37 degree flare cone and seals by metal-to-metal contact. The system follows SAE J514 and ISO 8434-2.

Is JIC the same as 37 degree flare?

Yes. JIC is the common name, SAE J514 is the standard number, and 37 degree flare describes the sealing angle. The 74 degree cone is that same geometry measured as the included angle.

What is the double hexagon for?

The double hexagon gives two wrenching points. You hold the inner hex with one wrench and tighten the outer hex with the other, which is essential in tight manifolds and when the hose tail must not twist.

What is the difference between JIC and SAE O-ring boss (ORB)?

JIC seals at the 37 degree flare cone. ORB seals with an O-ring at the thread root. The two are not interchangeable, even on similar dash sizes.

Which hose works with the 26711D-RW fitting?

The 26711D-RW version is designed for braided hydraulic hose such as SAE 100 R1AT, R2AT and EN 853 1SN / 2SN. For spiral-wound hose, use the 26712D series.

What is the minimum order quantity?

Stock sizes start from 100 pcs. Customized versions start from 500 pcs per size. OEM annual contracts can be discussed directly with our factory team.

Get a Quote for Your JIC Female 74 Degree Cone Fitting

Tell us your hose model, thread size and annual volume. We reply with a formal quotation, the matching crimp data sheet and our lead time within one working day. For urgent projects, our engineers support you online with crimp parameter verification.