Fastener Guide / Technical Reference

Nickel-Alloy Fasteners

Nickel alloys such as Monel, Inconel and Hastelloy are used where stainless is not enough: severe corrosion, high temperature or both.

Last reviewed 2026-09-10 · Governing standard: ASTM F467-24(2026) / F468-23(2026); alloy specifications above · reference FG-DD80DA · Report an error on this sheet

Common alloys

AlloyTypical specStrength point
Monel 400ASTM B164; F467/F468Seawater, acids
Monel K-500ASTM B865Age-hardened, higher strength
Inconel 625ASTM B446Heat and corrosion
Inconel 718AMS / ASTM B637High strength at temperature
Hastelloy C-276ASTM B574Severe chemical service

These tables carry the same figures as the printed sheet below.

The printed sheet

Nickel-Alloy Fasteners

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Text version of this sheet

Nickel-alloy fasteners · severe corrosion and high temperature

What it is

FIELD IDENTIFICATION

Nickel alloys such as Monel, Inconel and Hastelloy are used where stainless is not enough: severe

corrosion, high temperature or both.

MFG

Marking depends on the alloy specification

Common alloys

Alloy

Typical spec

Strength point

Monel 400

ASTM B164; F467/F468

Seawater, acids

Monel K-500

ASTM B865

Age-hardened, higher strength

Inconel 625

ASTM B446

Heat and corrosion

Inconel 718

AMS / ASTM B637

High strength at temperature

Hastelloy C-276

ASTM B574

Severe chemical service

Key points

Traceability and certs are the product. Marks vary by maker.

Governing standards: ASTM F467-24(2026) / F468-23(2026); alloy specifications above. Editions shown are the latest confirmed as of September 2026. The drawing and the

governing standard always take precedence over this sheet.

torquing any fastener. Verify the current governing standard, project documents, OEM requirements, size, thread, coating and lot certification. To the fullest extent permitted by law, The Fastener App disclaims liability

arising from reliance on this reference.

Fastener Guide reference FG-DD80DA · thefastenerapp.com/fastener-guide/technical-reference/nickel-alloy-fasteners · © The Fastener App. Reference only — verify the current governing standard, drawing and manufacturer data before specifying or installing.

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← Mechanical Galvanizing and Zinc-Flake CoatingsTorque Calculation Methods →

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