The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-390-5000, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Pilatus Aircraft Ltd. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-390-5000 |
| Primary Part Number | 9321960475 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Pilatus Aircraft Ltd |
| Status | ACTIVE |
| Head Height | 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN |
| Fastener Length | 0.978 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN |
| Thread Length | 0.516 INCHES MINIMUM AND 0.548 INCHES MAXIMUM IN |
| Hole Configuration Style | HEXAGON FLATS |
| Nominal Thread Diameter | 0.3125 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.546 INCHES MINIMUM AND 0.548 INCHES MAXIMUM IN |
| Width Between Flats | 0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Grip Diameter | 0.3112 INCHES MINIMUM AND 0.3117 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hole Quantity | 1 |
| Thread Series Designator | UNF |
| Hole Type | DRILLED |
| Hole Diameter | 0.060 INCHES MINIMUM AND 0.070 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 |
| Part Number | Manufacturer |
|---|---|
| 9321960475 | Pilatus Aircraft Ltd (CHE) |
| Reference | Meaning |
|---|---|
| AN175CH10A | 2/2 Government specification standardization U.S. Government activity |
NSN 5306-01-390-5000 is a Bolt,close Tolerance, manufactured by Pilatus Aircraft Ltd, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-390-5000 has 1 manufacturer part number on file: 9321960475 (Pilatus Aircraft Ltd).
Key specifications for 9321960475: Head Height: 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN; Fastener Length: 0.978 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN; Thread Length: 0.516 INCHES MINIMUM AND 0.548 INCHES MAXIMUM IN; Hole Configuration Style: HEXAGON FLATS. 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.