The Bolt,shear, cataloged under National Stock Number 5306-01-177-5838, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-177-5838 |
| Primary Part Number | HS4142-08-26 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Extended Washer Thickness | 0.098 INCHES NOMINAL IN |
| Head Height | 0.530 INCHES NOMINAL IN |
| Fastener Length | 2.536 INCHES MINIMUM AND 2.566 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-8837,TYPE 1,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.940 INCHES MINIMUM AND 0.950 INCHES MAXIMUM IN |
| Thread Length | 0.926 INCHES NOMINAL IN |
| Hardness Rating | 51.0 ROCKWELL C MINIMUM AND 54.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.350 INCHES MINIMUM AND 0.390 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS6487E ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Single Shear Strength | ERR-060 |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.615 INCHES MINIMUM AND 1.635 INCHES MAXIMUM IN |
| Width Between Flats | 0.616 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN |
| Grip Diameter | 0.4985 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 260000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 0.470 INCHES MINIMUM AND 0.475 INCHES MAXIMUM 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 |
|---|---|
| PBF26T-8-26 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HS4142-08-26 PRIMARY | The Boeing Company (USA) |
| HS4142-08-26 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| R21T6B1-6-26 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| EWB26D-8-26 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| EWB26D-8-26 | 3/2 Design control — primary reference U.S. Government activity |
| HS4142-08-26 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 5306-01-177-5838 is a Bolt,shear, manufactured by The Boeing Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-177-5838 has 4 manufacturer part numbers on file: PBF26T-8-26 (Sps Technologies, Llc Dba PB Fasteners), HS4142-08-26 (The Boeing Company), HS4142-08-26 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), R21T6B1-6-26 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for HS4142-08-26: Extended Washer Thickness: 0.098 INCHES NOMINAL IN; Head Height: 0.530 INCHES NOMINAL IN; Fastener Length: 2.536 INCHES MINIMUM AND 2.566 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-8837,TYPE 1,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 23 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.