The Bolt,shear, cataloged under National Stock Number 5306-01-138-7729, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 11 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-138-7729 |
| Primary Part Number | ST3M753-4-12 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Extended Washer Thickness | 0.026 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN |
| Head Height | 0.194 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN |
| Fastener Length | 1.203 INCHES MINIMUM AND 1.233 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.460 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN |
| Thread Length | 0.390 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | SPLINE EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN |
| Head Minor Diameter | 0.318 INCHES MINIMUM AND 0.324 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 |
| 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 |
|---|---|
| MB156-4-12 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| VFK600-4-12 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M753-4-12 PRIMARY | The Boeing Company Div Defense (USA) |
| AIC763-4-12 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| VS3190-4-12 PRIMARY | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| PBF1267-4-12 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M753-4-12 | Huck International, Inc (USA) |
| ST3M753-4-12 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| MB156-4-12 | Hi-Shear Corporation (USA) |
| GS1032-4-12 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| ST3M753-4-12 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| ST3M753-4-12 | 5/9 Secondary reference Pruitt Energy Sources Inc |
| VS3190-4-12 | 5/9 Secondary reference U.S. Government activity |
| 10115966 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 122897-4-12 | 5/2 Secondary reference U.S. Government activity |
| S343-4-12 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-138-7729 is a Bolt,shear, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-138-7729 has 11 manufacturer part numbers on file: MB156-4-12 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), VFK600-4-12 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), ST3M753-4-12 (The Boeing Company Div Defense), AIC763-4-12 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), VS3190-4-12 (Howmet Global Fastening Systems Inc Div City of Industry Operations) and 6 more.
Key specifications for ST3M753-4-12: Extended Washer Thickness: 0.026 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN; Head Height: 0.194 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN; Fastener Length: 1.203 INCHES MINIMUM AND 1.233 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 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.