The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-706-0424, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-706-0424 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN |
| Fastener Length | 1.943 INCHES MINIMUM AND 1.983 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 TYPE II OR VIII ASSN STD ALL TREATMENT RESPONSES OVERALL |
| Thread Length | 0.507 INCHES MINIMUM AND 0.524 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.76 INCHES MINIMUM AND 0.77 INCHES MAXIMUM OVERALL IN |
| Material Document and Classification | AMS5731 AEROSPACE MATERIAL SPEC STD ALL MATERIAL RESPONSES OR AMS5737 AEROSPACE MATERIAL SPEC STD ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.2500 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS1160 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 1.510 INCHES MINIMUM AND 1.520 INCHES MAXIMUM IN |
| Width Between Flats | 0.429 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Grip Diameter | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.775 INCHES NOMINAL OVERALL 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 |
|---|---|
| NAS1160-4-24D | 3/2 Design control — primary reference U.S. Government activity |
| NAS1160 REV 3 | D/9 Drawing number reference only U.S. Government activity |
NSN 5306-01-706-0424 is a Bolt,close Tolerance, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-706-0424: Head Height: 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN; Fastener Length: 1.943 INCHES MINIMUM AND 1.983 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 TYPE II OR VIII ASSN STD ALL TREATMENT RESPONSES OVERALL; Thread Length: 0.507 INCHES MINIMUM AND 0.524 INCHES MAXIMUM IN. 19 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.