The Bolt,shear, cataloged under National Stock Number 5306-01-085-3227, 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. Government technical data includes 21 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-085-3227 |
| Primary Part Number | MS21250-04034 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| 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 | 2.627 INCHES MINIMUM AND 2.647 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Thread Length | 0.492 INCHES MINIMUM AND 0.532 INCHES MAXIMUM IN |
| Hardness Rating | 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.115 INCHES MINIMUM AND 2.135 INCHES MAXIMUM IN |
| Width Between Flats | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 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 | 28 |
| Material | STEEL COMP 4140 OR STEEL COMP E4340 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 |
|---|---|
| MS21250-04034 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| MS21250-04034 | Howmet Global Fastening Systems Inc (USA) |
| MS21250-04034 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| MS21250-04034 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| MS21250-04034 | Huck International, Inc (USA) |
| MS21250-04034 | All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners (USA) |
| Reference | Meaning |
|---|---|
| MS21250-04034 | 5/9 Secondary reference U.S. Government activity |
| MS21250-04034 | 5/2 Secondary reference U.S. Government activity |
| MS21250-04034 | 5/9 Secondary reference Mercury Aerospace Fasteners Inc |
| MS21250-04034 | 3/2 Design control — primary reference U.S. Government activity |
| MS21250-04034 | 5/2 Secondary reference U.S. Government activity |
| MS21250-04034 | 5/9 Secondary reference Chandler Craftsman Controls |
| MS21250-04034 | 5/2 Secondary reference U.S. Government activity |
| MS21250-04034 | 5/9 Secondary reference Allen Mfg Co Sub of Chicago Pneumatic Tool Co |
NSN 5306-01-085-3227 is a Bolt,shear, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-085-3227 has 6 manufacturer part numbers on file: MS21250-04034 (Sps Technologies, Llc Dba PB Fasteners), MS21250-04034 (Howmet Global Fastening Systems Inc), MS21250-04034 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), MS21250-04034 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), MS21250-04034 (Huck International, Inc) and 1 more.
Key specifications for MS21250-04034: Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; 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. 21 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.