The Stud,recessed, cataloged under National Stock Number 5307-01-028-8531, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-028-8531 |
| Item Name | Stud,recessed |
| FSC / FSG | 5307 / 53 — Studs |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES NUT THD |
| Surface Finish | 63.0 MICROINCHES STUD THD |
| Surface Finish | 125.0 MICROINCHES SHANK |
| Surface Finish | 125.0 MICROINCHES BODY |
| Thread Length | 0.410 INCHES MINIMUM AND 0.440 INCHES MAXIMUM STUD THREAD IN |
| Hardness Rating | 38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM |
| Style Designator | RECESSED |
| Diameter of Recessed Portion of Shank | 0.167 INCHES MINIMUM AND 0.173 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.190 INCHES NUT THREAD IN |
| Nominal Thread Size | 0.190 INCHES STUD THREAD IN |
| Length of Recessed Portion of Shank | 0.137 INCHES MINIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 32 NUT THREAD |
| Thread Quantity Per Inch | 24 STUD THREAD |
| Thread Series Designator | UNF NUT THREAD |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) STUD 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 |
|---|---|
| 299C626P15 | 3/2 Design control — primary reference U.S. Government activity |
| 299C626P15 | 5/9 Secondary reference U.S. Government activity |
| 299C626P8 | 5/9 Secondary reference U.S. Government activity |
NSN 5307-01-028-8531 is a Stud,recessed, classified under FSC 5307, Studs. Status: active.
Key specifications for 5307-01-028-8531: Surface Finish: 63.0 MICROINCHES NUT THD; Surface Finish: 63.0 MICROINCHES STUD THD; Surface Finish: 125.0 MICROINCHES SHANK; Surface Finish: 125.0 MICROINCHES BODY. 19 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.