The Bolt,shear, cataloged under National Stock Number 5306-01-178-9307, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-178-9307 |
| Primary Part Number | BM28630-4 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Extended Washer Thickness | 0.082 INCHES NOMINAL IN |
| Head Height | 0.348 INCHES NOMINAL IN |
| Fastener Length | 0.580 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.526 INCHES NOMINAL IN |
| Thread Length | 0.330 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DOUBLE HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.250 INCHES NOMINAL IN |
| Width Between Flats | 0.368 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN |
| Grip Diameter | 0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Locking Feature | PATCH THREADS |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 8740 OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| BM28630-4 PRIMARY | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| BM28630-4 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-178-9307 is a Bolt,shear, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-178-9307 has 1 manufacturer part number on file: BM28630-4 (Huck International, Inc).
Key specifications for BM28630-4: Extended Washer Thickness: 0.082 INCHES NOMINAL IN; Head Height: 0.348 INCHES NOMINAL IN; Fastener Length: 0.580 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.