We recommend use of heavy hex and jam nuts to ensure sufficient
thread engagement lengths. This would require
minimum thread lengths to be approximately
1 1/2 to 2 times the nominal thread diameter.
The comparisons in these charts are based
on a design factor of 5 using XIP IWRC wire
rope minimum breaking forces for 6 x 19 and
6 x 37 classification ropes, aircraft cables
and carbon steel fittings.
| Studs
for 6-strand XIP IWRC wire ropes
all
dimensions are in inches
UNC
Threads |
| Nominal
rope dia. |
Standard Nominal
thread dia. |
Thread/in
coarse (UNC) |
| 1/4 |
1/2 |
13 |
| 5/16 |
9/16 |
12 |
| 5/16 |
5/8 |
11 |
| 3/8 |
3/4 |
10 |
| 7/16 |
7/8 |
9 |
| 1/2 |
7/8 |
9 |
| 9/16 |
1 |
8 |
| 5/8 |
1
1/8 |
7 |
| 5/8
|
1
1/4 |
7 |
| 3/4 |
1
3/8 |
6 |
| 7/8 |
1
1/2 |
6 |
| 1 |
1
3/4 |
5 |
| 1
1/8 |
2 |
4
1/2 |
| UNF
Threads |
| Nominal
rope dia. |
Standard Nominal
thread dia. |
Thread/in
fine (UNF) |
| 1/4 |
7/16 |
20 |
| 1/4 |
1/2 |
20 |
| 5/16 |
9/16 |
18 |
| 3/8 |
5/8 |
18 |
| 7/16 |
3/4 |
16 |
| 1/2 |
7/8 |
14 |
| 9/16 |
1 |
12 |
| 5/8 |
1
1/8 |
12 |
| 3/4 |
1
1/4 |
12 |
| 3/4 |
1
3/8 |
12 |
| 7/8 |
1
1/2 |
12 |
| Studs
for Aircraft Cable
UNC
Threads |
| Nominal
rope dia. |
Standard Nominal
thread dia. |
Thread/in
coarse (UNC) |
| 1/8 |
1/4 |
20 |
| 5/32 |
5/16 |
18 |
| 3/16 |
3/8 |
16 |
| 7/32 |
3/8 |
16 |
| 1/4 |
7/16 |
14 |
| 9/32 |
1/2 |
13 |
| 5/16 |
9/16 |
12 |
| 11/32 |
5/8 |
11 |
| 3/8 |
5/8 |
11 |
| UNF
Threads |
| Nominal
rope dia. |
Standard Nominal
thread dia. |
Thread/in
fine (UNF) |
| 1/8 |
1/4 |
28 |
| 5/32 |
5/16 |
24 |
| 3/16 |
3/8 |
24 |
| 7/32 |
3/8 |
24 |
| 1/4 |
7/16 |
20 |
| 9/32 |
1/2 |
20 |
| 5/16 |
1/2 |
20 |
| 3/8 |
9/16 |
18 |
| 11/32 |
5/8 |
18 |
