The Setscrew, cataloged under National Stock Number 5305-00-253-4867, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-253-4867 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Width Across Flats | 0.050 INCHES MINIMUM AND 0.051 INCHES MAXIMUM IN |
| Fastener Length | 0.188 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 3 FED SPEC 1ST TREATMENT RESPONSE AND QQ-P-416 TY 2 CL 3 FED SPEC 2ND TREATMENT RESPONSE OR QQ-Z-325 TY 2 CL 3 FED SPEC 3RD TREATMENT RESPONSE OVERALL |
| Thread Length | 0.188 INCHES NOMINAL IN |
| Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Point Style | CUP |
| Nondefinitive Spec/std Data | 3 TYPE AND 4 STYLE |
| Surface Treatment | CADMIUM AND CHROMATE OR ZINC OR CHROMATE OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 48 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 328-5008-00 | 5/9 Secondary reference Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| 328-5008-00 | 5/1 Secondary reference U.S. Government activity |
| 328-5008-000 | 5/9 Secondary reference Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| MS51018-18 | 2/2 Government specification standardization U.S. Government activity |
| 328-5008-000 | 5/1 Secondary reference U.S. Government activity |
NSN 5305-00-253-4867 is a Setscrew, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-00-253-4867: Width Across Flats: 0.050 INCHES MINIMUM AND 0.051 INCHES MAXIMUM IN; Fastener Length: 0.188 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416 TY 2 CL 3 FED SPEC 1ST TREATMENT RESPONSE AND QQ-P-416 TY 2 CL 3 FED SPEC 2ND TREATMENT RESPONSE OR QQ-Z-325 TY 2 CL 3 FED SPEC 3RD TREATMENT RESPONSE OVERALL; Thread Length: 0.188 INCHES NOMINAL IN. 16 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.