The Bolt,machine, cataloged under National Stock Number 5306-01-175-7535, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Triumph Aerospace Operations Uk, Ltd. Div Staverton Site. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-175-7535 |
| Primary Part Number | RA 55931 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Triumph Aerospace Operations Uk, Ltd. Div Staverton Site |
| Status | ACTIVE |
| Head Height | 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN |
| Fastener Length | 1.200 INCHES NOMINAL IN |
| Thread Length | 0.500 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.339 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL 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 |
|---|---|
| RA 55931 | Triumph Aerospace Operations Uk, Ltd. Div Staverton Site (GBR) |
| Reference | Meaning |
|---|---|
| RA 55931 | 5/9 Secondary reference Safran Landing Systems Uk Ltd Div Safran Landing Systems Uk |
| RA 55931 | 3/9 Design control — primary reference Ge Aviation Systems Llc Dba Ge Aviation |
NSN 5306-01-175-7535 is a Bolt,machine, manufactured by Triumph Aerospace Operations Uk, Ltd. Div Staverton Site, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-175-7535 has 1 manufacturer part number on file: RA 55931 (Triumph Aerospace Operations Uk, Ltd. Div Staverton Site).
Key specifications for RA 55931: Head Height: 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN; Fastener Length: 1.200 INCHES NOMINAL IN; Thread Length: 0.500 INCHES NOMINAL IN; Nominal Thread Diameter: 0.190 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.