10511-RW Metric Male 24 Degree Cone Seat Heavy Series Fitting

Our metric male 24 degree cone seat heavy series fitting, series 10511-RW, is the heavy-duty (H.T.) version of our light series range. It is a crimp-on hydraulic hose fitting built to the DIN 2353 heavy series dimensional standard and the ISO 8434-1 / DIN 3865 24 degree cone geometry, sized and heat-treated for higher pressure service. The range covers M14x1.5 to M52x2 threads, dash size -04 to -20, hose bore DN6 to DN32. Every fitting is 100% dimensionally inspected before shipment.

Compliance and standards:

• DIN 2353 heavy series (H.T.) dimensional standard
• ISO 8434-1 (24 degree cone connector geometry)
• DIN 3865 (metric 24 degree cone stud ends)
• ISO 12151 series (hose fittings with 24 degree cone connectors)
• SAE J516 (general hydraulic hose fitting design reference)

Why buyers choose this fitting:

• Heavy series rating. The H.T. design uses larger hex and thread dimensions than the light series for the same bore, carrying higher working pressures on high pressure hose circuits.
• Matched to 2SN and 4SP hose. The heavy series profile is the standard partner for SAE 100 R2AT, EN 853 2SN and spiral-wound high pressure hose constructions.
• Wide temperature range. Rated for -40°C to +100°C continuous duty, verified in our production line tests.
• Carbon steel or stainless options. Zinc-plated carbon steel for general duty; 304, 316 or 316L stainless for corrosive media.

Metric Male 24 Degree Cone Seat Heavy Series Fitting Technical Specifications

The table below lists all 16 sizes of the 10511-RW metric male 24 degree cone seat heavy series fitting. Dimensions are in millimeters. All threads are metric fine (ISO 725 based) with a 24 degree inner cone seat per DIN 3865.

*Row 10511-36-16RW: the S2 value (38 mm) is smaller than the 36-12RW value (41 mm) in the scanned source. Confirm this hex size against the original HENGHUA spec sheet before large orders.

Notes: Dim. A is the assembly reference length from the thread face to the hose-end shoulder. Dim. C is the thread zone length. Hex S2 is the wrench size across flats. The -RW suffix denotes the braided-hose version; for spiral-wound hose, use series 10512-XX-XXRW. The 10511 series is the heavy series (H.T.) counterpart of the 10411 light series.

Heavy Series vs Light Series – What Is the Difference

The DIN 2353 standard defines two dimensional series for the same 24 degree cone connection: light (L.T.) and heavy (S.T., also written H.T.). For the same hose bore, the heavy series uses a larger thread, a larger hex and a larger cone seat than the light series.

This trade-off has a clear logic. The heavy series carries higher connection pressure ratings, which is why it is the standard choice for high pressure braided hose (SAE 100 R2AT, EN 853 2SN) and for spiral-wound hose assemblies. The light series is preferred where compactness and lower cost matter more than the pressure ceiling. If your circuit runs above the light series rating, this metric male 24 degree cone seat heavy series fitting is the correct choice.

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. They are the two most important process control values for a leak-free assembly.

HENGHUA publishes the matched insert depth and crimp O.D. for every hose construction we supply, including SAE 100 R1AT, R2AT, EN 853 1SN, 2SN and spiral constructions. 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 DIN 2353 heavy series 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 DIN 2353 heavy series (H.T.), higher than the light series ratings for the same bore. 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 Metric Male 24 Degree Cone Seat Heavy Series Fitting

Selection is a three-step process. First, confirm your circuit pressure exceeds the light series rating. Second, match the hose bore to the dash size. Third, match the thread to your port.

Part Number Structure

Read any HENGHUA part number in three segments. Example: 10511-22-08RW.

Select by Hose Series

The 10511-RW fitting is designed for high pressure braided hydraulic hose. Recommended matching constructions:

• SAE 100 R2AT (two wire braid) – for -04 to -20 sizes
• EN 853 2SN (equivalent European construction)
• SAE 100 R1AT and EN 853 1SN (one wire braid) – where the circuit permits
• Spiral constructions (EN 856 4SP / 4SH) – use the 10512 series version

Select by Thread Size

The 24 degree cone seat accepts the 24 degree outer cone of the mating connector. All threads are metric fine:

• Small sizes: M14x1.5, M16x1.5, M18x1.5, M20x1.5 (dash -04 to -06)
• Medium sizes: M22x1.5, M24x1.5, M30x2 (dash -05 to -12)
• Large sizes: M36x2, M42x2, M52x2 (dash -12 to -20)

Tightening is via the hex S2 with a standard wrench. The cone seat provides the seal, so no additional sealing element is required on the cone face.

Cross Reference

This series replaces equivalent DIN 2353 heavy series metric male 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 metric male 24 degree cone seat heavy series 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 24 degree cone with tape. The cone seat seals by metal-to-metal 24 degree cone contact. Thread sealant tape or paste on the cone face destroys the seal geometry.
• Do not substitute light series parts. A light series fitting on a heavy series circuit is an overpressure hazard. Check the series code on the part before assembly.
• Tapered threads need sealant. When this fitting is adapted to a tapered thread port (NPT or BSPT), the adapter requires thread sealant. Parallel thread connections with O-ring seals must never receive tape.
• Tighten to spec. Use the hex S2 and 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 metric male 24 degree cone seat heavy series 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 metric male 24 degree cone seat heavy series fitting?

It is a heavy-duty hydraulic fitting whose male thread carries a 24 degree inner cone seat. The seat receives the 24 degree outer cone of the mating connector and seals by metal-to-metal cone contact. The heavy series (H.T.) follows the DIN 2353 dimensional standard for higher pressure service.

What is the difference between heavy series and light series?

For the same hose bore, the heavy series uses larger thread, hex and cone seat dimensions, which carry higher connection pressure ratings. The light series is more compact and lower cost. This page covers the heavy series (H.T.).

Which hose works with the 10511-RW fitting?

The 10511-RW version is designed for high pressure braided hydraulic hose such as SAE 100 R2AT and EN 853 2SN. For spiral-wound hose, use the 10512 series.

Can I order stainless steel versions?

Yes. 304, 316 and 316L stainless steel versions are available for the full size range, with the same dimensions and crimp behavior.

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.

How do I verify a correct crimp?

Measure the crimp O.D. with a digital caliper after crimping. Compare it with the value on the HENGHUA crimp data sheet for your hose. The typical tolerance is +/- 0.2 mm.

Get a Quote for Your Metric Male 24 Degree Cone Seat Heavy Series 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.