The Bolt,machine, cataloged under National Stock Number 5306-01-239-1259, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5306-01-239-1259 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Thread Class | 2A A |
| 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 |
| Reference | Meaning |
|---|---|
| M1222RN10C2128NANN | 2/2 Government specification standardization U.S. Government activity |
| MILB857 0.625-11UNC-2A | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| MILB857 8.000 L0NG | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| MIL-B-857 TY-111 NICU | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 9760152 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| QQ-N-281 CL A | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5306-01-239-1259 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5305-01-239-3502. Verify interchangeability with system specifications before substitution.
Key specifications for 5306-01-239-1259: Thread Class: 2A A; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC). 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.