The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-803-6402, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-803-6402 |
| Primary Part Number | 5817083-501 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Head Height | 0.250 INCHES NOMINAL IN |
| Fastener Length | 1.812 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.316 INCHES MINIMUM AND 0.336 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.104 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | KNURLED NO. 4 |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.376 INCHES MINIMUM AND 1.396 INCHES MAXIMUM IN |
| Grip Diameter | 0.5145 INCHES MINIMUM AND 0.5155 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 4140 OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.656 INCHES NOMINAL FIRST HOLE IN |
| Head Diameter | 0.312 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 5817083-501 | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 3817085-501 | 5/2 Secondary reference U.S. Government activity |
| 3817085-1 | 3/2 Design control — primary reference U.S. Government activity |
| 5817083-501 | 5/2 Secondary reference U.S. Government activity |
| 3817085-1 | 5/9 Secondary reference The Boeing Company |
NSN 5306-00-803-6402 is a Bolt,close Tolerance, manufactured by The Boeing Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-803-6402 has 1 manufacturer part number on file: 5817083-501 (The Boeing Company).
Key specifications for 5817083-501: Surface Finish: 32.0 MICROINCHES GRIP; Head Height: 0.250 INCHES NOMINAL IN; Fastener Length: 1.812 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.