The Bolt,machine, cataloged under National Stock Number 5306-01-280-5660, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems. Government technical data includes 20 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-280-5660 |
| Primary Part Number | 163B5899 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems |
| Status | ACTIVE |
| Head Height | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Fastener Length | 1.470 INCHES MINIMUM AND 1.530 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-STD-171 1.1.2.2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 1.280 INCHES MINIMUM AND 1.370 INCHES MAXIMUM IN |
| Hardness Rating | 28.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM OVERALL |
| Hole Configuration Style | HEXAGON PERPENDICULAR |
| Material Document and Classification | ASTM A304 ASSN STD SINGLE MATERIAL RESPONSE OR MIL-S-5626 COND F MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 1.000 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 2.375 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 12 |
| Material | STEEL COMP 4140 OVERALL |
| Hole Quantity | 1 |
| Thread Series Designator | UN |
| Hole Type | DRILLED |
| Hole Diameter | 0.126 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 |
|---|---|
| 163B5899 PRIMARY | General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems (USA) |
NSN 5306-01-280-5660 is a Bolt,machine, manufactured by General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-280-5660 has 1 manufacturer part number on file: 163B5899 (General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems).
Key specifications for 163B5899: Head Height: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN; Fastener Length: 1.470 INCHES MINIMUM AND 1.530 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-STD-171 1.1.2.2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 1.280 INCHES MINIMUM AND 1.370 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.