The Bolt,machine, cataloged under National Stock Number 5306-01-481-3443, 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 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-481-3443 |
| Primary Part Number | 123-1678724 PC 31 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Thread Length | 1.062 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 11 |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| 5/8-11UNC-2AX1-1/16 STL,GALV | Naval Sea Systems Command (USA) |
| 123-1678724 PC 31 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 123-1678724 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5306-01-481-3443 is a Bolt,machine, manufactured by Naval Sea Systems Command, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-481-3443 has 2 manufacturer part numbers on file: 5/8-11UNC-2AX1-1/16 STL,GALV (Naval Sea Systems Command), 123-1678724 PC 31 (Naval Sea Systems Command).
2 possible matches (shared part number, not a government interchangeability claim): 5305-01-481-3625, 5315-01-481-7277. Verify interchangeability with system specifications before substitution.
Key specifications for 123-1678724 PC 31: Thread Length: 1.062 INCHES NOMINAL IN; Nominal Thread Diameter: 0.625 INCHES IN; Thread Direction: RIGHT-HAND; Special Features: USED ON VSWT DOORS FOR ELEVATOR TRUNK, FR. 90-PORT SIDE. 7 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.