Fastener Guide / Technical Reference

ASTM A354 Grade BD

Grade BD is the high-strength grade of A354, similar in tensile strength to SAE Grade 8. It is used for heavy industrial joints and engineered anchors, and it is not a structural-bolt substitute.

Last reviewed 2026-09-10 · Governing standard: ASTM A354-26; ASTM A563/A563M-26 · reference FG-293E63 · Report an error on this sheet

MarkingBD plus manufacturer ID
NutASTM A563 DH
CoatingsElectroplating carries hydrogen-embrittlement risk; hot-dip galvanizing of BD is generally avoided

Mechanical properties (ASTM A354 Grade BD)

SizeProofYield (min)Tensile (min)Hardness
1/4 to 2-1/2 in120 ksi130 ksi150 ksiC33 - C39
over 2-1/2 to 4 in105 ksi115 ksi140 ksiC31 - C39

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

The printed sheet

ASTM A354 Grade BD

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Text version of this sheet

ASTM A354 · Grade BD · quenched and tempered alloy steel

What it is

FIELD IDENTIFICATION

Grade BD is the high-strength grade of A354, similar in tensile strength to SAE Grade 8. It is used for

heavy industrial joints and engineered anchors, and it is not a structural-bolt substitute.

MFG

BD

Marking

BD plus manufacturer ID

Nut

ASTM A563 DH

Coatings

Electroplating carries hydrogen-embrittlement risk; hot-dip galvanizing of BD is

generally avoided

Marked BD + manufacturer ID

Mechanical properties (ASTM A354 Grade BD)

Size

Proof

Yield (min)

Tensile (min)

Hardness

1/4 to 2-1/2 in

120 ksi

130 ksi

150 ksi

C33 - C39

over 2-1/2 to 4 in

105 ksi

115 ksi

140 ksi

C31 - C39

What it is not

Not an ASTM F3125 A490 structural bolt, even though the tensile number is close. Different product, rules and installation.

Governing standards: ASTM A354-26; ASTM A563/A563M-26. 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-293E63 · thefastenerapp.com/fastener-guide/technical-reference/astm-a354-grade-bd · © The Fastener App. Reference only — verify the current governing standard, drawing and manufacturer data before specifying or installing.

Related sheets

← ASTM A354 Grade BCASTM A449 Bolts →

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