The Setscrew, cataloged under National Stock Number 5305-01-045-5300, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Clayton Manufacturing Company. Government technical data includes 8 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. 3 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 | 5305-01-045-5300 |
| Primary Part Number | 16647 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Clayton Manufacturing Company |
| Status | ACTIVE |
| Fastener Length | 2.000 INCHES MINIMUM IN |
| Thread Length | 2.000 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Point Style | CUP |
| Internal Drive Style | SQUARE |
| Thread Quantity Per Inch | 13 |
| 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 |
|---|---|
| 16647 PRIMARY | Clayton Manufacturing Company (USA) |
NSN 5305-01-045-5300 is a Setscrew, manufactured by Clayton Manufacturing Company, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-045-5300 has 1 manufacturer part number on file: 16647 (Clayton Manufacturing Company).
3 possible matches (shared part number, not a government interchangeability claim): 5305-01-185-4632, 5140-01-345-8184, 5331-01-414-1651. Verify interchangeability with system specifications before substitution.
Key specifications for 16647: Fastener Length: 2.000 INCHES MINIMUM IN; Thread Length: 2.000 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.500 INCHES IN; Head Style: HEADLESS (SETSCREW). 8 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.