The Setscrew, cataloged under National Stock Number 5305-01-480-2091, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Setscrew |
| FSC / FSG | 5305 — Screws (FSG 53) |
| Manufacturers | Naval Sea Systems Command (CAGE 53711) |
| Parameter | Value |
|---|---|
| NSN | 5305-01-480-2091 |
| Primary Part Number | 845-6655309 ITEM 2-4 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| 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 |
|---|---|
| 845-6655309 ITEM 3-4 | Naval Sea Systems Command (USA) |
| 845-6655309 ITEM 2-4 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 2640-682-09 ITEM 2-4 | 3/2 Design control — primary reference U.S. Government activity |
| 0.250-20UNC-3AX0.750LG NICU | 5/1 Secondary reference U.S. Government activity |
| 556-7015842-30 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 2640-682-09 ITEM 3-4 | 5/2 Secondary reference U.S. Government activity |
| 845-6655309 ITE | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 6655309 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5305-01-480-2091 is a Setscrew, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-480-2091 has 2 manufacturer part numbers on file: 845-6655309 ITEM 3-4 (Naval Sea Systems Command), 845-6655309 ITEM 2-4 (Naval Sea Systems Command).
4 possible matches (shared part number, not a government interchangeability claim): 5305-01-480-2200, 5355-01-481-6965, 5305-01-492-9188. Verify interchangeability with system specifications before substitution.
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.