The Bolt,internal Wrenching, cataloged under National Stock Number 5306-00-558-3174, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is L3harris Technologies, Inc Div Space & Airborne Systems. Government technical data includes 16 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. 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 | 5306-00-558-3174 |
| Primary Part Number | 77065 |
| Item Name | Bolt,internal Wrenching |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | L3harris Technologies, Inc Div Space & Airborne Systems |
| Status | ACTIVE |
| Width Across Flats | 0.221 INCHES MAXIMUM IN |
| Head Height | 0.312 INCHES NOMINAL IN |
| Fastener Length | 1.125 INCHES NOMINAL IN |
| Thread Length | 0.250 INCHES NOMINAL IN |
| First Diameter From Head | 0.187 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.437 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.437 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 |
|---|---|
| 77065 PRIMARY | L3harris Technologies, Inc Div Space & Airborne Systems (USA) |
NSN 5306-00-558-3174 is a Bolt,internal Wrenching, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-558-3174 has 1 manufacturer part number on file: 77065 (L3harris Technologies, Inc Div Space & Airborne Systems).
1 possible match (shared part number, not a government interchangeability claim): 3040-00-920-7821. Verify interchangeability with system specifications before substitution.
Key specifications for 77065: Width Across Flats: 0.221 INCHES MAXIMUM IN; Head Height: 0.312 INCHES NOMINAL IN; Fastener Length: 1.125 INCHES NOMINAL IN; Thread Length: 0.250 INCHES NOMINAL IN. 16 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.