The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-666-9970, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-666-9970 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN |
| Fastener Length | 1.120 INCHES MINIMUM AND 1.150 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS2700 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.323 INCHES NOMINAL IN |
| Material Document and Classification | AMS5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5853 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.1900 INCHES IN |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN |
| Grip Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | CROSS RECESS TYPE II |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.357 INCHES MINIMUM AND 0.373 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 |
|---|---|
| NAS7803U13 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-666-9970 is a Bolt,close Tolerance, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-666-9970: Head Height: 0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN; Fastener Length: 1.120 INCHES MINIMUM AND 1.150 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS2700 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.323 INCHES NOMINAL IN. 17 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.