The Bolt,shear, cataloged under National Stock Number 5306-00-904-4149, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Fairchild Fasteners Europe - Vsd Gmbh. Government technical data includes 19 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through both NSN and commercial part number lookups. 14 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-904-4149 |
| Primary Part Number | MS21250-10018 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Fairchild Fasteners Europe - Vsd Gmbh |
| Status | ACTIVE |
| Extended Washer Thickness | 0.150 INCHES NOMINAL IN |
| Head Height | 0.618 INCHES NOMINAL IN |
| Fastener Length | 2.044 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Extended Washer Diameter | 1.040 INCHES MINIMUM AND 1.050 INCHES MAXIMUM IN |
| Thread Length | 0.899 INCHES MINIMUM IN |
| Hardness Rating | 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.125 INCHES NOMINAL IN |
| Width Between Flats | 0.679 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN |
| Grip Diameter | 0.6230 INCHES MINIMUM AND 0.6240 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 | 18 |
| Material | STEEL COMP 8740 OR STEEL COMP E4340 OR STEEL COMP 4340 OR STEEL COMP 6150 OR STEEL COMP 4140 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 |
|---|---|
| MS21250-10018 | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| Reference | Meaning |
|---|---|
| MS21250-10018 | 5/1 Secondary reference Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| MS21250-10018 | 5/1 Secondary reference Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| MS21250-10018 | 5/1 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| MS21250-10018 | 5/1 Secondary reference U.S. Government activity |
| MS21250-10018 | 5/9 Secondary reference U.S. Government activity |
| MS21250-10018 | 5/1 Secondary reference All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners |
| MS21250-10018 | 5/9 Secondary reference U.S. Government activity |
| MS21250-10018 | 5/9 Secondary reference Mercury Aerospace Fasteners Inc |
| VFK100G-10018 | 5/1 Secondary reference Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| MS21250-10018 | 5/1 Secondary reference Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| MS21250-10018 | 2/2 Government specification standardization U.S. Government activity |
| MS21250-10018 | 5/1 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| MS21250-10018 | 5/1 Secondary reference Hi-Shear Corporation |
| MS21250-10018 | 5/1 Secondary reference Howmet Global Fastening Systems Inc |
NSN 5306-00-904-4149 is a Bolt,shear, manufactured by Fairchild Fasteners Europe - Vsd Gmbh, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-904-4149 has 1 manufacturer part number on file: MS21250-10018 (Fairchild Fasteners Europe - Vsd Gmbh).
Key specifications for MS21250-10018: Extended Washer Thickness: 0.150 INCHES NOMINAL IN; Head Height: 0.618 INCHES NOMINAL IN; Fastener Length: 2.044 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416 TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES 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.