The Bolt,shoulder, cataloged under National Stock Number 5306-01-131-8451, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 14 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-131-8451 |
| Primary Part Number | 65219-07025-102 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Head Height | 0.370 INCHES NOMINAL IN |
| Fastener Length | 3.400 INCHES NOMINAL IN |
| Thread Length | 0.445 INCHES NOMINAL IN |
| Hardness Rating | 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | MIL-S-5000,4340 COND C MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | ROUND W/WRENCH FLATS CHAMFERED |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.500 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 2.000 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 |
|---|---|
| 65219-07025-102 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| 65219-07025-102 | Apex Manufacturing Company, Inc. Dba Apex Manufacturing Co (USA) |
| Reference | Meaning |
|---|---|
| 65219-07025-102 | 5/9 Secondary reference Seanair, Llc |
| 65219-07025-102 | 5/2 Secondary reference U.S. Government activity |
| 65219-07025-102 | 5/9 Secondary reference Specialty Tool Company Usa, Llc Dba Specialty Tool Co |
| 65219-07025-102 | 5/9 Secondary reference Tek Precision Co Limited |
| 65219-07025-102 | 5/2 Secondary reference U.S. Government activity |
| 65219-07025-102 | 5/9 Secondary reference Cambridge Specialty Co. Inc. Dba Cambridge Specialty Co Inc |
NSN 5306-01-131-8451 is a Bolt,shoulder, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-131-8451 has 2 manufacturer part numbers on file: 65219-07025-102 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 65219-07025-102 (Apex Manufacturing Company, Inc. Dba Apex Manufacturing Co).
Key specifications for 65219-07025-102: Head Height: 0.370 INCHES NOMINAL IN; Fastener Length: 3.400 INCHES NOMINAL IN; Thread Length: 0.445 INCHES NOMINAL IN; Hardness Rating: 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL. 14 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.