The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-661-7705, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-661-7705 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Width Across Flats | 0.1406 INCHES MINIMUM AND 0.1426 INCHES MAXIMUM IN |
| Head Height | 0.164 INCHES NOMINAL IN |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | ASTM A967,NITRIC 1(F-16,MTHD 11) ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.13 INCHES MINIMUM AND 0.14 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM A 484 OR ASTM A 582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | FLAT FILLISTER |
| Thread Direction | RIGHT-HAND |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 303 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.270 INCHES NOMINAL 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 |
|---|---|
| 6631794-1 | 3/2 Design control — primary reference U.S. Government activity |
| 6631794 | D/9 Drawing number reference only U.S. Government activity |
NSN 5305-01-661-7705 is a Screw,externally Relieved Body, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-661-7705: Width Across Flats: 0.1406 INCHES MINIMUM AND 0.1426 INCHES MAXIMUM IN; Head Height: 0.164 INCHES NOMINAL IN; Fastener Length: 0.500 INCHES NOMINAL IN; Surface Treatment Document and Classification: ASTM A967,NITRIC 1(F-16,MTHD 11) ASSN STD SINGLE TREATMENT RESPONSE OVERALL. 17 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.