Filter by
Thread Size
Material
Fastener Head Type
Socket Head Profile
Drive Style
Thread Direction
DFARS Compliance
Thread Type
Thread Fit
Thread Spacing
About Socket Head Screws
More
Mil. Spec. 18-8 Stainless Steel Socket Head Screws
Fully Threaded
Partially Threaded
Choose these screws for their adherence to strict military standards for material and construction. Dimensions meet Fed. Spec. FF-S-86 specifications. Screws may be mildly magnetic. Length is measured from under the head.
Coarse threads are the industry standard; choose these screws if you don’t know the threads per inch.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing  | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||||||
2-56 | |||||||||||
| 3/16" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 5/64" | 80,000 | MS16995-1, NAS1352C02-3, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 00000 |
| 1/4" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 5/64" | 80,000 | MS16995-2, NAS1352C02-4, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 3/8" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 5/64" | 80,000 | MS16995-3, NAS1352C02-6, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 1/2" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 5/64" | 80,000 | MS16995-4, NAS1352C02-8, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
4-40 | |||||||||||
| 1/4" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 3/32" | 80,000 | MS16995-9, NAS1352C04-4, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 3/8" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 3/32" | 80,000 | MS16995-10, NAS1352C04-6, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 1/2" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 3/32" | 80,000 | MS16995-11, NAS1352C04-8, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 5/8" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 3/32" | 80,000 | MS16995-12, NAS1352C04-10, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 3/32" | 80,000 | MS16995-13, NAS1352C04-12, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
6-32 | |||||||||||
| 1/4" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 80,000 | MS16995-16, NAS1352C06-4, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 3/8" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 80,000 | MS16995-17, NAS1352C06-6, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 1/2" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 80,000 | MS16995-18, NAS1352C06-8, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 5/8" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 80,000 | MS16995-19, NAS1352C06-10, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 80,000 | MS16995-20, NAS1352C06-12, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 80,000 | MS16995-21, NAS1352C06-16, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
8-32 | |||||||||||
| 3/8" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 80,000 | MS16995-25, NAS1352C08-6, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 1/2" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 80,000 | MS16995-26, NAS1352C08-8, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 5/8" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 80,000 | MS16995-27, NAS1352C08-10, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 80,000 | MS16995-28, NAS1352C08-12, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 7/8" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 80,000 | MS16995-29, NAS1352C08-14, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 80,000 | MS16995-30, NAS1352C08-16, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
10-24 | |||||||||||
| 3/8" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 5/32" | 80,000 | MS16995-35, NAS1352C3-6, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 1/2" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 5/32" | 80,000 | MS16995-36, NAS1352C3-8, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 5/8" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 5/32" | 80,000 | MS16995-37, NAS1352C3-10, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 5/32" | 80,000 | MS16995-38, NAS1352C3-12, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 7/8" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 5/32" | 80,000 | MS16995-39, NAS1352C3-14, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 5/32" | 80,000 | MS16995-40, NAS1352C3-16, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 1 1/4" | Partially Threaded | 7/8" | Coarse | 5/16" | 0.19" | 5/32" | 80,000 | MS16995-41, NAS1352C3-20, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
| 1 1/2" | Partially Threaded | 1 1/8" | Coarse | 5/16" | 0.19" | 5/32" | 80,000 | MS16995-42, NAS1352C3-24, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
1/4"-20 | |||||||||||
| 3/8" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 80,000 | MS16995-47, NAS1352C4-6, NASM16995, Fed. Spec. FF-S-86 | 5 | 000000000 | 0000 |
| 1/2" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 80,000 | MS16995-48, NAS1352C4-8, NASM16995, Fed. Spec. FF-S-86 | 5 | 000000000 | 0000 |
| 5/8" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 80,000 | MS16995-49, NAS1352C4-10, NASM16995, Fed. Spec. FF-S-86 | 5 | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 80,000 | MS16995-50, NAS1352C4-12, NASM16995, Fed. Spec. FF-S-86 | 5 | 000000000 | 0000 |
| 7/8" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 80,000 | MS16995-51, NAS1352C4-14, NASM16995, Fed. Spec. FF-S-86 | 5 | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 80,000 | MS16995-52, NAS1352C4-16, NASM16995, Fed. Spec. FF-S-86 | 5 | 000000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 80,000 | MS16995-53, NAS1352C4-20, NASM16995, Fed. Spec. FF-S-86 | 5 | 000000000 | 0000 |
| 1 1/2" | Partially Threaded | 1" | Coarse | 3/8" | 1/4" | 3/16" | 80,000 | MS16995-54, NAS1352C4-24, NASM16995, Fed. Spec. FF-S-86 | 5 | 000000000 | 00000 |
| 1 3/4" | Partially Threaded | 1 1/4" | Coarse | 3/8" | 1/4" | 3/16" | 80,000 | MS16995-55, NAS1352C4-28, NASM16995, Fed. Spec. FF-S-86 | 5 | 000000000 | 00000 |
| 2" | Partially Threaded | 1" | Coarse | 3/8" | 1/4" | 3/16" | 80,000 | MS16995-56, NAS1352C4-32, NASM16995, Fed. Spec. FF-S-86 | 5 | 000000000 | 00000 |
5/16"-18 | |||||||||||
| 3/8" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 80,000 | MS16995-61, NAS1352C5-6, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 0000 |
| 1/2" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 80,000 | MS16995-62, NAS1352C5-8, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 0000 |
| 5/8" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 80,000 | MS16995-63, NAS1352C5-10, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 80,000 | MS16995-64, NAS1352C5-12, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 0000 |
| 7/8" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 80,000 | MS16995-65, NAS1352C5-14, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 80,000 | MS16995-66, NAS1352C5-16, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 80,000 | MS16995-67, NAS1352C5-20, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 80,000 | MS16995-68, NAS1352C5-24, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 0000 |
| 1 3/4" | Partially Threaded | 1 1/8" | Coarse | 15/32" | 5/16" | 1/4" | 80,000 | MS16995-69, NAS1352C5-28, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 0000 |
| 2" | Partially Threaded | 1 3/8" | Coarse | 15/32" | 5/16" | 1/4" | 80,000 | MS16995-70, NAS1352C5-32, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 00000 |
| 2 1/4" | Partially Threaded | 1 1/8" | Coarse | 15/32" | 5/16" | 1/4" | 80,000 | MS16995-71, NAS1352C5-36, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 00000 |
| 2 1/2" | Partially Threaded | 1 3/8" | Coarse | 15/32" | 5/16" | 1/4" | 80,000 | MS16995-72, NAS1352C5-40, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 00000 |
3/8"-16 | |||||||||||
| 1/2" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 5/16" | 80,000 | MS16995-77, NAS1352C6-8, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 0000 |
| 5/8" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 5/16" | 80,000 | MS16995-78, NAS1352C6-10, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 5/16" | 80,000 | MS16995-79, NAS1352C6-12, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 0000 |
| 7/8" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 5/16" | 80,000 | MS16995-80, NAS1352C6-14, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 5/16" | 80,000 | MS16995-81, NAS1352C6-16, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 5/16" | 80,000 | MS16995-82, NAS1352C6-20, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 5/16" | 80,000 | MS16995-83, NAS1352C6-24, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 00000 |
| 1 3/4" | Partially Threaded | 1 1/4" | Coarse | 9/16" | 3/8" | 5/16" | 80,000 | MS16995-84, NAS1352C6-28, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 00000 |
| 2" | Partially Threaded | 1 1/2" | Coarse | 9/16" | 3/8" | 5/16" | 80,000 | MS16995-85, NAS1352C6-32, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 00000 |
| 2 1/4" | Partially Threaded | 1 1/4" | Coarse | 9/16" | 3/8" | 5/16" | 80,000 | MS16995-86, NAS1352C6-36, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 00000 |
| 2 1/2" | Partially Threaded | 1 1/2" | Coarse | 9/16" | 3/8" | 5/16" | 80,000 | MS16995-87, NAS1352C6-40, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 00000 |
1/2"-13 | |||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 3/4" | 1/2" | 3/8" | 80,000 | MS16995-92, NAS1352C8-12, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 00000 |
| 1" | Fully Threaded | __ | Coarse | 3/4" | 1/2" | 3/8" | 80,000 | MS16995-94, NAS1352C8-16, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 00000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 3/4" | 1/2" | 3/8" | 80,000 | MS16995-95, NAS1352C8-20, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 00000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 3/4" | 1/2" | 3/8" | 80,000 | MS16995-96, NAS1352C8-24, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 00000 |
| 2" | Fully Threaded | __ | Coarse | 3/4" | 1/2" | 3/8" | 80,000 | MS16995-98, NAS1352C8-32, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 00000 |
| 2 1/2" | Partially Threaded | 1 3/4" | Coarse | 3/4" | 1/2" | 3/8" | 80,000 | MS16995-100, NAS1352C8-40, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 00000 |
| 3" | Partially Threaded | 1 1/2" | Coarse | 3/4" | 1/2" | 3/8" | 80,000 | MS16995-102, NAS1352C8-48, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 00000 |