Metric Thread Stud End ISO 6149 Adapter 1CH/1DH | Metric O-Ring Stud Ends, M10x1 to M52x2

Why This metric thread stud end ISO 6149 adapter 1CH/1DH Passes the Compliance Gate

The metric thread stud end ISO 6149 adapter 1CH/1DH is a straight adapter with a metric male stud end at each end and an O-ring listed for every row, so both ports seal on a machined flat face without thread sealant. Threads run from M12x1.5 to M52x2 at the E end and from M10x1 to M48x2 at the F end, so the range covers both same-size transitions, such as 1CH-22 with M22x1.5 at both ends, and size changes, such as 1CH-30-22 with an M30x2 stud end at E joined to an M22x1.5 stud end at F. The pressure column is printed per row with its series code, 31.5 MPa and 16 MPa for the light L rows and 63 MPa and 40 MPa for the heavy S rows.

This is the adapter for circuits that change metric port size or metric thread pitch without changing the sealing system. Because every row keeps the same O-ring interface, a store can cover a whole machine with one O-ring family and one torque table.

Ventajas principales

1. O-ring sealed metric stud ends at both ends. Every row lists its O-ring size, from O08.1X1.6 to O44.5X3.0 as printed, so the seal is a catalog item rather than a judgement call.
2. Size and pitch transitions inside one family. Metric threads from M10x1 to M52x2 are covered, including the fine pitch M10x1 and the sizes M27x2, M33x2 and M48x2.
3. Pressure class printed per row. 31.5 MPa and 16 MPa in the light L group and 63 MPa and 40 MPa in the heavy S group.
4. Forty-three tabulated rows. Same-size rows and reducing rows share one dimension set of B, I1, L1, S1 and S2.
5. Documented, traceable supply. Batch traceability, dimensional records and material test reports support incoming inspection.
6. OEM marking. Laser marking of your part number, logo and batch code is available on the body or the hex.

Especificaciones técnicas

What Is a metric thread stud end ISO 6149 adapter 1CH/1DH?

It is a straight adapter with two external metric threads and an O-ring at each end, sealing on the flat port face of an ISO 6149 port. The two ends may differ in thread size, and the table lists the O-ring for each row, so the seal at each end matches the thread in that row.

It is not a 24 degree cone fitting, not a JIC 74 degree cone fitting and not a BSP threaded adapter. Fittings that look identical at the thread can belong to different sealing systems, and the sealing system decides whether the joint will seal. Check the port standard and the listed O-ring before ordering.

Connection 1 – Metric male stud end (E)

Connection 2 – Metric male stud end (F)

Dimensional Data

Full Dimension Table (Part Number Matrix)

All dimensions are in millimetres and are transcribed row by row from the product data sheet. O-ring codes are reproduced exactly as printed, so O11.3X2.4 reads as an 11.3 mm inside diameter by 2.4 mm cross-section ring. One L1 cell on the 1CH-52-48 row is not legible on the printed sheet, so it is marked [to be confirmed] and will be stated in writing on the order drawing.

Thread Size and Dash Chart

Material y tratamiento térmico

The values above describe normal commercial practice for this family and are confirmed on the order drawing, not replaced by it.

Working Pressure and Operating Envelope

Working pressure for the metric thread stud end ISO 6149 adapter 1CH/1DH is read from the pressure column of the matrix, converted where needed at 1 MPa about 145 psi: 31.5 MPa is roughly 4,570 psi, 16 MPa about 2,320 psi, 63 MPa about 9,135 psi and 40 MPa about 5,800 psi. The class printed against a row covers both stud ends and the tube range listed in the same row.

A pressure class is one input only. Both ports must take the same class, and the finished assembly is only as strong as its weakest member. Ask for a rating table with your enquiry and we will state the figure, the tube range and the test method that apply to your combination.

Rango de temperatura

The typical service window is -40 °C to +120 °C for the standard construction, set by the O-ring elastomer rather than by the steel body. Where FKM or another elastomer is fitted, the window follows that material. Confirm the elastomer and the fluid with us before ordering for hot or aggressive service.

Cómo interpretar la tabla de referencias

The order code carries up to three pieces of information: the series prefix, the metric thread at E, and the metric thread at F when the two differ.

1. Prefix – 1CH or 1DH. 1CH identifies the light L series rows and 1DH the heavy S series rows, so the prefix carries the pressure class.
2. Second group – thread at E. In 1CH-30-22 the group 30 is the M30x2 stud thread at connection 1.
3. Third group – thread at F. The group 22 is the M22x1.5 stud thread at connection 2. When only one group follows the prefix, as in 1CH-22, both ends carry that same thread.

Two examples make the pattern clear. 1CH-14-12 joins an M14x1.5 end to an M12x1.5 end for 8 mm tube with an O09.3X2.4 ring at 31.5 MPa, which converts a metric port down one size inside the same sealing system. 1DH-20-22 joins an M20x1.5 end to an M22x1.5 end for 12 mm tube with an O19.3X2.4 ring at 63 MPa, which steps up inside the heavy series. Ordering by part number keeps the O-ring and the pressure class in the same row.

Selección y pedido

Servicio de referencias cruzadas

Send an old part number, a photograph or a worn sample of the metric thread stud end ISO 6149 adapter 1CH/1DH and we will cross it to the closest row of this matrix. The answer states both threads, the O-ring, the tube size, the pressure class and the hexes explicitly so you can verify it against your own measurement, the service is free, and we never re-label another maker’s part as our own.

Embalaje y logística

Adapters ship in individual bags inside cartons, grouped by part number, with batch code and quantity on the outer label. Mixed cartons are routine for distributors and repair workshops. Material test reports travel with the goods when ordered, standard rows ship quickly from stock, and air freight covers urgent shutdown dates.

Installation and Fitment Guide

Step-by-Step Assembly

1. Confirm both thread callouts, the O-ring size and the series against the circuit before starting work.
2. Check both port faces for burrs, paint or old sealant, because an O-ring face seal needs a clean flat landing.
3. Fit new O-rings of the listed size to both stud ends, lightly lubricated with a compatible fluid.
4. Thread both ends in by hand and confirm the body sits square before tightening either end.
5. Tighten each stud end to the torque value for its thread size and material from the applicable standard data table.
6. Pressure test the finished assembly at the circuit working pressure and record the result.

Torque and Sealing Notes

Tighten each stud end to the torque values for its own thread size, material and coating from the applicable standard data table, and treat those figures as a starting point to be confirmed against your own test. The O-ring face seal does not need thread sealant, and tape or paste on the stud thread can force the O-ring out of its groove. On a reducing row the two ends carry different threads, so use the torque for each end separately rather than one figure for the part. Over-tightening does not improve the seal and can stretch the thread or distort the port face.

Advertencias sobre la instalación

• ✔ Confirm both ports are ISO 6149 flat-face O-ring type before fitting this adapter.
• ✔ Fit new O-rings of the listed size whenever a joint is broken, using the size from the row you ordered.
• ✔ Use a spanner on the S1 or S2 hex and hold the body steady when breaking a joint.
• ✔ Check that the row matches both port callouts when the two ends differ in size.
• ❌ Never fit this adapter into a 24 degree cone port, a 74 degree cone JIC port or a BSP port, because those sealing systems differ from the ISO 6149 O-ring interface.
• ❌ Never interchange this metric stud end with an inch O-ring stud end from the ISO 11926 family, even where thread diameters look close.
• ❌ Never ignore the change in pressure class on the larger light series rows, where the class steps from 31.5 MPa to 16 MPa.
• ❌ Never use thread tape or sealant on the O-ring stud thread to stop a weep.

Applications and Industries

The metric thread stud end ISO 6149 adapter 1CH/1DH appears wherever two metric O-ring ports of different thread size must be joined.

• Port size correction. A block with an M14x1.5 port is matched to an M12x1.5 line with one row instead of a bushing and a second adapter.
• Repair and replacement. A damaged adapter at a metric port is replaced with the same row, keeping the O-ring size and pressure class with the circuit.
• Test rigs and benches. Instrumentation lines are re-terminated across metric thread sizes without changing the sealing system.
• Industrial plant. Lubrication, cooling and clamp circuits use one O-ring family across several port sizes.
• Mobile and construction machinery. Heavy S series rows cover higher pressure circuits while light L rows serve return and pilot lines.

Tags: hydraulic adapter, metric thread stud end, ISO 6149 adapter, O-ring sealing stud end, light series L, heavy series S, metric reducing adapter, straight hydraulic fitting.

Personalización OEM y trazabilidad de la calidad

We manufacture matching hydraulic adapters and hose assemblies alongside our hose range, so specials are quoted engineering work rather than a favour. Laser marking of your part number, logo, date code and batch code is available on the body or the hex, and custom finishes, non-standard thread combinations, special body lengths and alternative O-ring elastomers are quoted from your drawing or sample, normally within 24 hours.

Every batch is traceable from raw material to finished part. Batch records, dimensional results and material test reports are available with the goods, third-party inspection such as BV or SGS can be arranged, and finished assemblies are pressure tested with results recorded for the lot. Ordering the metric thread stud end ISO 6149 adapter 1CH/1DH on a repeat schedule keeps one drawing, one O-ring family and one traceability record behind every port.

Preguntas frecuentes

Q: Is this adapter an O-ring seal or a cone seal? A: It is an O-ring seal. Every row lists an O-ring and both stud ends seal on the flat port face of an ISO 6149 port, so it is not a 24 degree cone adapter and not a JIC 74 degree cone adapter.

Q: Can the two ends have different thread sizes? A: Yes. Rows such as 1CH-30-22 join an M30x2 end to an M22x1.5 end, and rows such as 1DH-14-12 join an M14x1.5 end to an M12x1.5 end. Where only one size group follows the prefix, both ends are the same size.

Q: What pressure can the metric thread stud end ISO 6149 adapter 1CH/1DH take? A: Read the class printed for your row: 31.5 MPa or 16 MPa in the light L group and 63 MPa or 40 MPa in the heavy S group. That class covers both stud ends and the tube range in the same row, and the finished assembly is only as strong as its weakest member.

Q: Why do the larger light series rows drop to 16 MPa? A: The data sheet prints the class per row, and the larger light series rows are printed at 16 MPa while the smaller rows are printed at 31.5 MPa. Always take the class from the row you ordered rather than from the family heading.

Q: Which O-ring do I need? A: Use the O-ring size printed in the row, from O08.1X1.6 up to O44.5X3.0. NBR is standard for general mineral-oil hydraulic service across roughly -40 °C to +120 °C, and FKM is available for higher temperatures or aggressive media.

Q: How do I convert the pressure class to psi? A: At 1 MPa about 145 psi, 31.5 MPa is roughly 4,570 psi, 16 MPa about 2,320 psi, 40 MPa about 5,800 psi and 63 MPa about 9,135 psi.

Q: What about the M16X22 code printed on one row? A: Row 1CH-16-22 is reproduced exactly as printed on the data sheet, where the E thread appears as M16X22, and it belongs to the M16 metric stud end range. Confirm the callout against the order drawing if you are matching an existing part number.

Q: Can you mark our part number on the adapter? A: Yes. Laser marking of part number, logo and batch code is available on the body or the hex, and specials are normally quoted within 24 hours.

Solicitar un presupuesto

Send the thread at each port, the port standard, the tube outside diameter, the series and pressure class needed, and the material and surface treatment you require. To speed up a quotation on the metric thread stud end ISO 6149 adapter 1CH/1DH, add the drawing and a note of the O-ring size you are using. We reply with part number, listed O-ring, printed pressure class, confirmed dimensions, price and lead time within 24 hours, and trial samples can be arranged at the same time.

Browse the full Adaptadores hidráulicos range for the complete family, or contact us to request a quote, mill test reports, and samples.