Stud: MS21259 Series (AN666)
CORROSION RESISTANT STEEL

The MS21259 series stud end fittings from Loos Cableware® Division are manufactured from stainless steel in accordance with MIL-DTL-781 to the strict standards of MS21259 and are certified to that standard. Loos Cableware® Division offers a full range of sizes in this part series of stainless steel swage fittings.
MS21259 cable fittings are used throughout the cable and wire rope industry in applications where a cable must be terminated with a swage fitting that will exceed the minimum breaking strength of the cable onto which it is swaged.
MIL-DTL-781: YES
MADE IN THE USA: YES
DFARS COMPLIANT: YES

MS Part RH Thread |
MS Part LH Thread |
Cable Dia. |
Thread B UN-3A UNF-3A |
A Dia |
As Dia |
C Dia |
D |
L ±.063 |
Ls Ref |
N Dia |
| MS21259-2RH* |
MS21259-2LH* |
1/16 |
6-40 |
.160 |
.138 |
.121 |
.188 |
2.473 |
2.65 |
.078 |
| MS21259-3RH* |
MS21259-3LH* |
3/32 |
10-32 |
.218 |
.190 |
.169 |
.250 |
2.879 |
3.00 |
.109 |
| MS21259-4RH* |
MS21259-4LH* |
1/8 |
1/4-28 |
.250 |
.219 |
.226 |
.313 |
3.333 |
3.59 |
.141 |
| MS21259-5RH* |
MS21259-5LH* |
5/32 |
1/4-28 |
.297 |
.250 |
.226 |
.313 |
3.627 |
3.97 |
.172 |
| MS21259-6RH* |
MS21259-6LH* |
3/16 |
5/16-24 |
.359 |
.313 |
.285 |
.375 |
4.002 |
4.17 |
.203 |
| MS21259-7RH* |
MS21259-7LH* |
7/32 |
3/8-24 |
.427 |
.375 |
.347 |
.438 |
4.516 |
4.81 |
.234 |
| MS21259-8RH* |
MS21259-8LH* |
1/4 |
3/8-24 |
.494 |
.438 |
.347 |
.500 |
4.937 |
5.24 |
.265 |
| MS21259-9RH* |
MS21259-9LH* |
9/32 |
7/16-20 |
.563 |
.500 |
.405 |
.625 |
5.391 |
5.75 |
.297 |
| MS21259-10RH* |
MS21259-10LH* |
5/16 |
1/2-20 |
.635 |
.563 |
.467 |
.688 |
5.844 |
6.27 |
.328 |
| MS21259-12RH* |
MS21259-12LH* |
3/8 |
9/16-18 |
.703 |
.625 |
.529 |
.750 |
6.656 |
7.06 |
.390 |
| MS21259-14RH |
MS21259-14LH |
7/16 |
5/8-18 |
.781 |
.688 |
.592 |
.812 |
7.437 |
7.91 |
.468 |
| MS21259-16RH |
MS21259-16LH |
1/2 |
5/8-18 |
.844 |
.750 |
.592 |
.875 |
8.187 |
8.75 |
.531 |
| MS21259-18RH |
MS21259-18LH |
9/16 |
3/4-16 |
.984 |
.875 |
.717 |
1.000 |
9.125 |
9.72 |
.594 |
| MS21259-20RH |
MS21259-20LH |
5/8 |
7/8-14 |
1.109 |
1.000 |
.842 |
1.125 |
10.375 |
11.06 |
.656 |
| MS21259-24RH |
MS21259-24LH |
3/4 |
1-12 |
1.359 |
1.250 |
.967 |
1.437 |
12.063 |
12.64 |
.781 |
| MS21259-28RH |
MS21259-28LH |
7/8 |
1-1/8-12 |
1.593 |
1.437 |
1.092 |
1.625 |
13.226 |
13.99 |
.921 |
| MS21259-32RH |
MS21259-32LH |
1 |
1-1/4-12 |
1.812 |
1.625 |
1.217 |
1.875 |
14.969 |
15.88 |
1.046 |
MS Part RH Thread |
MS Part LH Thread |
Cable Dia. |
Thread B UN-3A UNF-3A |
P |
V +.005 -.000 |
S +.062 -.000 |
W ±.016 |
Y +.083 -.020 |
Lbs. Per Piece |
| MS21259-2RH* |
MS21259-2LH* |
1/16 |
6-40 |
1.042 |
.063 |
.969 |
1.174 |
1.045 |
.01 |
| MS21259-3RH* |
MS21259-3LH* |
3/32 |
10-32 |
1.261 |
.063 |
1.188 |
1.411 |
1.204 |
.0225 |
| MS21259-4RH* |
MS21259-4LH* |
1/8 |
1/4-28 |
1.511 |
.063 |
1.438 |
1.682 |
1.376 |
.0375 |
| MS21259-5RH* |
MS21259-5LH* |
5/32 |
1/4-28 |
1.761 |
.063 |
1.688 |
1.958 |
1.376 |
.0475 |
| MS21259-6RH* |
MS21259-6LH* |
3/16 |
5/16-24 |
2.011 |
.098 |
1.938 |
2.237 |
1.458 |
.08 |
| MS21259-7RH* |
MS21259-7LH* |
7/32 |
3/8-24 |
2.261 |
.098 |
2.188 |
2.518 |
1.625 |
.12 |
| MS21259-8RH* |
MS21259-8LH* |
1/4 |
3/8-24 |
2.511 |
.098 |
2.438 |
2.784 |
1.750 |
.165 |
| MS21259-9RH* |
MS21259-9LH* |
9/32 |
7/16-20 |
2.761 |
.098 |
2.688 |
3.076 |
1.875 |
.265 |
| MS21259-10RH* |
MS21259-10LH* |
5/16 |
1/2-20 |
3.011 |
.098 |
2.938 |
3.026 |
2.000 |
.375 |
| MS21259-12RH* |
MS21259-12LH* |
3/8 |
9/16-18 |
3.511 |
.098 |
3.438 |
3.828 |
2.250 |
.500 |
| MS21259-14RH |
MS21259-14LH |
7/16 |
5/8-18 |
4.011 |
.098 |
3.938 |
4.375 |
2.300 |
.625 |
| MS21259-16RH |
MS21259-16LH |
1/2 |
5/8-18 |
4.698 |
.125 |
4.625 |
5.093 |
2.500 |
.75 |
| MS21259-18RH |
MS21259-18LH |
9/16 |
3/4-16 |
5.011 |
.125 |
4.938 |
5.468 |
3.000 |
1.00 |
| MS21259-20RH |
MS21259-20LH |
5/8 |
7/8-14 |
5.511 |
.125 |
5.438 |
6.093 |
3.500 |
1.50 |
| MS21259-24RH |
MS21259-24LH |
3/4 |
1-12 |
6.511 |
.125 |
6.438 |
7.188 |
4.000 |
2.75 |
| MS21259-28RH |
MS21259-28LH |
7/8 |
1-1/8-12 |
7.166 |
.125 |
7.094 |
7.846 |
4.500 |
3.90 |
| MS21259-32RH |
MS21259-32LH |
1 |
1-1/4-12 |
8.229 |
.125 |
8.156 |
9.000 |
5.000 |
5.35 |
* Denotes Stock Item
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