The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-520-8992, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-520-8992 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Extended Washer Thickness | 0.123 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Head Height | 0.470 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN |
| Fastener Length | 1.953 INCHES MINIMUM AND 1.983 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35, CLASS200FC12 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.928 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN |
| Thread Length | 0.910 INCHES NOMINAL IN |
| Hole Configuration Style | DOUBLE HEXAGON LONGITUDINAL HOLE |
| Material Document and Classification | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.562 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.865 INCHES MINIMUM AND 1.988 INCHES MAXIMUM IN |
| Width Between Flats | 0.616 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN |
| Grip Diameter | 0.5615 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 200000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | IRON ALLOY 660 OVERALL |
| Hole Quantity | 4 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM 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 |
|---|---|
| BACB30LE9U30 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-520-8992 is a Bolt,close Tolerance, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-520-8992: Extended Washer Thickness: 0.123 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Head Height: 0.470 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN; Fastener Length: 1.953 INCHES MINIMUM AND 1.983 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35, CLASS200FC12 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 23 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.