The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-447-3326, 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 17 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-447-3326 |
| Primary Part Number | 595-6401267 ITEM 126 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Head Height | 0.348 INCHES MINIMUM AND 0.371 INCHES MAXIMUM IN |
| Fastener Length | 2.750 INCHES NOMINAL IN |
| Thread Length | 1.375 INCHES NOMINAL IN |
| Hardness Rating | 24.0 ROCKWELL C MINIMUM OVERALL |
| Material Document and Classification | QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE FASTENER |
| Nominal Thread Diameter | 0.562 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.798 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN |
| Locking Feature | PATCH OR PELLET OR STRIP THREADS |
| Minimum Tensile Strength | 130000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 90000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 12 |
| Material | PLASTIC POLYAMIDE NYLON LOCKING FEATURE |
| Material | NICKEL ALLOY K-500 FASTENER |
| 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 |
|---|---|
| 211068663 | Naval Sea Systems Command (USA) |
| 595-6401267 ITEM 126 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5305-01-447-3326 is a Screw,cap,hexagon Head, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-447-3326 has 2 manufacturer part numbers on file: 211068663 (Naval Sea Systems Command), 595-6401267 ITEM 126 (Naval Sea Systems Command).
Key specifications for 595-6401267 ITEM 126: Head Height: 0.348 INCHES MINIMUM AND 0.371 INCHES MAXIMUM IN; Fastener Length: 2.750 INCHES NOMINAL IN; Thread Length: 1.375 INCHES NOMINAL IN; Hardness Rating: 24.0 ROCKWELL C MINIMUM OVERALL. 17 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.