Monel 400 U-boltASTM B164 · MSS SP-58 / manufacturer standard · Manufacturer, stockist & exporter, India
Alloy 400 · UNS N04400
A Monel 400 u-bolt is a U-shaped bolt for clamping pipes to supports, made from Monel 400 to ASTM B164. U-bolts hold pipes to supports and structures. Sized by pipe NPS with a threaded length on each leg.
- ASTM B164
- MSS SP-58 / manufacturer standard
- 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 U-bolt?
- What it is
- A U-shaped bolt for clamping pipes to supports
- Material
- ASTM B164
- Dimensions
- MSS SP-58 / manufacturer standard
- Grade
- Monel 400 · UNS N04400
- Best at
- Seawater, hydrofluoric acid and marine service
Monel 400 U-bolt Specification
| Product | Monel 400 U-bolt |
|---|---|
| Material standard | ASTM B164 |
| Dimensional standard | MSS SP-58 / manufacturer standard |
| 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 an U-bolt
U-bolts hold pipes to supports and structures. Sized by pipe NPS with a threaded length on each leg.
- Sized to pipe NPS
- With nuts and plates
- Matching or isolated material
More on choosing: U-bolt guide.
Monel 400 U-bolt: Why 400 for u-bolts
U-bolts hold pipes to supports and structures. Sized by pipe NPS with a threaded length on each leg. 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 U-bolt 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 U-bolt 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 U-bolts for export
FOB / CIF · Nhava Sheva (JNPT), MumbaiMonel 400 U-bolt — questions buyers ask
Should U-bolts match the pipe material?
Use the same alloy, or an isolating sleeve, to avoid galvanic corrosion between pipe and bolt.
What nut is used with Monel 400 u-bolts?
A nut in the same alloy, machined from ASTM B164 bar, unless the project specifies otherwise.
Which standard covers Monel 400 u-bolts?
The material is ASTM B164; dimensions follow MSS SP-58 / manufacturer standard. Always state both on your purchase order, with the edition if your project specifies one.
What decides the price of a Monel 400 u-bolt?
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 u-bolts 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