The Bolt,shoulder, cataloged under National Stock Number 5306-01-050-8178, 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 20 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 | 5306-01-050-8178 |
| Primary Part Number | 78347 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | L3harris Technologies, Inc Div Space & Airborne Systems |
| Status | ACTIVE |
| Fastener Length | 0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN |
| Shoulder Length | 0.400 INCHES MINIMUM AND 0.410 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | GPS10-030,OPERATION T21B,FSCM 91729 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.220 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hole Configuration Style | HEXAGON FLATS |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 416 OVERALL |
| Hole Quantity | 6 |
| Thread Series Designator | UNF |
| Hole Type | DRILLED |
| Hole Diameter | 0.070 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 |
|---|---|
| 78347 PRIMARY | L3harris Technologies, Inc Div Space & Airborne Systems (USA) |
NSN 5306-01-050-8178 is a Bolt,shoulder, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-050-8178 has 1 manufacturer part number on file: 78347 (L3harris Technologies, Inc Div Space & Airborne Systems).
1 possible match (shared part number, not a government interchangeability claim): 6680-01-278-2376. Verify interchangeability with system specifications before substitution.
Key specifications for 78347: Fastener Length: 0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN; Shoulder Length: 0.400 INCHES MINIMUM AND 0.410 INCHES MAXIMUM FIRST SHOULDER IN; Surface Treatment Document and Classification: GPS10-030,OPERATION T21B,FSCM 91729 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Shoulder Diameter: 0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM FIRST SHOULDER 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.