Fastener Guide / Technical Reference

Bolt / Nut / Washer Matching Card

The usual nut and washer for each common bolt. Every line is a typical match; the drawing or specification governs.

Last reviewed 2026-09-10 · Governing standard: SAE J429 (2014) / J995 (2017); ASTM A563, F436, F3125, A193, A194, F593, F594; ISO 898-1:2013 / 898-2:2022 · reference FG-73770F · Report an error on this sheet

Pairing card

BoltNutWasher
SAE J429 Grade 2SAE J995 Grade 2 or 5USS / SAE flat
SAE J429 Grade 5SAE J995 Grade 5SAE / USS flat
SAE J429 Grade 8SAE J995 Grade 8Hardened
ASTM A307 AASTM A563 AUSS / SAE flat
F3125 A325ASTM A563 (DH if galvanized)ASTM F436 as required
F3125 A490ASTM A563 DH / DH3ASTM F436
ISO 898-1 8.8ISO 898-2 class 8ISO 7089 / 7090
ISO 898-1 10.9ISO 898-2 class 10Hardened
ASTM A193 B7ASTM A194 2HAs specified
F593 Group 1 / 2F594 Group 1 / 2Stainless flat

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

The printed sheet

Bolt / Nut / Washer Matching Card

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Text version of this sheet

Typical bolt, nut and washer pairings

What it is

FIELD IDENTIFICATION

The usual nut and washer for each common bolt. Every line is a typical match; the drawing or

specification governs.

Bolt, washer and nut - match all three to the

joint

Pairing card

Bolt

Nut

Washer

SAE J429 Grade 2

SAE J995 Grade 2 or 5

USS / SAE flat

SAE J429 Grade 5

SAE J995 Grade 5

SAE / USS flat

SAE J429 Grade 8

SAE J995 Grade 8

Hardened

ASTM A307 A

ASTM A563 A

USS / SAE flat

F3125 A325

ASTM A563 (DH if galvanized)

ASTM F436 as required

F3125 A490

ASTM A563 DH / DH3

ASTM F436

ISO 898-1 8.8

ISO 898-2 class 8

ISO 7089 / 7090

ISO 898-1 10.9

ISO 898-2 class 10

Hardened

ASTM A193 B7

ASTM A194 2H

As specified

F593 Group 1 / 2

F594 Group 1 / 2

Stainless flat

Key points

Grade 8 is not A325, and 10.9 is not A490. Structural bolts are only replaced with structural bolts.

Governing standards: SAE J429 (2014) / J995 (2017); ASTM A563, F436, F3125, A193, A194, F593, F594; ISO 898-1:2013 / 898-2:2022. 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-73770F · thefastenerapp.com/fastener-guide/technical-reference/bolt-nut-washer-matching-card · © The Fastener App. Reference only — verify the current governing standard, drawing and manufacturer data before specifying or installing.

Related sheets

← ASTM F837 Stainless Socket Cap ScrewsASTM A193 Grade B7 / B8 / B8M →

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Hardware and Building Supplies4%33
All other20%162

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Brunswick Galvanizing Inc.14.6%
Talleyrand Signs LLC8.0%
Mayport Tool & Die Inc.7.8%
Eagle Mechanical LLC7.2%
Premier Electric Group5.9%
Tallahassee Packaging LLC3.7%
Coastal Maintenance Group3.3%
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CustomerHours a monthHours a week
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Brunswick Galvanizing Inc.25.35.8
Talleyrand Signs LLC13.93.2
Mayport Tool & Die Inc.13.53.1
Eagle Mechanical LLC12.52.9
Premier Electric Group10.22.4
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Coastal Maintenance Group5.71.3
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