UNC Threads
Available with metric threads.
Also available with optional bolt lengths.
Top washer has the following features:
- The Working Load Limit and Recommended Torque value are permanently stamped into each washer.
- Washer is color coded for easy identification Red - UNC thread
Bolt Size Identification
The size of the bolt will be stated as in the following example.
Illustration shows meaning of each dimension given.
|
Mfg. # |
CSI Ref. # |
Torque (ft. lbs.) |
Est. Weight Each (lbs.) |
Working Load Limit* (lbs.) |
|
1016887† |
CS-07-1389 |
7 |
0.43 |
800 |
|
1016898† |
CS-07-1390 |
12 |
0.43 |
1,000 |
|
1016909 |
CS-07-1391 |
28 |
2.49 |
2,500 |
|
1016912† |
CS-07-1392 |
28 |
2.52 |
2,500 |
|
1016920 |
CS-07-1393 |
60 |
2.55 |
4,000 |
|
1016924† |
CS-07-1394 |
60 |
2.7 |
4,000 |
|
1016931 |
CS-07-1395 |
100 |
2.65 |
5,000 |
|
1016935† |
CS-07-1396 |
100 |
3 |
5,000 |
|
1016942 |
CS-07-1397 |
100 |
7 |
7,000 |
|
1016946† |
CS-07-1398 |
100 |
7 |
7,000 |
|
1016953 |
CS-07-1399 |
160 |
7 |
8,000 |
|
1016957† |
CS-07-1400 |
160 |
7 |
8,000 |
|
1016964 |
CS-07-1401 |
230 |
7.5 |
10,000 |
|
1016969† |
CS-07-1402 |
230 |
7.5 |
10,000 |
|
1016975 |
CS-07-1403 |
470 |
14.79 |
15,000 |
|
1016986 |
CS-07-1404 |
800 |
33 |
24,000 |
|
1016997 |
CS-07-1405 |
1100 |
36 |
30,000 |
* Ultimate load is 5 times the Working Load Limit.
† Long bolts are designed to be used with soft metal (i.e., aluminum) work pieces. While the long bolts may also be used with ferrous metal (i.e.,steel & iron) work pieces, short bolts are designed for ferrous work pieces only.
†† Bolt specification is a Grade 8 Alloy socket head cap screw to ASTM A 574. All threads listed are UNC - 3A.
UNC Threads Specifications
|
Mfg. # |
Dimensions (in.) |
|
Bolt Size †† A |
Effective Thread Projection Length B |
C |
D |
Radius E |
Diameter F |
G |
H |
|
1016887† |
5/16–18 x 1.5 |
0.59 |
2.69 |
1 |
0.46 |
0.38 |
1.69 |
1.11 |
|
1016898† |
3/8–16 x 1.5 |
0.59 |
2.69 |
1 |
0.46 |
0.38 |
1.69 |
1.09 |
|
1016909 |
1/2–13 x 2 |
0.71 |
4.82 |
2 |
0.88 |
0.75 |
3.3 |
2.29 |
|
1016912† |
1/2–13 x 2.5 |
1.21 |
4.82 |
2 |
0.88 |
0.75 |
3.3 |
2.29 |
|
1016920 |
5/8–11 x 2 |
0.71 |
4.82 |
2 |
0.88 |
0.75 |
3.3 |
2.21 |
|
1016924† |
5/8–11 x 2.75 |
1.46 |
4.82 |
2 |
0.88 |
0.75 |
3.3 |
2.21 |
|
1016931 |
3/4–10 x 2.25 |
0.96 |
4.82 |
2 |
0.88 |
0.75 |
3.3 |
2.05 |
|
1016935† |
3/4–10 x 2.75 |
1.46 |
4.82 |
2 |
0.88 |
0.75 |
3.3 |
2.05 |
|
1016942 |
3/4–10 x 2.75 |
0.9 |
6.55 |
3 |
1.37 |
1 |
4.73 |
2.98 |
|
1016946† |
3/4–10 x 3.5 |
1.65 |
6.55 |
3 |
1.37 |
1 |
4.73 |
2.98 |
|
1016953 |
7/8–9 x 2.75 |
0.9 |
6.55 |
3 |
1.37 |
1 |
4.73 |
2.85 |
|
1016957† |
7/8–9 x 3.5 |
1.65 |
6.55 |
3 |
1.37 |
1 |
4.73 |
2.85 |
|
1016964 |
1–8 x 3 |
1.15 |
6.55 |
3 |
1.37 |
1 |
4.73 |
2.73 |
|
1016969† |
1–8 x 4 |
2.15 |
6.55 |
3 |
1.37 |
1 |
4.73 |
2.73 |
|
1016975 |
1-1/4–7 x 4.5 |
2.22 |
8.7 |
3.75 |
1.75 |
1.25 |
6 |
3.92 |
|
1016986 |
1-1/2–6 x 6.5 |
2.98 |
12.39 |
4.75 |
2.25 |
1.75 |
8 |
5.64 |
|
1016997 |
2–4-1/2 x 6.5 |
2.98 |
12.39 |
4.75 |
2.25 |
1.75 |
8 |
5.14 |
* Ultimate load is 5 times the Working Load Limit.
† Long bolts are designed to be used with soft metal (i.e., aluminum) work pieces. While the long bolts may also be used with ferrous metal (i.e.,steel & iron) work pieces, short bolts are designed for ferrous work pieces only.
†† Bolt specification is a Grade 8 Alloy socket head cap screw to ASTM A 574. All threads listed are UNC - 3A.
