The Bolt,machine, cataloged under National Stock Number 5306-01-561-2251, 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 8 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-561-2251 |
| Primary Part Number | 302-5486639 ITEM 167 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Fastener Length | 0.375 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Thread Class | 2B |
| Thread Quantity Per Inch | 32 |
| Material | NICKEL ALLOY 400 OR NICKEL ALLOY R-405 OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 302-5486639 ITEM 167 PRIMARY | Naval Sea Systems Command (USA) |
| 302-5343932 ITEM 167 PRIMARY | Naval Sea Systems Command (USA) |
| 10-32UNF-2BX0.375 NICU | Naval Sea Systems Command (USA) |
NSN 5306-01-561-2251 is a Bolt,machine, manufactured by Naval Sea Systems Command, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-561-2251 has 3 manufacturer part numbers on file: 302-5486639 ITEM 167 (Naval Sea Systems Command), 302-5343932 ITEM 167 (Naval Sea Systems Command), 10-32UNF-2BX0.375 NICU (Naval Sea Systems Command).
Key specifications for 302-5486639 ITEM 167: Fastener Length: 0.375 INCHES NOMINAL IN; Nominal Thread Diameter: 0.190 INCHES IN; Head Style: HEXAGON; Thread Direction: RIGHT-HAND. 8 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.