The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-453-9544, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-453-9544 |
| Primary Part Number | 6393072-6 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Head Height | 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN |
| Fastener Length | 1.610 INCHES MINIMUM AND 1.630 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-85614 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.490 INCHES NOMINAL IN |
| Shank Unthreaded Hole Diameter | 0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.120 INCHES MINIMUM AND 1.140 INCHES MAXIMUM IN |
| Width Between Flats | 0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Grip Diameter | 0.497 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 13 |
| Material | NICKEL ALLOY 718 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.000 INCHES NOMINAL FIRST HOLE 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 |
|---|---|
| 6393072-06 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| 6393072-6 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| 5793302 FIND 49 | Naval Sea Systems Command (USA) |
| 5793302 FIND 49 | Bek, Inc. Dba Level 1 Fasteners (USA) |
| 6393072-6 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5306-01-453-9544 is a Bolt,close Tolerance, manufactured by Naval Sea Systems Command, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-453-9544 has 5 manufacturer part numbers on file: 6393072-06 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 6393072-6 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 5793302 FIND 49 (Naval Sea Systems Command), 5793302 FIND 49 (Bek, Inc. Dba Level 1 Fasteners), 6393072-6 (Naval Sea Systems Command).
Key specifications for 6393072-6: Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN; Fastener Length: 1.610 INCHES MINIMUM AND 1.630 INCHES MAXIMUM IN. 20 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.