The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-157-7156, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-157-7156 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| Fastener Length | 0.535 INCHES MINIMUM AND 0.555 INCHES MAXIMUM IN |
| Thread Length | 0.225 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN |
| First Diameter From Head | 0.084 INCHES MINIMUM AND 0.089 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | PAN NO. 2 |
| Thread Direction | RIGHT-HAND |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.310 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.255 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN |
| 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 |
|---|---|
| MS3498-4 | 5/9 Secondary reference U.S. Government activity |
| MS3498-4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-157-7156 is a Screw,externally Relieved Body, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-157-7156: Head Height: 0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN; Fastener Length: 0.535 INCHES MINIMUM AND 0.555 INCHES MAXIMUM IN; Thread Length: 0.225 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN; First Diameter From Head: 0.084 INCHES MINIMUM AND 0.089 INCHES MAXIMUM IN. 14 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.