The Setscrew, cataloged under National Stock Number 5305-00-075-2412, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-075-2412 |
| Primary Part Number | 54A50A66 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Width Across Flats | 0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN |
| Fastener Length | 0.313 INCHES NOMINAL IN |
| Thread Length | 0.313 INCHES MINIMUM IN |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Point Style | CUP |
| Internal Drive Style | HEXAGON |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | NICKEL ALLOY OVERALL |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 54A50A66 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 20762 | 5/2 Secondary reference U.S. Government activity |
NSN 5305-00-075-2412 is a Setscrew, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-075-2412 has 1 manufacturer part number on file: 54A50A66 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
6 possible matches (shared part number, not a government interchangeability claim): 5340-00-209-9361, 4720-00-497-1872, 5910-00-725-4761. Verify interchangeability with system specifications before substitution.
Key specifications for 54A50A66: Width Across Flats: 0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN; Fastener Length: 0.313 INCHES NOMINAL IN; Thread Length: 0.313 INCHES MINIMUM IN; Nominal Thread Diameter: 0.164 INCHES IN. 12 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.