The Bolt,shear, cataloged under National Stock Number 5306-01-398-9476, 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 27 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-398-9476 |
| Primary Part Number | SS27576-3-16 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Head Height | 0.095 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN |
| Fastener Length | 1.372 INCHES MINIMUM AND 1.392 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE LOCKING FEATURE |
| Surface Treatment Document and Classification | AMS 2401-3 ASSN STD SINGLE TREATMENT RESPONSE AND QQ-P-416 TY 2 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| Thread Length | 0.277 INCHES NOMINAL IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 41.0 ROCKWELL C MAXIMUM FASTENER |
| Shank Unthreaded Hole Diameter | 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS 5643 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5644 ASSN STD 2ND MATERIAL RESPONSE OR QQ-S-763 FED SPEC 3RD MATERIAL RESPONSE LOCKING FEATURE |
| Material Document and Classification | MIL-S-8844 CL 1 MIL SPEC SINGLE MATERIAL RESPONSE FASTENER |
| Material Document and Classification | QQ-W-423 FED SPEC 1ST MATERIAL RESPONSE OR QQ-W-423 COND B FED SPEC 2ND MATERIAL RESPONSE OR AMS 5678 ASSN STD 3RD MATERIAL RESPONSE SPRING |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | CROWNED HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.000 INCHES MINIMUM AND 1.016 INCHES MAXIMUM IN |
| Width Between Flats | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Grip Diameter | 0.1885 INCHES MINIMUM AND 0.1894 INCHES MAXIMUM IN |
| Locking Feature | RETAINER GRIP |
| Surface Treatment | CADMIUM AND CHROMATE FASTENER |
| Surface Treatment | PASSIVATE LOCKING FEATURE |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 4340 FASTENER |
| Material | STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 631 SPRING |
| Material | STEEL COMP 630 OR STEEL COMP 631 OR STEEL COMP 440C LOCKING FEATURE |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.294 INCHES NOMINAL FIRST HOLE 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 |
|---|---|
| SS27576-3-16 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| SS27576-3-16 | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| SS27576-3-16 | Fastener Technology Corp (USA) |
| Reference | Meaning |
|---|---|
| SS27576-3-16 | 5/2 Secondary reference U.S. Government activity |
| SS27576-3-16 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-398-9476 is a Bolt,shear, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-398-9476 has 3 manufacturer part numbers on file: SS27576-3-16 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), SS27576-3-16 (Howmet Global Fastening Systems Inc. Div Tridair Products), SS27576-3-16 (Fastener Technology Corp).
Key specifications for SS27576-3-16: Head Height: 0.095 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN; Fastener Length: 1.372 INCHES MINIMUM AND 1.392 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE LOCKING FEATURE; Surface Treatment Document and Classification: AMS 2401-3 ASSN STD SINGLE TREATMENT RESPONSE AND QQ-P-416 TY 2 FED SPEC SINGLE TREATMENT RESPONSE FASTENER. 27 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.