The Bolt,machine, cataloged under National Stock Number 5306-01-092-8133, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Rotair Aerospace Corp. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-092-8133 |
| Primary Part Number | 70351-08253-101 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Rotair Aerospace Corp |
| Status | ACTIVE |
| Head Height | 0.124 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN |
| Fastener Length | 0.165 INCHES NOMINAL IN |
| Thread Length | 0.115 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.165 INCHES NOMINAL IN |
| Width Between Flats | 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| Locking Feature | UNDERCUT GRIP |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 70351-08253-101 PRIMARY | Rotair Aerospace Corp (USA) |
| 70351-08253-101 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 5306-01-092-8133 is a Bolt,machine, manufactured by Rotair Aerospace Corp, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-092-8133 has 2 manufacturer part numbers on file: 70351-08253-101 (Rotair Aerospace Corp), 70351-08253-101 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for 70351-08253-101: Head Height: 0.124 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN; Fastener Length: 0.165 INCHES NOMINAL IN; Thread Length: 0.115 INCHES NOMINAL IN; Nominal Thread Diameter: 0.250 INCHES IN. 13 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.