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HEXAGON HEAD BOLT 80 UNC<br />
Bumax 88-U6S<br />
A4-SS 2343-316L HiMo<br />
EN1.4436<br />
SS 1943 (ANSI B18.2)<br />
Thread<br />
d UNC 1/4 5/16 3/8 1/2 5/8 3/4 7/8 1<br />
No. of threads<br />
per inch 20 18 16 13 11 10 9 8<br />
s inch 7/16 1/2 9/16 3/4 15/16 1.1/8 1.5/16 1.1/2<br />
s mm 11.1 12.7 14.3 19 23.8 28.6 33.3 38.1<br />
k 4 5.2 6 7.9 9.9 11.9 13.9 15.5<br />
e (min.) 12.39 14.15 15.95 21.34 26.69 31.85 37.21 42.55<br />
Length of thread engagement b<br />
for 1 to 152 inclusive 19 22 25 32 38 44 51 57<br />
over 152 51<br />
Bolt length l Approximate weight per 100<br />
inch mm kg kg kg kg kg kg kg kg<br />
1/2 13 0.56 0.95<br />
5/8 16 0.62 1.1 1.5<br />
3/4 19 0.66 1.1 1.6<br />
7/8 22 1.7<br />
1<br />
1.1/4<br />
1.1/2<br />
25 0.79 1.3 1.9 3.8<br />
32 0.97 1.5 2.2 4.4<br />
Bumax 38 1.1 1.8 88-U6S<br />
2.5 4.8<br />
6.8<br />
7.7<br />
8.5<br />
12<br />
13 20<br />
1.3/4 45 1.3 2.0 2.9 5.6 9.4 15<br />
2 51 1.4 2.3 3.3 6.2 10 16 24 33<br />
2.1/4 57 3.6 6.7 11 17 35<br />
2.1/2 64 1.7 2.8 3.9 7.5 12 19 27 37<br />
2.3/4 70 4.3 8.1 13 20 29<br />
3 76 2.0 3.2 4.7 8.7 14 21 31 42<br />
3.1/4 83 5.0 9.2 15 23 33<br />
3.1/2 89 3.7 5.3 10 16 24 35 47<br />
4 102 4.3 6.1 11 18 27 39 52<br />
4.1/2 114 6.7 12 20 30 42 57<br />
5 127 7.4 14 23 33 46 61<br />
5.1/2 140 8.2 15 24 36 50 67<br />
6 152 8.7 16 26 38 54 71<br />
6.1/2 165 41<br />
7<br />
Nut type<br />
178 44<br />
Bumax 88-U6M 0.32 0.47 0.69 1.6 3.2 5.3 9.2 14<br />
Sample order: A4-U6S 1/4x13<br />
Screws above the stepped line are fully-threaded.<br />
Can be manufactured to order as Bumax 109.<br />
Packaging<br />
Diameter 1/4 5/16 3/8 1/2 5/8 3/4 7/8 1<br />
No. per pack 100 50 50 25 25 10 10 10<br />
15
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