What material grade does Inconel 617 Fasteners use?

Inconel 617 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 Inconel 617 Fasteners?

TorqBolt manufactures Inconel 617 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 Inconel 617 Fasteners NACE MR0175 / ISO 15156 certified?

Yes, Inconel 617 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 Inconel 617 Fasteners?

Standard stock items ship in 1-2 weeks. Custom manufactured Inconel 617 Fasteners typically ship in 4-6 weeks depending on quantity, material availability, and certification requirements.

Do you provide third-party inspection for Inconel 617 Fasteners?

Yes, third-party inspection by TUV, Lloyd's Register, BV, DNV, SGS, and Intertek is available upon request for Inconel 617 Fasteners. Witness testing and stage inspections can be arranged.

Inconel 617 Fasteners Manufacturer & Supplier

Inconel 617 Fasteners Specification

Inconel 617 Fasteners Heavy Hex Bolts Screws Nuts Washers

Inconel Alloy 617 is a Nickel chromium cobalt molybdenum alloy with an exceptional combination of metallurgical stability, strength and oxidation resistance at high temperatures. Resistance to oxidation is provided by an aluminium addition. The alloy also resists a wide range of corrosive aqueous environments and thus used in gas turbines for combustion cans, ducting and transition liners, petrochemical processing, heat treating and equipment and in nitric acid production.

Inconel 617 Fasteners Properties

Equivalent Designation
ASTM/ASME	AISI	UNS	British Standard	Werkstoff No.	En Name	Swedish(SS)	JIS(SUS)
–	–	N06617	–		–	–	–

TorqBolt manufactures Inconel 617 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 Inconel 617 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

Surface Treatments & Coatings

Electro Less Nickel Plating Electro Cadmium Plating Dacromet 320 500 Coating Pickled Passivated Fasteners Silver Plating Nickel Plating Electro Zinc Cobalt Plating Electro Zinc Nickel Plating Ptfe Fluorocarbon Coating Aluminizing Ceramic Filled Fluorocarbon Coating

Related Products

12 Point Flange Bolt Allen Screw Anchor Bolts Carriage Bolts Custom Bolts Draw Bolts Elevator Bolts Eye Bolts Flange Bolts Hanger Bolts Heavy Hex Head Bolts Hex Head Bolts J Bolts Lag Bolts Machine Bolts Plow Bolts Shoulder Bolts Step Bolts Stove Bolts Stud Bolts Tap Bolts U Bolts Double End Stud Bolts Full Threaded Studs Bolts Half Threaded Studs Bolts Tap End Studs 12 Point Flange Nuts Acorn Nuts Cap Nuts Castle Nuts Coupling Nuts Doomed Nuts Flange Lock Nuts Flex Lock Nuts Heavy Hex Nuts Hex Nuts High Nuts Jam Nuts Kep Nuts Nuts Nylon Lock Nuts Serrated Flange Nuts Slotted Nuts Square Nuts T Nut T Nuts Wing Nuts Belleville Washers Bowed Spring Washers Conical Spring Washers Countersunk Washers Curved Spring Washers Dock Washers Dome Tooth Washers Dome Washers External Lock Washers Fender Washers Finger Spring Washers Flat Washers Hex Washers Hexagonal Washers Internal Lock Washers Lock Washers Ogee Washers Plain Washers Split Lock Washers Spring Washers Square Washers Tab Washers Tooth Lock Washers Torque Washers Wave Spring Washers Inconel 617 Allen Screws Inconel 617 Eye Bolts Inconel 617 Set Screws Inconel 617 Screws Inconel 617 Hex Bolts Inconel 617 Bolts Inconel 617 Socket Cap Screws Inconel 617 U Bolts Inconel 617 Stud Bolts Inconel 617 Threaded Rod Inconel 617 Acorn Nuts Inconel 617 Coupling Nuts Inconel 617 Nuts Inconel 617 Hex Nuts Inconel 617 Jam Nuts Inconel 617 Nylon Lock Nuts Inconel 617 Square Nuts Inconel 617 Wing Nuts Inconel 617 Flat Washers Inconel 617 Lock Washers Inconel 617 Washers Inconel 617 Spring Washers Inconel 617 Flange Rings Inconel 617 Forged Rings Inconel 617 Rings

Inconel 617 Fasteners — Material Overview & Form Factors

Inconel 617 is a high-performance alloy used wherever standard fasteners cannot meet the corrosion, temperature, or strength envelope. TorqBolt manufactures the full Inconel 617 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 Inconel 617 Excels

Inconel 617 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

Inconel 617 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 Inconel 617 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.

Inconel — Nickel-Chromium Superalloys

Inconel alloys are nickel-chromium-based superalloys engineered for service where standard stainless steels cannot survive. The Inconel family combines high-temperature strength (typically retained up to 700-1100°C depending on grade) with outstanding oxidation and chloride-pitting resistance.

The most widely specified grade is Inconel 718, an age-hardenable Ni-Cr-Fe-Mo-Nb composition strengthened by γ' (Ni₃Al,Ti) and γ'' (Ni₃Nb) precipitates after solution + double-age heat treatment per AMS 5662 / 5663. Inconel 625 is solid-solution strengthened by Mo+Nb, supplied in the as-annealed condition, and weldable without post-weld heat treatment. Inconel X-750 uses Ti+Al precipitation hardening for spring + bolt applications to 700°C. Inconel 600 / 601 are general-purpose grades for furnace and heat-exchanger fasteners.

Typical specifications: ASTM B637 (forged bar), AMS 5662/5663 (rod/bar), ASTM B446 (625 bar), DIN 17752/17754 (round/forged). NACE MR0175 / ISO 15156 sour-service envelopes available on most grades when supplied in the correct heat-treat condition. PREN values for chloride pitting resistance typically exceed 50 across the Inconel range.

Inconel 617 Fasteners