The Setscrew, cataloged under National Stock Number 5305-01-249-7634, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-249-7634 |
| Primary Part Number | 711-5588877 ITEM #17 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Width Across Flats | 0.078 INCHES NOMINAL IN |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-281,CL B FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Point Style | OVAL |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | NICKEL ALLOY R-405 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 |
|---|---|
| 2270-222 ITEM #17 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 711-5588877 ITEM #17 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 711-5588877 ITE | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 5305-01-249-7634 is a Setscrew, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-249-7634 has 2 manufacturer part numbers on file: 2270-222 ITEM #17 (Huntington Ingalls Inc Div Newport News Shipbuilding), 711-5588877 ITEM #17 (Naval Sea Systems Command).
Key specifications for 711-5588877 ITEM #17: Width Across Flats: 0.078 INCHES NOMINAL IN; Fastener Length: 0.500 INCHES NOMINAL IN; Material Document and Classification: QQ-N-281,CL B FED SPEC SINGLE MATERIAL RESPONSE OVERALL; 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.