Page 459 - Shigley's Mechanical Engineering Design

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434 Mechanical Engineering Design
Table 8–10

ASTM Specifications for Steel Bolts

ASTM Size Minimum Minimum Minimum
Desig- Range, Proof Tensile Yield
nation Inclusive, Strength,* Strength,* Strength,*
No. in kpsi kpsi kpsi Material Head Marking
A307 1 –1 1 33 60 36 Low carbon
4 2

A325, 1 2 –1 85 120 92 Medium carbon, Q&T
type 1
1
1 –1 1 74 105 81 A325
8 2

A325, 1 2 –1 85 120 92 Low-carbon, martensite,
type 2 Q&T
1
1 –1 1 74 105 81 A325
8 2

A325, 1 2 –1 85 120 92 Weathering steel,
type 3 Q&T
1
1 –1 1 74 105 81 A325
8 2

A354, 1 4 –2 1 2 105 125 109 Alloy steel, Q&T
grade BC
3
2 –4 95 115 99 BC
4

A354, 1 4 –4 120 150 130 Alloy steel, Q&T
grade BD

A449 1 –1 85 120 92 Medium-carbon, Q&T
4
1
1 –1 1 74 105 81
8 2
3
1 –3 55 90 58
4
A490, 1 2 –1 1 2 120 150 130 Alloy steel, Q&T
type 1 A490

A490, 1 2 –1 1 2 120 150 130 Weathering steel,
type 3 Q&T A490

*Minimum strengths are strengths exceeded by 99 percent of fasteners.