The Bolt,shoulder, cataloged under National Stock Number 5306-00-207-2978, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is General Electric Company. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-207-2978 |
| Primary Part Number | 6661924 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Head Height | 0.188 INCHES NOMINAL IN |
| Fastener Length | 1.812 INCHES NOMINAL IN |
| Shoulder Length | 0.625 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Length | 0.375 INCHES NOMINAL SECOND SHOULDER IN |
| Shoulder Diameter | 0.561 INCHES NOMINAL SECOND SHOULDER IN |
| Shoulder Diameter | 0.609 INCHES NOMINAL FIRST SHOULDER IN |
| Thread Length | 0.812 INCHES MINIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | 46S18 GR 3A NAVY ASSN STD SINGLE MATERIAL RESPONSE OVERALL A |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | ROUND W/WRENCH FLATS CHAMFERED |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.875 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 13 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 1.000 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 |
|---|---|
| 6661924 PRIMARY | General Electric Company (USA) |
NSN 5306-00-207-2978 is a Bolt,shoulder, manufactured by General Electric Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-207-2978 has 1 manufacturer part number on file: 6661924 (General Electric Company).
Key specifications for 6661924: Head Height: 0.188 INCHES NOMINAL IN; Fastener Length: 1.812 INCHES NOMINAL IN; Shoulder Length: 0.625 INCHES NOMINAL FIRST SHOULDER IN; Shoulder Length: 0.375 INCHES NOMINAL SECOND SHOULDER 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.