The Bolt,shear, cataloged under National Stock Number 5306-01-367-4128, 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 23 specifications, cited from the U.S. Government catalog. The record lists 21 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-367-4128 |
| Primary Part Number | BM3326-4H10 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Extended Washer Thickness | 0.059 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN |
| Head Height | 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN |
| Fastener Length | 1.078 INCHES MINIMUM AND 1.108 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Thread Length | 0.443 INCHES MINIMUM AND 0.493 INCHES MAXIMUM IN |
| Hole Configuration Style | DOUBLE HEXAGON LONGITUDINAL HOLE |
| Material Document and Classification | 23-112 TY A MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN |
| Width Between Flats | 0.303 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN |
| Grip Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP XM-13 OVERALL |
| Hole Quantity | 1 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.150 INCHES MINIMUM AND 0.190 INCHES MAXIMUM 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 |
|---|---|
| 74328-4H10 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M571-4H10 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M571-4H10 | J M Precision Inc (USA) |
| ST3M571-4H10 | Heartland Precision Fasteners Inc (USA) |
| ST3M571-4H10 | Hi-Shear Corporation (USA) |
| MB84-4H10 | Hi-Shear Corporation (USA) |
| S371-4H10 | Huck International, Inc (USA) |
| VS3060-4H10 | Howmet Global Fastening Systems Inc (USA) |
| VAL23033-4H10 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M571-4H10 | Howmet Global Fastening Systems Inc (USA) |
| BM3326-4H10 PRIMARY | Huck International, Inc (USA) |
| ST3M571-4H10 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M571-4H10 | Huck International, Inc (USA) |
| ST3M571-4H10 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M571-4H10 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M571-4H10 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| MB84-4H10 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| AIC752-4H10 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| S11-1059-4H10 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| ST3M571-4H10 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| S371-4H10 | 5/9 Secondary reference U.S. Government activity |
| VS3060-4H10 | 5/9 Secondary reference U.S. Government activity |
| ST3M571-4H10 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| BM3326-4H10 | 5/9 Secondary reference U.S. Government activity |
| ST3M571-4H10 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5306-01-367-4128 is a Bolt,shear, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-367-4128 has 21 manufacturer part numbers on file: 74328-4H10 (Sps Technologies, Llc Dba PB Fasteners), ST3M571-4H10 (Sps Technologies, Llc Dba PB Fasteners), ST3M571-4H10 (J M Precision Inc), ST3M571-4H10 (Heartland Precision Fasteners Inc), ST3M571-4H10 (Hi-Shear Corporation) and 16 more.
Key specifications for BM3326-4H10: Extended Washer Thickness: 0.059 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN; Head Height: 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN; Fastener Length: 1.078 INCHES MINIMUM AND 1.108 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED 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.