JIC Male Push-On Fitting: 16711-PO Series

Why This JIC Male Push-On Fitting Passes the Compliance Gate

A JIC male push-on fitting joins a JIC 37° flare port to a low-pressure hose line without a crimping machine. The 16711-PO series from HENGHUA is a one-piece barbed fitting: the JIC end carries a male UNF thread with a 74° included external cone per SAE J514 (ISO 8434-2), and the hose end is a barbed tail that pushes into the hose and is secured with a hose clamp. The series covers 10 sizes from -04 to -12 with UNF threads from 7/16″-20 to 1-1/16″-12. Every unit is cold-forged from carbon steel, heat-treated, plated, and 100% pressure tested before shipment. For maintenance teams this is the fitting that repairs a JIC low-pressure line on site in minutes, with hand tools only.

• SAE J514 (ISO 8434-2) JIC male end: UNF thread with a 74° included external cone (37° flare), sealing metal-to-metal into a female cone seat or swivel nut, with no O-ring and no thread sealant required.
• Barbed push-on hose end: the barbed tail grips the hose bore, and a hose clamp locks the joint, so no crimper, no ferrule, and no crimp data sheet are needed.
• OEM gate check: full dimensional and material conformance per SAE J514, with material test reports (MTR) available for every batch.

Core Advantages

1. Tool-free hose assembly: cut, push, clamp, and the line is ready, which makes field repairs and prototype work fast.
2. JIC 74° cone end: connects to any standard JIC female flare seat or swivel nut in the circuit, per SAE J514.
3. -40°C to +120°C operating range: suited to return, drain, and cooler circuits across mobile and industrial equipment.
4. 96 to 1000 h salt spray options: trivalent zinc (96 h), zinc-nickel (720 h), or Dacromet (1000 h), matched to your environment.

A Note on Pressure Class

The 16711-PO series is engineered for low-pressure circuits, not for high-pressure working lines. The barbed hose joint is the rating limit: with a correctly selected hose and clamp, typical working pressure is about 1.0-3.5 MPa (150-500 psi) depending on hose construction and size. Return lines, drain lines, oil cooler circuits, air lines, and fuel lines are the intended duty. For high-pressure JIC working lines, use the crimp version of the 16711 series, which is rated to the full SAE J514 class. We state this limit plainly so your assembly is never pushed past its safe duty.

Technical Specifications

What Is a JIC Male Push-On Fitting?

A JIC male push-on fitting has two ends with two different jobs. The port end is a standard JIC male termination: a UNF thread with an external 74° cone. The 74° figure is the included angle of the cone, with each flank 37° from the axis, which is why JIC fittings are also called JIC 37 degree flare fittings. When the male cone is tightened into a female JIC 74° cone seat or swivel nut, the two cone faces contact metal-to-metal and the joint seals without O-rings, washers, or sealant.

The hose end is the push-on part: a barbed tail that is pushed into the hose bore. The barbs grip the inner cover of the hose, and a hose clamp over the outer cover locks the joint. Because there is no ferrule and no crimp, the assembly needs no crimping machine and no crimp data sheet, which is the whole point of the PO series. It is the practical choice for return, drain, and cooler lines on mobile equipment, for air and fuel lines on machines, and for any low-pressure JIC circuit where a field repair must be finished in minutes.

Dimensional Data and Threads

Full dimension drawings with A, C, and S1 callouts are supplied as PDF and CAD (STEP/DWG) files.

Full Dimension Table (Part Number Matrix) {#by-thread-size}

Read the table with your JIC thread (E) and your hose size (dash). The part number is the order code; copy it directly into your inquiry or purchase order. The pattern is 16711-[thread dash]-[hose dash]PO: for example, 16711-06-06PO has a 9/16″-18 thread and suits a -06 (10 mm) push-on hose.

The series covers the push-on segment of the JIC male range. Confirm your hose construction and clamp selection with our engineers before ordering, and the recommended clamp width and torque will be supplied with the order.

Material and Heat Treatment

Cold forging preserves the grain flow of the steel, which raises fatigue resistance under pressure pulsation. Each heat-treatment batch is hardness-tested and recorded, so the hardness number on the MTR matches the parts you receive.

Working Pressure

For high-pressure circuits, select the crimp version of the 16711 series instead. The exact rating for your hose and clamp combination is confirmed by our engineers before shipment.

Pressure-Temperature Operating Envelope

The steel fitting body is not the limiting component in this design; the hose, the clamp, and the hose cover material govern the operating window. Use the hose manufacturer’s derating curve for the system.

Selection and Ordering

The 16711-PO series covers the push-on segment of JIC hydraulic hose fittings, from -04 to -12, and most orders can be placed directly from the tables below.

How to Read the Part Number Matrix

Find your JIC thread in the E column, then the hose dash size you use. The intersecting row gives the order code, for example a 9/16″-18 thread with a -06 hose gives 16711-06-06PO. If your combination is not listed, send us both sizes; a custom JIC male push-on fitting is machined on request.

JIC Thread Size Chart

Use this chart to identify any JIC fitting by its thread and to confirm the matching hose dash sizes. It is the same mapping used in the matrix above.

Cross Reference Service

Most maintenance teams buy against a legacy part number printed on the old drawing. Send us the OEM or distributor part number you currently use, with a photo of the fitting if possible. Our engineers identify the thread, cone angle, hose size, and barb configuration, then confirm the exact 16711-PO equivalent before you place the order. The service covers JIC 37 degree flare fittings, JIC hydraulic hose fittings, and push-on hose fittings in your inventory, and interchange confirmation is free. The cross reference sheet is returned in PDF for your records.

Packaging and Logistics

Assembly and Use Guide

Four-Step Push-On Procedure

1. Cut the hose square: use a hose cutter or a sharp knife; a square, clean end lets the barbs seat evenly around the bore.
2. Lubricate lightly: apply a thin film of assembly lubricant to the barbs and the hose bore, so the fitting slides in without tearing the inner cover.
3. Push on to the shoulder: push the fitting into the hose until the hose end meets the hex shoulder; the barbs must be fully covered by the hose.
4. Clamp and verify: fit the hose clamp over the hose at the first barb groove and tighten to the recommended torque, then pull on the hose to confirm the joint holds.

Connecting the JIC Male End

Clean the 74° external cone and the mating female cone seat or swivel nut with a lint-free cloth. Thread the male end into the female seat by hand until the cone faces touch, then tighten the nut or stud to the torque listed for the thread size. JIC 37 degree flare fittings seal by cone contact alone, which is why the cone face must stay clean and dry. Do not apply sealant to the cone face.

Installation Warnings

• ❌ Never use this push-on fitting on high-pressure working lines. The barbed joint is rated for low-pressure duty only, typically up to about 3.5 MPa depending on the hose and clamp.
• ❌ Never assemble without a hose clamp. The barbs alone are not a rated seal; the clamp is part of the joint.
• ❌ Never use the fitting on hose that is not suited to barbed push-on assembly; confirm the hose construction with our engineers.
• ❌ Never reuse a fitting pulled out of a hose, and never assemble over a damaged or cut hose end.
• ❌ Never apply sealant to the 74° cone face. It hardens, blocks metal-to-metal contact, and contaminates the circuit.
• ✔ After assembly, pressure-test the circuit and inspect the clamp seating for weepage.

OEM Customization and Quality Traceability

Customization Options

• Size and thread customization: non-standard thread and hose combinations, custom barb counts, and special stem lengths machined to your drawing.
• Surface treatment customization: trivalent zinc (96 h), zinc-nickel (720 h), or Dacromet (1000 h) salt spray grades, selected by your environment and corrosion specification.
• Laser marking: your logo, part number, and batch code laser-marked on the hex for full field traceability.
• Material options: 304/316L stainless for chemical, marine, and food-contact circuits, with passivation certificates.

Quality and Traceability System

Every batch follows a documented flow: incoming steel with mill certificate → cold forging → CNC machining → heat treatment → plating → 100% thread gauge and dimension inspection → pressure test → laser marking → packing. The batch number on the carton links back to the raw material lot, the heat-treatment record, and the inspection report. Material test reports (MTR) are provided with every order on request, and third-party inspection reports (BV/SGS) can be arranged before shipment.

FAQ

Q: What is a JIC male push-on fitting? A: It is a one-piece barbed fitting with a JIC male 74° cone end per SAE J514 on the port side and a barbed tail that pushes into a low-pressure hose on the hose side, secured with a hose clamp. No crimping machine is needed.

Q: What does PO mean in the part number? A: PO designates the push-on (barbed) version of the series, as opposed to the crimp version. The hose end uses barbs and a clamp instead of a ferrule and a crimp.

Q: What pressure is this fitting rated for? A: The JIC flare end itself conforms to SAE J514, but the assembled barbed line is a low-pressure design, typically rated about 1.0-3.5 MPa (150-500 psi) depending on hose construction, size, and clamp. It is intended for return, drain, cooler, air, and fuel circuits, not high-pressure working lines.

Q: What is the 74° cone? A: The 74° figure is the included angle of the external cone, with each flank 37° from the axis, the same geometry as a female JIC 74° cone seat or swivel nut. The cone faces seal metal-to-metal, so no O-ring or sealant is used.

Q: What hose sizes does the 16711-PO series cover? A: The series covers hose from -04 to -12 (DN 6 to 20). Confirm your hose construction and clamp selection with our engineers, and the recommended clamp will be supplied with the order.

Q: Can I use this fitting without a clamp? A: No. The clamp is part of the rated joint. Assemble the barbs fully into the hose, then fit the clamp over the hose at the barb groove and tighten to the recommended torque.

Solicitar um orçamento

Tell us the JIC thread, the hose dash size, the hose construction, and the annual quantity. Whether you need stock JIC hydraulic hose fittings for distribution or a custom JIC male push-on fitting for an OEM program, the quoting process is the same. For replacement orders, send the legacy part number and a photo, and our engineers will confirm the interchange before quoting. Every fitting leaves the HENGHUA factory pressure-tested, batch-coded, and backed by a written warranty. Request your quote, clamp recommendation, or drawing pack today, and we will respond within 24 hours.