The Bolt,shoulder, cataloged under National Stock Number 5306-01-159-8907, 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 19 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-159-8907 |
| Primary Part Number | SS27576C4-19 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Fastener Length | 1.616 INCHES NOMINAL IN |
| Shoulder Diameter | 0.256 INCHES MINIMUM AND 0.294 INCHES MAXIMUM ALL SHOULDERS IN |
| Thread Length | 0.292 INCHES NOMINAL IN |
| Shoulder Shape | ROUND ALL SHOULDERS |
| Hole Configuration Style | ROUND LONGITUDINAL HOLE |
| Material Document and Classification | SS27576,FSCM 78286 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Head Length | 0.141 INCHES NOMINAL IN |
| Width Between Flats | 0.422 INCHES NOMINAL IN |
| Minimum Tensile Strength | 4680 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hole Quantity | 2 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.086 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 |
|---|---|
| SS27576C4-19 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| Reference | Meaning |
|---|---|
| SS27576C4-19 | 5/2 Secondary reference U.S. Government activity |
| SS27576C4-19 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-159-8907 is a Bolt,shoulder, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-159-8907 has 1 manufacturer part number on file: SS27576C4-19 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for SS27576C4-19: Fastener Length: 1.616 INCHES NOMINAL IN; Shoulder Diameter: 0.256 INCHES MINIMUM AND 0.294 INCHES MAXIMUM ALL SHOULDERS IN; Thread Length: 0.292 INCHES NOMINAL IN; Shoulder Shape: ROUND ALL SHOULDERS. 19 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.