The Bolt,shear, cataloged under National Stock Number 5306-01-648-2579, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-648-2579 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.063 INCHES NOMINAL IN |
| Fastener Length | 0.638 INCHES MINIMUM AND 0.668 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS-QQ-416 TYPE II CLASS2 INTERNATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.403 INCHES NOMINAL IN |
| Material Document and Classification | AMS5731,AMS5732,AMS5737;AMS5853 INTERNATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.25 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.0403 INCHES NOMINAL IN |
| Grip Diameter | 0.25 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 3700 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.3988 INCHES NOMINAL IN |
| 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 |
|---|---|
| NAS1581 | 5/9 Secondary reference U.S. Government activity |
| NAS1581C4H4P | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-648-2579 is a Bolt,shear, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-648-2579: Head Height: 0.063 INCHES NOMINAL IN; Fastener Length: 0.638 INCHES MINIMUM AND 0.668 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS-QQ-416 TYPE II CLASS2 INTERNATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.403 INCHES NOMINAL IN. 16 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.