The Bolt,shear, cataloged under National Stock Number 5306-01-017-2569, 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 19 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-017-2569 |
| Primary Part Number | MS21250-16042 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Extended Washer Thickness | 0.222 INCHES NOMINAL IN |
| Head Height | 0.923 INCHES NOMINAL IN |
| Fastener Length | 4.124 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 1.615 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN |
| Thread Length | 1.479 INCHES MINIMUM IN |
| Hardness Rating | 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 1.000 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.615 INCHES MINIMUM AND 2.635 INCHES MAXIMUM IN |
| Width Between Flats | 1.062 INCHES NOMINAL IN |
| Grip Diameter | 0.9980 INCHES MINIMUM AND 0.9990 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 12 |
| Material | STEEL COMP 4140 OR STEEL COMP 4340 OR STEEL COMP 8740 OR STEEL COMP 6150 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 |
|---|---|
| MS21250-16042 | Huck International, Inc (USA) |
| MS21250-16042 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| VFK10G-16042 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| MS21250-16042 | Howmet Global Fastening Systems Inc (USA) |
| MS21250-16042 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| MS21250-16042 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| MS21250-16042 | 5/9 Secondary reference U.S. Government activity |
| MS21250-16042 | 5/9 Secondary reference U.S. Government activity |
| MS21250-16042 | 5/9 Secondary reference U.S. Government activity |
| MS21250-16042 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5306-01-017-2569 is a Bolt,shear, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-017-2569 has 6 manufacturer part numbers on file: MS21250-16042 (Huck International, Inc), MS21250-16042 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), VFK10G-16042 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), MS21250-16042 (Howmet Global Fastening Systems Inc), MS21250-16042 (Sps Technologies, Llc Dba PB Fasteners) and 1 more.
Key specifications for MS21250-16042: Extended Washer Thickness: 0.222 INCHES NOMINAL IN; Head Height: 0.923 INCHES NOMINAL IN; Fastener Length: 4.124 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 19 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.