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 ASTM and SAE Specifications
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ASTM and SAE
Specifications, Proof Loads, Tensile Strengths |
| Grade Marking |
Specification |
Material |
Bolt and Screw
Size (Inches) |
Proof Load
psi |
Tensile Strength
min. psi |
 |
| SAE Grade 1 |
| ASTM A307 |
| SAE Grade 2 |
|
| Low Carbon Steel |
| Low Carbon Steel |
|
1/4 thru 1-1/2
1/4 thru 1-1/2
Over 1-1/2 thru 4 |
1/4 thru 3/4
Over 3/4 thru 1-1/2 |
|
33000
33000
.... |
55000
33000 |
|
60000
60000
55000 |
74000
60000 |
|
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SAE Grade 3 |
Med. Carbon Steel
Cold Worked |
1/4 thru 1/2
Over 1/2 thru 5/8 |
85000
80000
|
110000
100000 |
 |
|
Med. Carbon Steel
Quenched and
Tempered |
1/4 thru 1
Over 1 thru 1-1/2 |
1/4 thru 1
Over 1 thru 1-1/2
Over 1-1/2 thru 3 |
|
85000
74000 |
85000
74000
55000 |
|
120000
105000 |
120000
105000
90000 |
|
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ASTM A325 |
Med. Carbon Steel
Quenched and
Tempered |
1/2, 5/8, 3/4
7/8, 1
1-1/8 thru 1-1/2 |
85000
78000
74000 |
120000
115000
105000 |
 |
ASTM A354
Grade BB |
Low Alloy Steel
Quenched and
Tempered |
1/4 thru 2-1/2
Over 2-1/2 thru 4 |
80000
75000 |
105000
100000 |
 |
ASTM A354
Grade BC |
Low Alloy Steel
Quenched and
Tempered |
1/4 thru 2-1/2
Over 2-1/2 thru 4 |
105000
75000 |
125000
100000 |
 |
SAE Grade 5.1 |
Low or Med
. Carbon
Steel Quenched
and
Tempered with
Assembled Lock
Washer |
Up to 3/8 incl. |
85000 |
120000 |
 |
SAE Grade 7 |
Med. Carbon Alloy
Steel Quenched
and
Tempered. Roll
Threaded after
Heat
Treated
|
1/4 thru 1-1/2 |
105000 |
133000 |
 |
| SAE Grade 8 |
ASTM A354
Grade BD |
|
Med. Carbon Alloy
Steel, Quenched
and
Tempered
|
Alloy Steel
Quenched
and Tempered |
|
1/4 thru 1-1/2 |
120000 |
150000 |
 |
ASTM A490 |
Alloy Steel,
Quenched and
Tempered |
1/2 thru 2-1/2
Over 2-1/2 thru 4 |
120000
105000 |
150000
140000 |
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ASTM Specifications:
A 307: Low Carbon Steel Externally and Internally Threaded Standard Fasteners
A 325: High Strength Steel Bolts for Structural Steel Joints, including Suitable Nuts and Plain Hardened Washers
A 449: Quenched and Tempered Steel Bolts and Studs
A 354: Quenched and Tempered Alloy Steel Bolts and Studs with Suitable Nuts
A 490: High Strength Alloy Steel Bolts for Structural Steel Joints, including Suitable Nuts and Plain Hardened Washers
SAE Specification:
J 429c: Mechanical and Quality Requirements for Threaded Fasteners |
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