The Screw,externally Relieved Body, cataloged under National Stock Number 5305-00-253-8253, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-253-8253 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.105 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN |
| Fastener Length | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.183 INCHES MINIMUM AND 0.223 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.136 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 0.287 INCHES MINIMUM AND 0.307 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | WATERTIGHT |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.133 INCHES MINIMUM AND 0.139 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.334 INCHES MINIMUM AND 0.354 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 |
|---|---|
| 3111-14-8 | 3/2 Design control — primary reference U.S. Government activity |
| 0N047561 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5305-00-253-8253 is a Screw,externally Relieved Body, classified under FSC 5305, Screws. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5998-00-403-9235. Verify interchangeability with system specifications before substitution.
Key specifications for 5305-00-253-8253: Head Height: 0.105 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN; Fastener Length: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.183 INCHES MINIMUM AND 0.223 INCHES MAXIMUM IN. 20 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.