The Bolt,shear, cataloged under National Stock Number 5306-00-487-4777, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 20 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-487-4777 |
| Primary Part Number | C306-6-21 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Extended Washer Thickness | 0.075 INCHES NOMINAL IN |
| Head Height | 0.405 INCHES NOMINAL IN |
| Fastener Length | 2.005 INCHES MINIMUM AND 2.035 INCHES MAXIMUM IN |
| Extended Washer Diameter | 0.715 INCHES MINIMUM AND 0.725 INCHES MAXIMUM IN |
| Thread Length | 0.682 INCHES MINIMUM AND 0.732 INCHES MAXIMUM IN |
| Hardness Rating | 51.0 ROCKWELL C MINIMUM AND 54.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS 6485 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 56878-EWB26 MANUFACTURERS STANDARD |
| Grip Length | 1.303 INCHES MINIMUM AND 1.323 INCHES MAXIMUM IN |
| Width Between Flats | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Grip Diameter | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 260000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP H11 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| C306-6-21 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| C305-6-21 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| AIC260E6-21 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| C305-6-21 | 7/2 Vendor item drawing reference U.S. Government activity |
| VS2005-6-21 | 5/9 Secondary reference U.S. Government activity |
| HE111-0034-0621 | 5/9 Secondary reference U.S. Government activity |
| C306-6-21 | 3/2 Design control — primary reference U.S. Government activity |
| EWB26-6-21 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| BM5526-6-21 | 5/9 Secondary reference U.S. Government activity |
| EWB26-6-21 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-487-4777 is a Bolt,shear, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-487-4777 has 3 manufacturer part numbers on file: C306-6-21 (Sps Technologies, Llc Dba PB Fasteners), C305-6-21 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), AIC260E6-21 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company).
Key specifications for C306-6-21: Extended Washer Thickness: 0.075 INCHES NOMINAL IN; Head Height: 0.405 INCHES NOMINAL IN; Fastener Length: 2.005 INCHES MINIMUM AND 2.035 INCHES MAXIMUM IN; Extended Washer Diameter: 0.715 INCHES MINIMUM AND 0.725 INCHES MAXIMUM IN. 20 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.