The Bolt,shear, cataloged under National Stock Number 5306-01-073-9173, 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 22 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-073-9173 |
| Primary Part Number | MS21297-06009 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Extended Washer Thickness | 0.046 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN |
| Head Height | 0.263 INCHES MINIMUM AND 0.303 INCHES MAXIMUM IN |
| Fastener Length | 1.221 INCHES MINIMUM AND 1.251 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-8837,TY 2 CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.691 INCHES MINIMUM AND 0.701 INCHES MAXIMUM IN |
| Thread Length | 0.649 INCHES MINIMUM AND 0.699 INCHES MAXIMUM IN |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | SPLINE EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN |
| Head Minor Diameter | 0.448 INCHES MINIMUM AND 0.455 INCHES MAXIMUM IN |
| Grip Diameter | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 220000 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 |
|---|---|
| MS21297-06009 | Huck International, Inc (USA) |
| MS21297-06009 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| VFK101G6-009 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| MS21297-06009 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| MS21297-06009 | 5/9 Secondary reference U.S. Government activity |
| MS21297-06009 | 5/9 Secondary reference U.S. Government activity |
| MS21297-06009 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-073-9173 is a Bolt,shear, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-073-9173 has 4 manufacturer part numbers on file: MS21297-06009 (Huck International, Inc), MS21297-06009 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), VFK101G6-009 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), MS21297-06009 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners).
Key specifications for MS21297-06009: Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Extended Washer Thickness: 0.046 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN; Head Height: 0.263 INCHES MINIMUM AND 0.303 INCHES MAXIMUM IN. 22 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.