The Bolt,machine, cataloged under National Stock Number 5306-00-978-6914, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Precision Speed Manufacturing, Llc. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-978-6914 |
| Primary Part Number | 478172 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Precision Speed Manufacturing, Llc |
| Status | ACTIVE |
| Head Height | 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN |
| Fastener Length | 0.938 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.863 INCHES MINIMUM IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Hole Configuration Style | HEXAGON LONGITUDINAL HOLE |
| Material Document and Classification | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 8740 OVERALL |
| Hole Quantity | 6 |
| Thread Series Designator | UNF |
| Hole Type | DRILLED |
| Hole Diameter | 0.062 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 |
NSN 5306-00-978-6914 is a Bolt,machine, manufactured by Precision Speed Manufacturing, Llc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-978-6914 has 2 manufacturer part numbers on file: 478172 (Precision Speed Manufacturing, Llc), 478172 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
2 possible matches (shared part number, not a government interchangeability claim): 5935-01-070-0075, 5961-01-175-8455. Verify interchangeability with system specifications before substitution.
Key specifications for 478172: Head Height: 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN; Fastener Length: 0.938 INCHES NOMINAL IN; Surface Treatment Document and Classification: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.863 INCHES MINIMUM 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.