The Stud,welding, cataloged under National Stock Number 5307-01-278-9668, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-278-9668 |
| Item Name | Stud,welding |
| FSC / FSG | 5307 / 53 — Studs |
| Status | ACTIVE |
| Thread Length | 0.907 INCHES MINIMUM AND 1.031 INCHES MAXIMUM NUT THREAD IN |
| Style Designator | WELDING |
| Unthreaded End Diameter | 0.443 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN |
| Length Excluding Fluxed Welding Tip | 1.469 INCHES MINIMUM AND 1.531 INCHES MAXIMUM IN |
| Unthreaded End Length | 0.500 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.500 INCHES NUT THREAD IN |
| Nondefinitive Spec/std Data | 5 TYPE AND 1 CLASS |
| Thread Class | 2A NUT THREAD A |
| Thread Quantity Per Inch | 13 NUT THREAD |
| Material | STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 309 OR STEEL COMP 310 OR STEEL COMP 316 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) NUT THREAD |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| M24149/3-71 | 5/9 Secondary reference U.S. Government activity |
| MIL-S-24149/3-71 | 4/1 Identification reference U.S. Government activity |
| 5363433 PART 46 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| NASM24149 | 5/9 Secondary reference U.S. Government activity |
| 5363433 PC 46 | 5/1 Secondary reference Naval Sea Systems Command |
| M24149/3-71 | 2/2 Government specification standardization U.S. Government activity |
NSN 5307-01-278-9668 is a Stud,welding, classified under FSC 5307, Studs. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 5307-01-280-8716, 5307-01-281-3886, 5307-01-283-9262. Verify interchangeability with system specifications before substitution.
Key specifications for 5307-01-278-9668: Thread Length: 0.907 INCHES MINIMUM AND 1.031 INCHES MAXIMUM NUT THREAD IN; Style Designator: WELDING; Unthreaded End Diameter: 0.443 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN; Length Excluding Fluxed Welding Tip: 1.469 INCHES MINIMUM AND 1.531 INCHES MAXIMUM IN. 12 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.