The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-609-8782, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-609-8782 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Point Diameter | 0.4880 INCHES MINIMUM AND 0.4930 INCHES MAXIMUM IN |
| Head Height | 0.250 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN |
| Fastener Length | 3.263 INCHES MINIMUM AND 3.293 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS-QQ-P-416,TY II,CL 2 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.528 INCHES NOMINAL IN |
| Material Document and Classification | AMS6349 OR AMS6382 NATIONAL STD/SPEC 1ST MATERIAL RESPONSE OR AMS6415 OR AMS6484 NATIONAL STD/SPEC 2ND MATERIAL RESPONSE OR AMS6322 NATIONAL STD/SPEC 3RD MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Grip Length | 2.74 INCHES MINIMUM AND 2.76 INCHES MAXIMUM IN |
| Width Between Flats | 0.745 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN |
| Grip Diameter | 0.4985 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 4140 OR STEEL COMP 4340 OR STEEL COMP 8740 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| NAS6208-44W | 5/1 Secondary reference U.S. Government activity |
| NAS6208-44 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-609-8782 is a Bolt,close Tolerance, classified under FSC 5306, Bolts. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5306-01-611-6122. Verify interchangeability with system specifications before substitution.
Key specifications for 5306-01-609-8782: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Point Diameter: 0.4880 INCHES MINIMUM AND 0.4930 INCHES MAXIMUM IN; Head Height: 0.250 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN. 21 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.