10811L Metric Male 90-Degree Cone Hydraulic Hose Fittings

Metric 90-degree cone hydraulic hose fittings seal metal-to-metal on a cone with a 90-degree included angle, a compact light-series design for small-bore braided hose circuits. The 10811L series covers 9 part numbers from DN6 (-04) to DN12 (-08), with metric threads from M12x1.25 to M22x1.5, and an optional lock nut version (-LN) for joints that must stay tight under vibration. If you build or maintain machines with metric 90-degree cone ports, this page gives you the full reference: dimensions, part numbers, seal rules and OEM options.

Why Choose These 90-Degree Cone Hose Fittings

• Metal-to-metal 90-degree cone seal. The cone seats directly in the matching port seat, so there is no O-ring to age, no tape to apply and nothing to lose during assembly.
• Light-series compact sizing. The 10811L designation marks the light metric series, sized for small-bore lines from DN6 to DN12 where space and weight matter.
• Lock nut option for vibration. Order the -LN version and the fitting ships with a matched lock nut, so you can lock the joint after tightening and keep it from backing off under shock and vibration.
• OEM-ready. Laser marking, custom plating, material test reports and batch traceability, with lock nuts and fittings supplied as matched sets.

Standards and traceability. Threads are ISO 724 metric threads, with pitch variants marked in the part number. The sealing geometry follows the metric 90-degree cone configuration used across the widely adopted Chinese 10-series hose fitting numbering system. 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.

Cone Angle Guide: Why 90 Degrees Is Different from 60 and 24

Hydraulic cone seals look similar at a glance, but the cone angle is the single most important identification feature. The 10811L male end seals on a cone with a 90-degree included angle, which means each sealing flank sits at 45 degrees to the thread axis. If you put a 90-degree cone fitting into a port machined for a 60-degree or 24-degree cone, the surfaces will not mate and the joint will leak.

Two practical checks before you order: measure or identify the cone angle of your port, and confirm the thread is metric. If you are unsure, send us a photo of the port and the old fitting – the angle and the pitch are visible in a clear picture, and we will confirm the right series the same day.

What does the L in 10811L mean?

The L marks the light metric series. Light-series fittings use smaller body and thread envelopes for the same nominal hose bore where the circuit pressure class allows it, which saves weight and fits tighter layouts. When your hose assembly has to run in a confined space on a small-bore line, the 10811L light series is usually the right starting point.

What is the lock nut version (-LN)?

The -LN version adds a matched lock nut to the fitting. The lock nut is threaded onto the male stud after the joint is tightened and torqued against the mating surface, which locks the fitting at a fixed position and prevents it from backing off under shock, vibration and pressure cycling. The lock nut hex size S2 is listed in the dimension table so your tooling plan can include it from the start. Order 10811L-XX-XXLN when you need the nut; order the base number when you do not.

10811L 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 cone zone fatigue-resistant; typical surface hardness range HRC 20-28 (confirm the exact code on your drawing or PO).
• Lock nut: supplied with the -LN versions, plated to match the fitting for corrosion consistency.

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 of the fitting body, S2 = hex across flats of the lock nut. Part numbers ending in A carry an alternative thread pitch (for example 10811L-12-04A is M12x1 while 10811L-12-04 is M12x1.25).

To order the lock nut version, add -LN to the part number, for example 10811L-12-04LN. Full dimensioned CAD drawings are available on request so your engineers can verify every length and the cone geometry 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 10811L fitting depends on the hose you pair it with and the crimp quality. Wire-braided hydraulic hose in this small-bore range typically operates between roughly 150 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 Hose Can You Use?

The 10811L part numbers in this table are designed for wire-braided hydraulic hose, typically 1SN or 2SN (SAE 100 R1AT / R2AT class). The barbed tail and the ferrule geometry are matched to braided hose construction, so pair the fitting with the hose dash size shown in the table. If your application uses a different hose construction, send us the hose specification and we will confirm the correct fitting before you order.

Part Number Decoder and How to Order

The 10811L part number carries the whole specification, so purchasing can copy it straight into a PO without another round of emails:

10811L – 20 – 08

• 10811L = light-series 90-degree cone fitting for braided hose
• 20 = thread nominal size (here M20x1.5)
• 08 = hose dash size (here DN12, 1/2-inch class bore)

Suffixes you will meet:

• A = alternative thread pitch on the same nominal size. For example 10811L-12-04A is M12x1, while 10811L-12-04 is M12x1.25. Read the pitch on the old fitting or the port before ordering.
• LN = supplied with the matching lock nut, for example 10811L-12-04LN. The lock nut hex (S2) is listed in the dimension table.

Because one thread size can serve several hose bores, always quote both the thread size and the dash size. If you are replacing an existing fitting, send us a photo of the thread end, the cone and the hose side, plus the hex size, and we will confirm the matching part number the same day. This service is the fastest way to convert an unreadable old part number into a confirmed 10811L order number – and it also tells you whether your port is a 90-degree cone or another family.

Assembly Guide: Four Steps to a Reliable Crimp

These fittings are crimp-style hose ends: the barbed tail is pushed into the hose and a matching ferrule is crimped over the cover. 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. Do not use grease on the cone face.

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. The measured value must sit inside the allowed tolerance band. 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 mix cone-angle families. A 90-degree cone fitting must go into a 90-degree port seat; 60-degree and 24-degree ports take their own series. If the threads happen to fit but the angle does not, the joint will leak.
• Never mix hoses, fittings and ferrules from different manufacturers. Even when the dash size matches, crimp parameters and barb geometry differ, and a mismatched set can leak or pull apart under pressure.
• Never put PTFE tape or sealant on the straight metric thread, and do not double-seal a cone joint with washers or O-rings. The cone does the sealing; anything between the faces prevents it from seating.

Lock nut use on the -LN version

Torque the fitting into the port first, position the assembly as required, then run the lock nut down and torque it against the mating face. Check that the lock nut hex (S2) matches your tooling before you start, and re-check the lock nut torque after the first pressure cycles on prototypes.

Typical Applications

Metric 90-degree cone ports appear on compact and small-bore hydraulic circuits across many machine types, especially equipment built to Chinese or Asian standards and their global service networks:

• Agricultural and forestry machinery
• Small hydraulic power units and machine tools
• Plastic injection and die-casting machinery
• Material handling and mobile equipment
• Construction and mining auxiliary circuits
• Marine and offshore auxiliary systems

Wherever the port carries a machined 90-degree cone seat and the line is wire-braided hose, the 10811L series is the direct hose connection – with a lock nut option when the machine vibrates.

OEM Customization and Quality Traceability

For equipment builders and large maintenance programs, the 10811L series can be adapted to your exact drawing and your traceability rules.

Customization options

• Thread and geometry: special threads, modified lengths, pitch variants and non-standard barb 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.
• Lock nut supply: nuts pre-fitted, loose in the same box, or kitted per assembly to match your line-side process.
• 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, cone faces and lock nuts, then packed in export cartons labeled with part number, quantity and batch code. Custom labeling, kitting and barcode requirements are available for distributors and OEMs. Exact carton quantity, gross weight and CBM are confirmed on the packing list for every order so you can calculate freight before you commit.

FAQ

Q: What is a metric 90-degree cone hydraulic hose fitting? A: It is a crimp-style hose fitting with a metric male thread that seals metal-to-metal on a cone with a 90-degree included angle (45 degrees per flank). No O-ring and no thread sealant are needed.

Q: What is the difference between 90-degree, 60-degree and 24-degree cone fittings? A: The cone angle. This series uses a 90-degree included angle, 10611-type fittings use 60 degrees, and DIN 2353 style fittings use 24 degrees. The angles do not mate with each other, so each port takes its own family.

Q: What does the L in 10811L mean? A: L marks the light metric series, sized for small-bore lines from DN6 to DN12 where a compact body and lower weight are wanted.

Q: What does the -LN suffix mean? A: -LN means the fitting is supplied with a matching lock nut. The lock nut locks the joint after tightening so it cannot back off under vibration, shock or pressure cycling. Its hex size is listed as S2 in the dimension table.

Q: What does the A suffix in a part number mean? A: A marks an alternative thread pitch on the same nominal size. For example 10811L-12-04A is M12x1 while 10811L-12-04 is M12x1.25. Always confirm the pitch on your port before ordering.

Q: Do I need thread tape or sealant on the male thread? A: No. The 90-degree cone does the sealing. Tape on a straight metric thread is useless and can contaminate the system. Use tape only on taper threads.

Q: Which hose can I use with a 10811L fitting? A: Wire-braided hydraulic hose in the matching dash size, typically 1SN or 2SN (SAE 100 R1AT/R2AT class). Send us your hose spec if you plan to use another construction.

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: 90-Degree Cone Hydraulic Hose Fittings with Confirmed Fit

Every 10811L metric 90-degree cone hydraulic hose fitting in this range is made to controlled dimensions, inspected before packing and backed by batch traceability. Send us your hose type, thread size and a photo of the port or the old fitting, and you will get a confirmed part number, the right suffix (-LN or A if needed), a delivery date and a quote within one working day. Request samples first if you want to test the fit on your own bench. Whether you need the base fitting or the lock nut version, we make sure the fitting, ferrule and hose work as one leak-free assembly.