• According To:JIS B0203
  • Material:Alloy Steel
  • Hardness:HRC 36~43

Unit:inch

Nominal
Size
D Threads
Per Inch
J T L R
Nominal
O.D
Hexagon Socket Size Key
Engagement
Minimum
Overall Length Basic Pitch Diameter
at Socket Face
Nominal Tolerance Nominal Tolerance Nominal Tolerance
1/16 7375 28 4 +0.10
+0.03
3.0 6.0 0.4 0.45 +1.1
0
1/8 9.728 28 5 +0.10
+0.03
3.5 7.0 0.4 0.45 +1.1
0
1/4 13.157 19 6 +0.10
+0.03
4.5 9.0 0.4 0.7 +1.5
0
3/8 16.662 19 8 +0.13
+0.04
5.0 10.0 0.5 0.7 +1.5
0
1/2 20.955 14 10 +0.13
+0.04
6.0 12.0 0.5 0.9 +2
0
3/4 26.441 14 14 +0.23
+0.05
7.0 16.0 0.5 0.9 +2
0
1 33.249 11 17 +0.23
+0.05
9.0 17.5 0.5 1.1 +2.2
0