The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-644-9302, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-644-9302 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.055 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN |
| Fastener Length | 0.677 INCHES MINIMUM AND 0.697 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | BMS10-85, TYPE 1, CLASS A (HI-KOTE 1, INCOTEC 8G, OR KAL-GARD 2242 ONLY). MFR REF SINGLE TREATMENT RESPONSE OVERALL G |
| Thread Length | 0.312 INCHES NOMINAL IN |
| Material Document and Classification | AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.1640 INCHES IN |
| Features Provided | CETYL ALCOHOL LUBRICANT |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN |
| Grip Diameter | 0.1621 INCHES MINIMUM AND 0.1635 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | TITANIUM ALLOY OVERALL |
| Thread Series Designator | UNJC |
| Head Diameter | 0.306 INCHES MINIMUM AND 0.322 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 |
|---|---|
| BACB30NX5HK6 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-644-9302 is a Bolt,close Tolerance, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-644-9302: Head Height: 0.055 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN; Fastener Length: 0.677 INCHES MINIMUM AND 0.697 INCHES MAXIMUM IN; Surface Treatment Document and Classification: BMS10-85, TYPE 1, CLASS A (HI-KOTE 1, INCOTEC 8G, OR KAL-GARD 2242 ONLY). MFR REF SINGLE TREATMENT RESPONSE OVERALL G; Thread Length: 0.312 INCHES NOMINAL IN. 18 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.