The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-347-5243, 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 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-347-5243 |
| Primary Part Number | 400-5489320 REV ITEM 23 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Fastener Length | 2.250 INCHES NOMINAL IN |
| Thread Length | 2.096 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Locking Feature | PATCH OR PELLET OR STRIP THREADS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 13 |
| 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 |
|---|---|
| 400-5489320 REV ITEM 23 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 400 5489320 REV | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 5305-01-347-5243 is a Screw,cap,hexagon Head, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-347-5243 has 1 manufacturer part number on file: 400-5489320 REV ITEM 23 (Naval Sea Systems Command).
Key specifications for 400-5489320 REV ITEM 23: Fastener Length: 2.250 INCHES NOMINAL IN; Thread Length: 2.096 INCHES NOMINAL IN; Material Document and Classification: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Nominal Thread Diameter: 0.500 INCHES IN. 11 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.