The Bolt,machine, cataloged under National Stock Number 5306-01-565-2580, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-565-2580 |
| Primary Part Number | 91257A559 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| 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 |
|---|---|
| 91257A559 PRIMARY | Mcmaster-Carr Supply Co (USA) |
| Reference | Meaning |
|---|---|
| 91247A853 | 5/9 Secondary reference United States Department of the Navy Dba Naval Surface Warfare Center Panama City |
| 91257A559 | 5/9 Secondary reference United States Department of the Navy Dba Naval Surface Warfare Center Panama City |
NSN 5306-01-565-2580 is a Bolt,machine, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-565-2580 has 1 manufacturer part number on file: 91257A559 (Mcmaster-Carr Supply Co).
1 possible match (shared part number, not a government interchangeability claim): 5305-01-611-3825. Verify interchangeability with system specifications before substitution.
Key specifications for 91257A559: Head Style: HEXAGON; Thread Direction: RIGHT-HAND; Part Name Assigned by Controlling Agency: BOLT,HEX; End Item Identification: 2590-01-553-6517;MINE ROLLER SYSTEM,PC GEN II. 2 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.