10711 GB Metric Male 74-Degree Cone Hydraulic Hose Fittings

Metric 74-degree cone hydraulic hose fittings seal through a 74-degree external cone (37 degrees per side) machined on the male stud – the national-standard cone geometry referenced to GB/T 5628, built here with metric threads for hose assembly. The 10711 series covers 20 part numbers from DN4 (-02) to DN32 (-20), male metric threads M10x1 to M45x2, designed for wire-braided hose. If you build or service Chinese-specified agricultural and construction machinery – where the 74-degree cone seat is a common port standard – this page is your reference for dimensions, thread-pitch variants, part numbers and OEM options.

Why Choose These 74-Degree Cone Fittings

• The GB-standard cone geometry. 74-degree external cone per the national-standard series (REF. GB/T 5628), the cone family widely used on Chinese agricultural and construction machinery ports.
• Wide size coverage, small to medium bores. 20 part numbers from DN4 (-02) up to DN32 (-20), including the smaller bores (DN4-DN8) the metric cone families often start above.
• Thread-pitch variants in one series. The C and E suffixes cover alternate pitches (for example M12x1.25 or M30x2) without leaving the series.
• Metal-to-metal cone seal. No O-ring, no bonded seal, no thread tape – a clean machined cone joint for hydraulic oils.
• OEM-ready. Laser marking, custom plating, material test reports and batch traceability.

Standards and traceability. Threads are ISO 724 metric threads. The sealing cone follows the 74-degree national-standard geometry referenced as GB/T 5628 in the source catalog series – the metric-thread cousin of the 74-degree cone family known internationally through JIC (which uses inch threads). Fittings are designed to pair with wire-braided hose built to EN 853 1SN/2SN or SAE 100 R1AT/R2AT performance classes. Dimensional inspection reports and material test certificates are available for OEM gate checks.

74-Degree Cone vs 60-Degree vs 24-Degree: Which Port Is Yours?

The fastest way to mis-order a metric fitting is to ignore the cone angle. The same metric thread size can appear in different cone systems, and the cone is what seals – so the angle must match the port.

Two rules of thumb:

1. Same angle, different threads is still a mismatch. The metric 74-degree cone (this page) and the JIC 74-degree flare share the cone angle but use different thread systems – a metric-thread port needs the metric 74-degree fitting, not the JIC one.
2. Same thread, different angle is the classic error. A port with a 60-degree or 24-degree cone seat will not seal against a 74-degree cone even if the thread screws on – the metal cones meet at the wrong angle and leak.

If you are not sure which cone angle your port uses, send us a photo of the port and the old fitting and we will identify it – the cone angle, thread and pitch – and confirm the matching 10711 part number.

What do the C and E suffixes mean?

The table lists the standard pitch for each thread size, with two variants marked by suffix:

• C = alternate pitch for the same nominal thread, for example 10711-12-03C uses M12x1.25 where the standard row 10711-12-03 uses M12x1.5.
• E = alternate pitch, for example 10711-30-12E uses M30x2 where the standard row 10711-30-12 uses M30x1.5.

Order the exact pitch your port uses – when in doubt, measure the thread pitch with a pitch gauge or send a photo of the port thread.

10711 Series Technical Specifications

Materials and processing

• Body material options: high-strength carbon steel (20#/35#/45# grades, cold-formed or machined) as standard; stainless steel 304 or 316L available for corrosive or wash-down environments.
• Surface treatment: zinc plating as standard; yellow, white or black zinc, zinc-nickel and Dacromet coating available for higher salt-spray requirements.
• Heat treatment: hardness and case depth are controlled per drawing to keep the thread and the 74-degree cone fatigue-resistant; typical surface hardness range HRC 20-28 (confirm the exact code on your drawing or PO).
• Sealing face: the 74-degree cone is machined, not forged as-cast, so the cone surface stays clean and concentric for a metal-to-metal seal.

Full dimension and part number table

All linear dimensions are in millimeters. E = thread, DN = hose bore, A and C = lengths per the supplier drawing, S1 = hex across flats. Rows marked C or E use the alternate pitch shown in the thread column.

Full dimensioned CAD drawings are available on request so your engineers can verify every length and the 74-degree cone before you commit a batch.

Working pressure: the honest answer engineers need

A crimp hose assembly fails at its weakest link, so the rating of a 10711 fitting depends on the hose you pair it with and the crimp quality. Wire-braided hydraulic hose in this size range typically operates between roughly 80 and 400 bar depending on bore size and construction (1SN or 2SN). Send us your hose specification and we will confirm the working pressure, burst margin and the recommended ferrule for your exact hose brand – the check is free and takes one message. For derating at elevated temperature, follow the hose manufacturer’s pressure-temperature curve, because the rubber cover and tube lose capacity above about +100°C.

Which Fitting Series Do You Need: 10711 (Braided) or 10712 (Spiral)?

The part number changes with the hose construction, because the barb geometry and the crimp parameters are different. For spiral-reinforced hose (4SP/4SH style), order the 10712 series as 10712-XX-XX. Check the hose label before ordering: braided hose is marked 1SN, 2SN or R1AT, R2AT; spiral hose is marked 4SP, 4SH or similar.

Part Number Decoder and How to Order

The 10711 part number carries the specification – thread, pitch, bore – so purchasing can copy it straight into a PO:

10711 – 30 – 12E

• 10711 = GB-series 74-degree cone male for braided hose
• 30 = thread nominal size (here M30, with the E suffix fixing the pitch at M30x2)
• 12 = hose dash size (here DN20, 3/4-inch class bore)
• No suffix = standard pitch for the row (here M30x1.5)

Because one thread size can serve several hose bores and two pitches, always quote the full part number including any C or E suffix. If you are replacing an existing fitting, send us a photo of the cone end, the thread and the hose side, and we will confirm the matching part number – including the correct cone angle and pitch – the same day.

Assembly Guide: Four Steps to a Reliable Crimp

These fittings are crimp-style hose ends with a machined 74-degree cone on the port end. Follow the four steps below on every assembly.

Step 1 – Cut the hose square. Use a sharp hose cutter or cutoff saw. A square, clean cut lets the ferrule grip the cover evenly. A beveled or ragged cut is the most common cause of pull-out failures.

Step 2 – Prepare the insert depth. Push the fitting tail into the hose until it bottoms firmly against the internal shoulder. The hose end must sit at the full insertion depth, not short, or the crimp zone will be wrong.

Step 3 – Lubricate and insert. Apply a thin film of assembly lubricant to the hose bore and the barb. Push the fitting in with a steady twisting motion until it bottoms out, then wipe away excess lubricant. Keep the 74-degree cone clean and free of nicks.

Step 4 – Crimp and verify. Crimp the matched ferrule with the hose manufacturer’s crimp specification. After crimping, always measure the crimp outside diameter with a caliper and compare it with the crimp table. If it is out of tolerance, do not put the assembly into service – cut it off and re-crimp with a corrected setting.

Warnings: three mistakes that cause leaks and blow-outs

• Never assume the cone angle. Confirm 74-degree before ordering; a 60-degree or 24-degree port will not seal against a 74-degree cone even if the thread fits.
• Never use a JIC 74-degree fitting on a metric-thread port. The cone angle matches but the thread system does not – metric threads need the metric 10711 series.
• Never put PTFE tape or sealant on the cone or the thread of a metal-cone joint – the machined cone does the sealing, and tape contamination can score the seat.

Typical Applications

The GB 74-degree cone series is widely used on Chinese-specified agricultural and construction machinery and their service networks, plus general industrial hydraulics where the 74-degree cone seat is specified:

• Agricultural machinery and implements
• Construction and earthmoving equipment
• Material handling and lift equipment
• General industrial hydraulic circuits with 74-degree cone ports
• Replacement service for machines with unreadable or obsolete part numbers

Wherever the port carries a 74-degree internal cone seat with metric threads, the 10711 series is the male hose end to connect to it.

OEM Customization and Quality Traceability

For equipment builders and large maintenance programs, the 10711 series can be adapted to your exact drawing and your traceability rules.

Customization options

• Thread and geometry: special threads, modified lengths and non-standard configurations machined to your drawing or to a sample.
• Surface treatment: zinc-nickel, Dacromet or other coatings for higher salt-spray grades; we confirm the achieved test hours for the coating you choose instead of quoting a generic number.
• Laser marking: your logo, part number and batch or date code laser-marked on the hex for full field traceability.
• Material: stainless steel 304/316L versions for corrosive media or wash-down duty.
• Packaging and kitting: custom labels, barcodes, poly-bag or box quantities, and complete hose assembly kitting.

Quality documentation

• Batch number traceability: every order carries a batch code that links back to the production records.
• Material test reports (MTR) available for carbon steel and stainless batches.
• Dimensional inspection reports for OEM gate checks.
• Third-party inspection (BV, SGS or similar) can be arranged before shipment.

Samples and MOQ. Samples for stock sizes ship fast, and we keep low MOQs for standard part numbers so distributors can test the series without tying up capital. OEM programs can move to scheduled deliveries once the drawing is approved.

Packaging and Logistics

Standard export packing: fittings are individually poly-bagged or boxed to protect threads and 74-degree cones, then packed in export cartons labeled with part number, quantity and batch code. Custom labeling, kitting and barcode requirements are available. Exact carton quantity, gross weight and CBM are confirmed on the packing list for every order.

FAQ

Q: What is a metric 74-degree cone hydraulic hose fitting? A: It is a crimp-style male hose end whose stud carries a 74-degree external cone (37 degrees per side) – the national-standard cone geometry referenced to GB/T 5628 – sealing metal-to-metal into a matching 74-degree cone seat with metric threads.

Q: What is the difference between the metric 74-degree cone and JIC 74-degree flare? A: The cone angle is the same but the thread system differs: this series uses metric threads (GB series), while JIC uses inch UN threads. A metric-thread port needs the metric fitting.

Q: What is the difference between the 74, 60 and 24-degree cones? A: The cone angles are different (74/60/24 degrees included), so the sealing surfaces do not match. Always match the cone angle of the fitting to the cone seat of the port.

Q: What do the C and E suffixes mean? A: They mark alternate thread pitches: for example 10711-12-03C uses M12x1.25 instead of M12x1.5, and 10711-30-12E uses M30x2 instead of M30x1.5. Order the pitch your port uses.

Q: Do I need thread tape or sealant? A: No. The machined 74-degree metal cone does the sealing. Tape or sealant on a metal-cone joint adds nothing and can score the seat.

Q: What is the difference between 10711 and 10712 series? A: 10711 is for wire-braided hose (1SN/2SN or R1AT/R2AT) and 10712 is for spiral hose (4SP/4SH style).

Q: What is the working pressure of these fittings? A: The assembly rating depends on the hose, the ferrule and the crimp quality. Send your hose specification and we will confirm the working pressure and the recommended ferrule for your combination.

Q: Can you make custom part numbers with my logo? A: Yes. We offer laser marking, custom plating, stainless versions and special dimensions, with MTR and batch traceability for OEM programs.

Order Today: 74-Degree Cone Male Fittings with Confirmed Fit

Every 10711 metric 74-degree cone hydraulic hose fitting in this range is machined to controlled dimensions, inspected before packing and backed by batch traceability. Send us your port photo or drawing, hose type and thread size, and you will get a confirmed part number – including the correct cone angle and pitch – a delivery date and a quote within one working day. Request samples first and torque one onto your own port: the machined cone seats cleanly and the metal-to-metal seal holds. We make sure the fitting, ferrule and hose work as one leak-free assembly.