Monel 400 Socket Head Cap ScrewASTM B164 · ASME B18.3 · Manufacturer, stockist & exporter, India
Alloy 400 · UNS N04400
A Monel 400 socket head cap screw is a screw with a cylindrical head and hexagon socket, made from Monel 400 to ASTM B164. Allen-type cap screws are used where the head must sit flush or space is tight.
- ASTM B164
- ASME B18.3
- EN 10204 3.1 / 3.2
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is a Monel 400 Socket Head Cap Screw?
- What it is
- A screw with a cylindrical head and hexagon socket
- Material
- ASTM B164
- Dimensions
- ASME B18.3 · DIN 912 / ISO 4762
- Grade
- Monel 400 · UNS N04400
- Best at
- Seawater, hydrofluoric acid and marine service
Monel 400 Socket Head Cap Screw Specification
| Product | Monel 400 Socket Head Cap Screw |
|---|---|
| Material standard | ASTM B164 |
| Dimensional standard | ASME B18.3 · DIN 912 / ISO 4762 |
| Sizes | M10 – M64 · ½" – 4" (others on request) |
| Threads | UNC · UN-8 · metric coarse |
| Testing | PMI · dimensional · NDT and IGC on request |
| Documents | EN 10204 3.1 · 3.2 with third-party inspection |
When to Choose a Socket Head Cap Screw
Allen-type cap screws are used where the head must sit flush or space is tight.
- Hex socket drive
- ASME B18.3 · DIN 912
- Metric and inch
More on choosing: Socket head cap screw guide.
Monel 400 Socket Head Cap Screw: Why 400 for socket head cap screws
Allen-type cap screws are used where the head must sit flush or space is tight. In Monel 400, the choice usually comes down to the medium and temperature — the rows here are the points buyers check for this exact combination.
| Why this grade | Nickel-alloy fasteners match nickel-alloy flanges in corrosive or hot service. Monel 400 is picked for seawater, hydrofluoric acid and marine service. |
|---|---|
| Typical service | Marine — Pump shafts, valves and seawater piping. |
| Bolting | B7 (coated), B8M or nickel-alloy studs such as Monel 400 from ASTM B164, as the project specifies |
| Sour service | Listed in NACE MR0175 / ISO 15156-3 within its limits — state it on the order |
Monel 400 Socket Head Cap Screw Chemical Composition
| Element | Weight % |
|---|---|
| Nickel (+Co) | 63.0 min |
| Copper | 28.0 – 34.0 |
| Iron | 2.5 max |
| Manganese | 2.0 max |
| Carbon | 0.3 max |
| Silicon | 0.5 max |
| Sulphur | 0.024 max |
Monel 400 Socket Head Cap Screw Mechanical Properties
| Annealed plate | Value |
|---|---|
| Tensile strength | 480 MPa · 70 ksi |
| Yield strength 0.2% | 195 MPa · 28 ksi |
| Elongation | 35% |
Full chemistry, properties and equivalents are on the Monel 400 grade page.
Standards on this page
Other Monel 400 fasteners
Monel 400 Socket Head Cap Screws for export
FOB / CIF · Nhava Sheva (JNPT), MumbaiMonel 400 Socket Head Cap Screw — questions buyers ask
DIN 912 and ISO 4762 — are they the same?
Yes, ISO 4762 replaced DIN 912 with the same main dimensions.
What nut is used with Monel 400 socket head cap screws?
A nut in the same alloy, machined from ASTM B164 bar, unless the project specifies otherwise.
Which standard covers Monel 400 socket head cap screws?
The material is ASTM B164; dimensions follow ASME B18.3 · DIN 912 / ISO 4762. Always state both on your purchase order, with the edition if your project specifies one.
What decides the price of a Monel 400 socket head cap screw?
The alloy price, the size and dimensions, quantity, and the testing and documents required. Send your list and we quote the same working day.
Can you supply Monel 400 socket head cap screws to NACE MR0175?
Yes. Monel 400 is listed in NACE MR0175 / ISO 15156-3 within its limits; state NACE compliance on the order and it is confirmed on the certificate.
What documents do you supply?
EN 10204 3.1 mill certificates as standard, 3.2 with third-party inspection on request, plus dimensional and PMI reports.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026