The Bolt,u, cataloged under National Stock Number 5306-01-137-8931, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5306-01-137-8931 |
| Item Name | Bolt,u |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Inside Distance Between Shanks | 2.880 INCHES NOMINAL IN |
| Thread Length | 1.060 INCHES MINIMUM IN |
| Distance From Inside Center of Bend to Bolt End | 3.190 INCHES NOMINAL IN |
| Style Designator | ROUND BEND |
| Material Document and Classification | QQ-S-763 CD B FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.438 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 14 |
| Material | STEEL COMP 304 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 |
| Reference | Meaning |
|---|---|
| 34-26-7808 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 845-4687559 ITEM 13 | 3/2 Design control — primary reference U.S. Government activity |
| 211015951 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 1516-002-CJ01PC | C/1 Advisory reference — outside the item-of-supply concept Aluf Industries Inc |
| 593-7067141-40 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 5306-01-137-8931 is a Bolt,u, classified under FSC 5306, Bolts. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5307-01-156-9496. Verify interchangeability with system specifications before substitution.
Key specifications for 5306-01-137-8931: Inside Distance Between Shanks: 2.880 INCHES NOMINAL IN; Thread Length: 1.060 INCHES MINIMUM IN; Distance From Inside Center of Bend to Bolt End: 3.190 INCHES NOMINAL IN; Style Designator: ROUND BEND. 11 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.