What material grade does W-545 Fasteners use?

W-545 Fasteners are manufactured per the applicable ASTM, ASME, DIN, or ISO specification for the material grade. TorqBolt provides material test certificates (MTC) per EN 10204 3.1 or 3.2 with every supply.

What sizes are available for W-545 Fasteners?

TorqBolt manufactures W-545 Fasteners in metric sizes M6 to M100 and imperial sizes 1/4" to 4" diameter, with custom lengths from 10mm to 3000mm. Non-standard sizes are available on request.

Are W-545 Fasteners NACE MR0175 / ISO 15156 certified?

Yes, W-545 Fasteners can be supplied with NACE MR0175 / ISO 15156-2/3 sour service certification when specified at order. Material certificates and test reports are provided.

What is the typical delivery time for W-545 Fasteners?

Standard stock items ship in 1-2 weeks. Custom manufactured W-545 Fasteners typically ship in 4-6 weeks depending on quantity, material availability, and certification requirements.

Do you provide third-party inspection for W-545 Fasteners?

Yes, third-party inspection by TUV, Lloyd's Register, BV, DNV, SGS, and Intertek is available upon request for W-545 Fasteners. Witness testing and stage inspections can be arranged.

W-545 Fasteners Manufacturer & Supplier

Name: W-545 Fasteners
Brand: TorqBolt
SKU: TB-W545FASTENERS
Availability: InStock

W-545 Fasteners Specification

W-545 Fasteners like Heavy Hex Bolts Screws Nuts Washers

W-545 Fasteners Properties

Chemical Properties
Iron	Cobalt	Carbon	Manganese	Silicon	Molybdenum	Tungsten	Niobium	Titanium	Aluminium	Boron	Zirconium	Others
Bal	–	0.08b	1.50	0.40	1.5	–		2.85	0.20	0.08	–	–

Physical Properties
TEC 10-6.K-1	Electrical resistivity (bulk) 10-6.cm	Oxidation Resistance 10-6 mg2.cm-4.s-1	Corrosion resistance: Hot corr.=HCR Carbariz.=CR Stress corr.=SCR	Others Machinability(%)
–	–	–	–	–

Mechanical Properties
Yield strength 0.2 (bar) (MPa)	Elastic modulus (GPa)	Elongation
–	–	–

Equivalent Designation
UNS	British Standard	Werkstoff No	En-Name	Swedish	Jis-Sus
–	–	–	–	–	–

W-545 Bolts, W-545 Nuts, W-545 Studs, W-545 Washers, W-545 Washers, W-545 Screws, W-545 Set Screws, W-545 Hex Bars, W-545 Rings, W-545 Threaded Rod are some of the most important keywords used in the fastener industry. TorqBolt is recognised amongst the well known W-545 Fasteners suppliers from Mumbai India.

Proudly serving the need of nuclear research centers, space centers, power plants, onshore & offshore industry, oil and gas industry, automation.

With timely delivery of W-545 Fasteners we are most trustworthy fastener manufacturer in india considering our warehousing & storage with ultramodern techniques including ERP. Torqbolt has a dedicated logistics team looking after custom needs of estemmed clients including shipments by Air,Ocean,Land" with variable payment options like COD,CAD and on agreablee incoterms like DDU,CIF,CNF,FOB basis.On Special request we also provide swift facilities like TCI,GATI,DHL,FEDEX,TNT,UPS

TorqBolt manufactures W 545 Fasteners via cold forging, hot forging and CNC machining. Sizes range from M1.0 to M100 (metric) and 1/16" to 4" (imperial). Available in coarse, fine, UNC, UNF, UN, BSW and acme threads with half, full or double-end thread configurations. Each W 545 Fasteners batch is supplied with EN 10204 3.1 or 3.2 material test certificates.

Hexagon Bolts

ANSI B18.2.1
ANSI B18.2.3.1M
DIN 931
DIN 933
BS 1768
UNI 5731
UNI 5737
UNI 5739
ISO 4014
ISO 4017
BS 1769
BS 3692

Socket/Slotted Set Screws

DIN 913
DIN 914
DIN 915
DIN 916
DIN 551
DIN 553
DIN 438
BS 4168

Socket/Slotted Countersunk Screws

DIN 963
DIN 7991
BS 4168
BS 1981
BS 483
BS 2470

Socket Cap Screws

ANSI B18.3
B18.3.1M
DIN 912
DIN 6912
DIN 7984
ANSI B18.3
ISO 4762
UNI 5931
BS 2470
BS 4168

Stud Bolts

ASME B18.2.1
DIN 976
DIN 938
DIN 939
DIN 2510
BS 4439
BS 2693
BS4882

Nuts

ANSI B18.2.2
ANSI B18.2.4.6M
DIN 934
DIN 936
BS 1768
BS 1769
BS 1083
BS 3692
ISO 4032
ISO 4033
ISO 4035
UNI 5587
UNI 5588
UNI 5589

Washers

ASME B18.22.1
ASTM F436
ISO 7089
DIN 125
DIN 9021
BS 4320
BS 3410
DIN 127
BS 4464
BS 1802
UNI 6952

W 545 Fasteners — Material Overview & Form Factors

W 545 is a high-performance alloy used wherever standard fasteners cannot meet the corrosion, temperature, or strength envelope. TorqBolt manufactures the full W 545 fastener range — bolts, nuts, screws, washers, studs, and custom forgings — under one ISO 9001:2015 quality system, with PED 2014/68/EU module-H qualification for pressure-equipment service.

Where W 545 Excels

W 545 is specified in oil & gas wellhead components, refinery heat exchangers, petrochemical reactors, power-generation turbines, marine offshore platforms, and pharmaceutical / food-grade processing. Its corrosion resistance, high-temperature strength, and weldability make it the default for service conditions outside the carbon and standard-stainless envelope.

Form Factors Available

Bolts — hex, heavy hex, socket, button, countersunk; M6–M100 / 1/4"–4"

Nuts — standard, heavy, jam, locking variants (nyloc, all-metal, flange)

Screws — cap, machine, set, shoulder, self-tapping; all common drive types

Washers — plain, spring, lock, Belleville, fender, tab

Studs & threaded rod — ASTM A193 / A320 / A453 / A540

Custom forgings — rings, blanks, shaped components to drawing

Standards & Certification

W 545 fasteners are supplied with EN 10204 3.1 (mill cert) or 3.2 (third-party witnessed) material test reports as standard. Additional certification packages: NACE MR0175 / ISO 15156 (sour service), NORSOK M-650 (subsea / topside), API 6A (wellhead), API 20E (subsea bolting), PED 2014/68/EU (pressure equipment). Third-party inspection by TUV, Lloyd's, BV, DNV, SGS, and Intertek arrangeable on order.

Lead Time & Sizes

Stock items in standard W 545 fastener sizes ship in 1–2 weeks; custom-manufactured items in 4–6 weeks subject to material availability. Diameters M6–M100 and 1/4"–4", lengths 10 mm–3000 mm covered in-house; oversize / non-standard sizes quoted to specification.

Specialty Fastener Alloys

TorqBolt manufactures specialty fasteners across the full range of corrosion-resistant alloys (CRAs), high-temperature superalloys, and engineered metallurgies required by the process industries. Beyond the high-volume Inconel, Hastelloy, Duplex, and stainless grades, our supply chain covers a long tail of specification-driven alloys for unique service envelopes — sour wells, extreme cryogenics, pharmaceutical-grade purity, oxidizing acids, chlorinated solvents, and high-temperature cyclic-load fasteners.

Each specialty alloy is sourced from approved mills with full melt traceability through a closed forging route. Heat-treat condition, mechanical properties, and corrosion testing are controlled to the customer's drawing or governing specification — whether ASTM, ASME, AMS, MIL, NORSOK, NACE, or proprietary end-user codes. EN 10204 3.1 (mill cert) or 3.2 (third-party witnessed) material test certificates are issued with every lot, listing chemistry, mechanicals at relevant test temperatures, hardness, dimensional inspection, and any corrosion or NDT test results required.

Third-party inspection by TUV, Lloyd's, BV, DNV, SGS, and Intertek is arrangeable. NACE MR0175 / ISO 15156 sour-service qualification, NORSOK M-650 mill qualification, API 6A wellhead bolting, API 20E subsea bolting, and PED 2014/68/EU pressure-equipment compliance available across the alloy range as the application demands.

W-545 Fasteners