The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-650-1061, 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18 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-650-1061 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES OVERALL |
| Extended Washer Thickness | 0.168 INCHES NOMINAL IN |
| Head Height | 0.330 INCHES NOMINAL IN |
| Fastener Length | 2.125 INCHES NOMINAL IN |
| Extended Washer Diameter | 0.438 INCHES NOMINAL IN |
| Thread Length | 0.544 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.500 INCHES NOMINAL IN |
| Width Between Flats | 0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| Grip Diameter | 0.2494 INCHES MINIMUM AND 0.2499 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Reference Number Differentiating Characteristics | ITEM IS FAA CERTIFIED |
| 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 |
|---|---|
| MS9111-22 | 3/1 Design control — primary reference Sae International Dba Sae International |
| MS9111-22 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5306-01-650-1061 is a Bolt,close Tolerance, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-650-1061: Surface Finish: 125.0 MICROINCHES OVERALL; Extended Washer Thickness: 0.168 INCHES NOMINAL IN; Head Height: 0.330 INCHES NOMINAL IN; Fastener Length: 2.125 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.