The Bolt,machine, cataloged under National Stock Number 5306-00-468-0635, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 18 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-468-0635 |
| Primary Part Number | 670544 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Head Height | 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN |
| Fastener Length | 1.615 INCHES MINIMUM AND 1.635 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS 2416 ASSN STD ALL TREATMENT RESPONSES OVERALL |
| Thread Length | 0.595 INCHES MINIMUM AND 0.675 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.065 INCHES MINIMUM AND 0.072 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS 6304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.960 INCHES MINIMUM AND 1.020 INCHES MAXIMUM IN |
| Width Between Flats | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Surface Treatment | NICKEL AND CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 601 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.505 INCHES MINIMUM AND 1.525 INCHES MAXIMUM 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 |
|---|---|
| 670544 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 670544 | 5/2 Secondary reference U.S. Government activity |
| 670544 | 5/9 Secondary reference Valco Co Government Sales Office |
| 670544 | 5/2 Secondary reference U.S. Government activity |
| 670544 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
NSN 5306-00-468-0635 is a Bolt,machine, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-468-0635 has 1 manufacturer part number on file: 670544 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
1 possible match (shared part number, not a government interchangeability claim): 5935-00-506-6734. Verify interchangeability with system specifications before substitution.
Key specifications for 670544: Head Height: 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN; Fastener Length: 1.615 INCHES MINIMUM AND 1.635 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS 2416 ASSN STD ALL TREATMENT RESPONSES OVERALL; Thread Length: 0.595 INCHES MINIMUM AND 0.675 INCHES MAXIMUM IN. 18 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.