The Setscrew, cataloged under National Stock Number 5305-01-497-9955, 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16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-497-9955 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Spline Minor Diameter | 0.037 INCHES MINIMUM AND 0.038 INCHES MAXIMUM IN |
| Point Diameter | 0.039 INCHES MINIMUM AND 0.047 INCHES MAXIMUM IN |
| Fastener Length | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Spline Width | 0.016 INCHES MINIMUM AND 0.017 INCHES MAXIMUM IN |
| Thread Length | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-7720 MIL SPEC ALL MATERIAL RESPONSES OVERALL |
| Spline Major Diameter | 0.049 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.086 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | SIX SPLINE |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 56 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| AN565AC2L4 | 2/2 Government specification standardization U.S. Government activity |
NSN 5305-01-497-9955 is a Setscrew, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-497-9955: Spline Minor Diameter: 0.037 INCHES MINIMUM AND 0.038 INCHES MAXIMUM IN; Point Diameter: 0.039 INCHES MINIMUM AND 0.047 INCHES MAXIMUM IN; Fastener Length: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN; Spline Width: 0.016 INCHES MINIMUM AND 0.017 INCHES MAXIMUM 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.