The Bolt,machine, cataloged under National Stock Number 5306-01-445-4921, is classified within Federal Supply Class 5306 (Bolts) 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 | 5306-01-445-4921 |
| Primary Part Number | 754-6407500 ITEM 74 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Head Height | 0.378 INCHES MINIMUM AND 0.444 INCHES MAXIMUM IN |
| Fastener Length | 1.750 INCHES NOMINAL IN |
| Thread Length | 1.500 INCHES MINIMUM IN |
| Hardness Rating | 24.0 ROCKWELL C MINIMUM FASTENER |
| Material Document and Classification | QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE FASTENER |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.906 INCHES MINIMUM AND 0.938 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 | 2A A |
| Thread Quantity Per Inch | 11 |
| 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 |
|---|---|
| 211067228 | Naval Sea Systems Command (USA) |
| 754-6407500 ITEM 74 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5306-01-445-4921 is a Bolt,machine, manufactured by Naval Sea Systems Command, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-445-4921 has 2 manufacturer part numbers on file: 211067228 (Naval Sea Systems Command), 754-6407500 ITEM 74 (Naval Sea Systems Command).
Key specifications for 754-6407500 ITEM 74: Head Height: 0.378 INCHES MINIMUM AND 0.444 INCHES MAXIMUM IN; Fastener Length: 1.750 INCHES NOMINAL IN; Thread Length: 1.500 INCHES MINIMUM IN; Hardness Rating: 24.0 ROCKWELL C MINIMUM FASTENER. 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.