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ASTM A307 Continuous Stud Bolts-NINGBO BOLT

 

ASTM A307 Studs Specification

           

ASTM A307 Continuous Stud Bolts

Dimensions for Continuous Thread Studs
Nominal Size Diameter,D Threads Per Inch Chamfered Thread Distance, U
UNC UNF 8UN UNC UNF 8UN
Max Min Max Min Max Min
 1/4 0.2500 20 28 ... 0.100 0.050 0.071 0.036 ... ...
 5/16 0.3125 18 24 ... 0.111 0.056 0.083 0.042 ... ...
 3/8 0.3750 16 24 ... 0.125 0.063 0.083 0.042 ... ...
 7/16 0.4375 14 20 ... 0.143 0.072 0.100 0.050 ... ...
 1/2 0.5000 13 20 ... 0.154 0.077 0.100 0.050 ... ...
 9/16 0.5625 12 18 ... 0.167 0.084 0.111 0.056 ... ...
 5/8 0.6250 11 18 ... 0.182 0.091 0.111 0.056 ... ...
 3/4 0.7500 10 16 ... 0.200 0.100 0.125 0.063 ... ...
 7/8 0.8750 9 14 ... 0.222 0.111 0.143 0.072 ... ...
1 1.0000 8 12 ... 0.250 0.125 0.167 0.084 ... ...
 1-1/8 1.1250 7 12 8 0.286 0.143 0.167 0.084 0.250 0.125
 1-1/4 1.2500 7 12 8 0.286 0.143 0.167 0.084 0.250 0.125
 1-3/8 1.3750 6 12 8 0.333 0.167 0.167 0.084 0.250 0.125
 1-1/2 1.5000 6 12 8 0.333 0.167 0.167 0.084 0.250 0.125
 1-5/8 1.6250 ... ... 8 ... ... ... ... 0.250 0.125
 1-3/4 1.7500 5 ... 8 0.400 0.200 ... ... 0.250 0.125
 1-7/8 1.8750 ... ... 8 ... ... ... ... 0.250 0.125
2 2.0000  4-1/2 ... 8 0.444 0.222 ... ... 0.250 0.125
 2-1/4 2.2500  4-1/2 ... 8 0.444 0.222 ... ... 0.250 0.125
 2-1/2 2.5000 4 ... 8 0.500 0.250 ... ... 0.250 0.125
 2-3/4 2.7500 4 ... 8 0.500 0.250 ... ... 0.250 0.125
3 3.0000 4 ... 8 0.500 0.250 ... ... 0.250 0.125
 3-1/4 3.2500 4 ... 8 0.500 0.250 ... ... 0.250 0.125
 3-1/2 3.5000 4 ... 8 0.500 0.250 ... ... 0.250 0.125
 3-3/4 3.7500 4 ... 8 0.500 0.250 ... ... 0.250 0.125
4 4.0000 4 ... 8 0.500 0.250 ... ... 0.250 0.125

 

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