The Bolt,shear, cataloged under National Stock Number 5306-01-054-3405, 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 Div PB Fasteners. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-054-3405 |
| Primary Part Number | PBF7521-4D5 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| Status | ACTIVE |
| Head Height | 0.164 INCHES NOMINAL IN |
| Fastener Length | 0.672 INCHES MINIMUM AND 0.692 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | NAS 672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.370 INCHES NOMINAL IN |
| Shank Unthreaded Hole Diameter | 0.036 INCHES NOMINAL FIRST HOLE IN |
| Material Document and Classification | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Single Shear Strength | ERR-060 |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | SPLINE DRIVE SHEAR HEAD |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Width Between Flats | 0.531 INCHES NOMINAL IN |
| Grip Diameter | 0.2483 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 0.521 INCHES MINIMUM AND 0.541 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 |
|---|---|
| PBF7521-4D5 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| AIC596-4D5 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| C7521-4D5 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| C7521-4D5 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| C7521-4D5 | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| 120978-4D5 | 5/2 Secondary reference U.S. Government activity |
| C7521-4D5 | 7/2 Vendor item drawing reference U.S. Government activity |
| VS3133-4D5 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-054-3405 is a Bolt,shear, manufactured by Sps Technologies Llc Dba PB Fasteners Div PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-054-3405 has 5 manufacturer part numbers on file: PBF7521-4D5 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), AIC596-4D5 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), C7521-4D5 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), C7521-4D5 (Sps Technologies, Llc Dba PB Fasteners), C7521-4D5 (Huck International, Inc).
Key specifications for PBF7521-4D5: Head Height: 0.164 INCHES NOMINAL IN; Fastener Length: 0.672 INCHES MINIMUM AND 0.692 INCHES MAXIMUM IN; Surface Treatment Document and Classification: NAS 672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.370 INCHES NOMINAL 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.