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ASTM and SAE Specifications

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 2 SAE Grade 1        
ASTM A307 Low Carbon Steel 1/4 thru 1-1/2
1/4 thru 1-1/2
Over 1-1/2 thru 4
33000
33000
60000
60000
55000
SAE Grade 2 Low Carbon Steel 1/4 thru 3/4
Over 3/4 thru 1-1/2
55000
33000
74000
60000
SAE Grade 3 SAE Grade 3 Med. Carbon Steel Cold Worked 1/4 thru 1/2
Over 1/2 thru 5/8
85000
80000
110000
100000
SAE Grade 5 SAE Grade 5 Med. Carbon Steel Quenched and
Tempered
1/4 thru 1
Over 1 thru 1-1/2
85000
74000
120000
105000
ASTM  A449   1/4 thru 1
Over 1 thru 1-1/2
Over 1-1/2 thru 3
85000
74000
55000
120000
105000
90000
ASTM A325 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 B8 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 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 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 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 SAE Grade 8 Med. Carbon Alloy
Steel, Quenched and
Tempered
     
ASTM A354
Grade BD
Alloy Steel Quenched
and Tempered
1/4 thru 1-1/2 120000 150000
ASTM A490 ASTM A490 Alloy Steel, Quenched and
Tempered
1/2 thru 2-1/2
Over 2-1/2 thru 4
120000
105000
150000
140000
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