Monel 400 Bolts resist seawater and acids well. Marine and offshore buyers across UAE, Saudi Arabia, Qatar and the USA prefer them for this reason. Oshwin Overseas is a Monel fasteners manufacturer in India, based in Mumbai. UNS N04400 bolting materials are made to ASTM F468, B164 and F467 standards.
Oshwin has expertise in manufacturing Monel 400 hex bolts, threaded rod, stud bolts, flat washers and machine screws as per drawing. UNC and UNRC threading is available. Every bolt is forged and machined in-house at Oshwin's Kalamboli factory. This keeps material accuracy and delivery timelines consistent for repeat buyers.
No Age-Hardening Wait
Solid-solution strengthened and cold-worked - ready to ship, no heat-treat cycle.
M5-M36 In Stock Now
Fast dispatch for marine, chemical and offshore deadlines.
(ASTM F468)
- Grade
- UNS N04400
- Standard
- ASTM F468 / F467
- Size Range
- M5-M36 / ¼″-1½″
- Hardness
- 25 HRC max
- MTC
- EN 10204 3.1
- Lead Time
- 2-5 Days
Monel 400 Hex Bolts and Nuts Manufacturer in India, Supplied as Pre-Assembled Sets
Alloy 400 Stud Bolts and Threaded Rod per ASTM F468 / UNS N04400, Dimensioned to ASME B18.31.3 & DIN 976 Thread Profiles
Table of Contents
- Monel 400 Bolts Specification
- Every Monel 400 Fastener Type We Stock - Hex Bolt to Threaded Rod
- ASTM F468 UNS N04400 Chemical Composition
- Monel 400 Bolts Mechanical Properties & Yield Strength
- Monel 400 vs Monel K-500 Bolts - Which to Specify
- UNS N04400 Bolts Equivalent Grades
- Monel 400 Heavy Hex Bolt Dimensions
- Alloy 400 Bolts for Seawater & HF Acid Service
- Nickel-Copper 400 Bolts Galling & Anti-Seize Precautions
- Monel 400 Stud Bolts for Valve Stems & Seawater Piping
- Common Monel 400 Bolt & Threaded Rod Enquiries We Handle
- Applications of Monel 400 Bolts
- Alloy 400 Fastener Value-Added Services
- UNS N04400 Fasteners Standards Compliance
Monel 400 Bolts Specification
Monel 400 skips the age-hardening step entirely. That lets cold heading cover a wider size band than it does on our aerospace nickel grades. Larger stud bolts and odd head styles move to hot forging instead, then final machining at our Mumbai plant.
Cold Headed Monel Bolts
M5-M30 / 3/16″-1-1/4″, lengths 3-200mm
Hot Forged Fasteners
M30-M64 / 1-1/4″-2-1/2″, lengths up to 600mm
Certification
EN 10204 3.1 Material Test Certificate
Compliance
Sour-service testing to NACE MR0175 / ISO 15156 and API 6ACRA, quoted on request
Service Range
Cryogenic to 1000°F (538°C) continuous duty
Hex Bolt Dimensions
Governed by ASME B18.2.1 for head size and thread length
Hex Nut Dimensions
ASME B18.2.2 - thickness & width across flats
Thread Tolerance
Coarse (UNC), Fine (UNF) & UNRC per SAE J2295
Federal Spec
QQ-N-281 covers the same Monel 400 bar, rod & forging stock we bolt from
Sizes Buyers Order Most
Cut and threaded to your drawing for anything outside this list. UNRC coarse-thread form and SAE J2295 heavy hex sizes confirmed on request.
Same-Day Quote - send size, thread form and quantity. Price lands in your inbox within a day.
Monel 400 Bolts Manufacturer in India - Mumbai, Since 1999
Every batch is cold-worked, machined and tested before it ships.
Request Quote NowEvery Monel 400 Fastener Type We Stock - Hex Bolt to Threaded Rod
Every Monel 400 screw ships with its heat number stamped on the head.
ASTM F468 UNS N04400 Chemical Composition
Per ASTM F468 Class A (weldable Ni-Cu). Full heat-wise composition on the EN 10204 3.1 certificate.
Monel 400 Bolts Mechanical Properties & Yield Strength
Values shown are ASTM F468 Class A for 1/4″-3/4″ diameter. Yield drops to 30 ksi (207 MPa) min above 7/8″ - check your mill certificate.
Monel 400 vs Monel K-500 Bolts - Which to Specify
UNS N04400 Bolts Equivalent Grades
Monel 400 Heavy Hex Bolt Dimensions
SAE J2295 heavy hex bolt heads follow the same tooling geometry regardless of the metal behind them. The figures below cover our imperial heavy hex stock from 1/2″ through 1-1/2″ diameter.
| Nominal Dia. | Body Dia. Max (in) | Width Flats Basic (in) | Width Flats Max (in) | Width Flats Min (in) | Width Corners Max (in) | Width Corners Min (in) | Head Ht. Max (in) | Head Ht. Min (in) |
|---|---|---|---|---|---|---|---|---|
| 1/2″ | 0.515 | 7/8 | 0.875 | 0.850 | 1.010 | 0.969 | 0.364 | 0.302 |
| 5/8″ | 0.642 | 1-1/16 | 1.062 | 1.031 | 1.227 | 1.175 | 0.444 | 0.378 |
| 3/4″ | 0.768 | 1-1/4 | 1.250 | 1.212 | 1.443 | 1.383 | 0.524 | 0.455 |
| 7/8″ | 0.895 | 1-7/16 | 1.438 | 1.394 | 1.660 | 1.589 | 0.604 | 0.531 |
| 1″ | 1.022 | 1-5/8 | 1.625 | 1.575 | 1.876 | 1.796 | 0.700 | 0.591 |
| 1-1/4″ | 1.277 | 2 | 2.000 | 1.938 | 2.309 | 2.209 | 0.876 | 0.749 |
| 1-1/2″ | 1.531 | 2-1/4 | 2.250 | 2.175 | 2.598 | 2.480 | 1.036 | 0.902 |
Metric hex bolt dimensions (M5-M36) to ASME B18.2.1 are shared on request. For stud bolts, though, there's no fixed head table - end-to-end length is set by the flange thread-length rules in ASME B16.5/B16.47.
Monel 400 Fasteners Exporter & Distributor in India - Priority Cargo to USA & Malaysia
Ask about a route and we'll return a landed cost estimate with the paperwork attached.
Request Export QuoteAlloy 400 Bolts for Seawater & HF Acid Service
Nickel-Copper 400 Bolts Galling & Anti-Seize Precautions
One number drives bolt torque: the friction coefficient K. It's the only part of T = K × F × d that changes with the fastener material. Clamp load (F) and diameter (d) come from your design, not the alloy. Nickel-copper threads simply push K higher unless they're greased.
Galling Risk
Dry-fitted nickel-copper threads gall fast - lubricant is non-negotiable
Anti-Seize
A nickel-rated anti-seize paste prevents seizing on assembly
Torque Formula
T = K × F × d - K drops with the anti-seize you choose
Buyer-Specified Torque
Tell us the clamp load you need and we'll match it, rather than quoting a generic figure
Monel 400 Stud Bolts for Valve Stems & Seawater Piping
Common Monel 400 Bolt & Threaded Rod Enquiries We Handle
SAE J2295 heavy hex screws to ASTM F468 - 5/8″ and 3/4″ dia, UNC/UNRC threads. Class 2A fit, 30 ksi min yield.
Monel 400 stud bolts for a globe valve stem - ASTM B164 UNS N04400, seawater duty, 18″ PN10 valve.
Small-quantity Monel 400 hex bolt sets - M10x25 with matching nut and washer, no minimum order.
Buyers asking about ASTM B127 - we confirm F468/F467 is the correct bolt spec; B127 covers plate and sheet only.
Monel 400 U-bolts and eye bolts for marine mounts - corrosion-rated hardware for offshore brackets.
Monel 400 screws in machine and set-screw styles - short runs welcome, repeat buyers skip the minimum.
Monel 400 washers matched to the bolt heat number - flat and spring types, same certificate.
Monel 400 nuts to ASTM F467 alongside F468 bolts - matched sets, single MTC.
Applications of Monel 400 Bolts
Marine Engineering & Seawater Piping
HF Alkylation & Chemical Processing
Valve Stems & Pump Shafts
Offshore Oil & Gas Bolting
Desalination & Heat Exchanger Hardware
Monel 400 Bolts Supplier in India with NACE & API 6ACRA Compliance
Seawater-grade stock, tested and packed, waiting on our shelves right now.
Get Supplier QuoteMonel 400 Fastener Value-Added Services
Stock supply is only part of what we offer on Monel 400 fasteners. These finishing operations run in-house at our Mumbai facility.
Drilling
Tapping
Threading
Turning
Chamfering
Pipe Threading
Bending
Pickling & Descaling
Custom Cut-to-Length
One coating we skip: zinc or hot-dip galvanizing. Neither bonds properly to a nickel-copper surface, so we leave that option off the list.
Alloy 400 Fasteners Standards Compliance
Third-party inspection and full heat traceability are accepted on any Monel 400 order, against the standards below.
Our Export Network
As a monel 400 fasteners manufacturer in india, Oshwin Overseas ships Monel 400 Bolts from Mumbai, India to buyers worldwide. USA, Malaysia and Poland order most regularly, alongside steady demand from the Gulf, Africa and Southeast Asia.
Americas
USA
Canada
Middle East
UAE
Saudi Arabia
Qatar
Kuwait
Oman
Europe
Poland
United Kingdom
Netherlands
Germany
Turkey
Belgium
Africa
South Africa
Egypt
Nigeria
Southeast & South Asia
Malaysia
Singapore
Thailand
Indonesia
Philippines
Vietnam
South Korea
Australia
Recent Monel 400 Bolt Buyer Enquiries
Mumbai
Huntsville, AL
Product: UNS N04400 Heavy Hex Screws, ASTM F468
Size: 5/8″ & 3/4″ dia, UNC/UNRC 2A, 16 pcs total
Mumbai
Kuala Lumpur
Product: Monel 400 Stud Bolts, ASTM B164 UNS N04400
Size: 18″ / DN450 PN10 globe valve, seawater duty
Mumbai
Poland
Product: Monel 400 Nuts & Bolts, confirmed to ASTM F468/F467
Size: Buyer referenced ASTM B127 (sheet); routed to correct bolt spec
Mumbai
Laredo, TX
Product: Monel 400 Hex Bolt, Nut & Washer Set, UNS N04400
Size: M10 x 25mm, matching nut and washer
Delivery Estimate From Ready Stock
Ships from Mumbai
Packed and dispatched within 2-5 working days of order confirmation
Sea Freight
The lowest-cost route, 10-30 days depending on the destination port
Air Freight
Cuts transit to 3-6 days for a valve or shutdown deadline
Get a Firm Date
Name your discharge port and we'll lock in a delivery date
USA22-30 daysMalaysia12-18 daysPoland18-25 daysUAE10-16 daysTransit times shown are port-to-port by sea. Switching to air cuts every one of them down to 3-6 days.
FAQs - Monel 400 Bolts
F468 covers Monel 400 bolts, hex cap screws and studs. F467 covers the matching nuts. Both come from ASTM B164 bar stock, same heat, one certificate.
Minimum yield of ASTM F468 Class A is 40 ksi up to 3/4 inch dia, dropping to 30 ksi above 7/8 inch. Minimum tensile is 80 ksi, with 20% elongation.
Monel 400 has no age-hardening step. Monel K-500 is aged, reaching ~100 ksi yield. Choose K-500 for strength, 400 for easier welding and lower cost.
Yes. Nickel-copper threads gall under dry torque. Use a nickel-rated anti-seize on every joint and share your torque spec with your inquiry.
Yes, though they're different specs. B164 covers raw bar stock. F468 covers finished bolts and studs. Both trace to the same heat since we machine F468 studs from certified B164 bar.
Ex-stock: M5 to M36 metric, 1/4 inch to 1-1/2 inch UNC/UNF/UNRC. SAE J2295 heavy hex sizes and other sizes made to drawing.
Monel is a trade name covering several nickel-copper alloys, including 400, K-500 and R-405. Most buyers who search plain monel bolts actually need Monel 400 unless the job needs higher strength.
Price depends on size, quantity, thread form and any coating request. Share your spec on WhatsApp or by email and we'll return a firm ex-Mumbai quote the same day.