The Bolt,shear, cataloged under National Stock Number 5306-01-195-5032, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 13 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-195-5032 |
| Primary Part Number | MB156-7H25 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Extended Washer Thickness | 0.053 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN |
| Head Height | 0.310 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN |
| Fastener Length | 2.252 INCHES MINIMUM AND 2.282 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.807 INCHES MINIMUM AND 0.817 INCHES MAXIMUM IN |
| Thread Length | 0.680 INCHES MINIMUM AND 0.730 INCHES MAXIMUM IN |
| Hole Configuration Style | SPLINE |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.437 INCHES IN |
| Head Style | SPLINE EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.552 INCHES MINIMUM AND 1.572 INCHES MAXIMUM IN |
| Head Minor Diameter | 0.514 INCHES MINIMUM AND 0.521 INCHES MAXIMUM IN |
| Grip Diameter | 0.4365 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP XM-13 OVERALL |
| Hole Quantity | 4 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| 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 |
|---|---|
| MB156-7H25 PRIMARY | Hi-Shear Corporation (USA) |
| AIC763-7H25 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M753-7H25 PRIMARY | The Boeing Company Div Defense (USA) |
| HP7753-7H25 | Heartland Precision Fasteners Inc (USA) |
| 122897-7H25 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| VS3190-7H25 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M753-7H25 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| SLB255-7H25 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| PBF1267-7H25 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| VFK600-7H25 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| MB156-7H25 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M753-7H25 | Houston Precision Fasteners I Lp (USA) |
| GS1032-7H25 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| Reference | Meaning |
|---|---|
| S343-7H25 | 5/9 Secondary reference U.S. Government activity |
| S343-7H25 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| ST3M753-7H25 | 5/2 Secondary reference U.S. Government activity |
| VS3190-7H25 | 5/9 Secondary reference U.S. Government activity |
| 122897-7H25 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-195-5032 is a Bolt,shear, manufactured by Hi-Shear Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-195-5032 has 13 manufacturer part numbers on file: MB156-7H25 (Hi-Shear Corporation), AIC763-7H25 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), ST3M753-7H25 (The Boeing Company Div Defense), HP7753-7H25 (Heartland Precision Fasteners Inc), 122897-7H25 (Sps Technologies, Llc Dba PB Fasteners) and 8 more.
Key specifications for MB156-7H25: Extended Washer Thickness: 0.053 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Head Height: 0.310 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN; Fastener Length: 2.252 INCHES MINIMUM AND 2.282 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 23 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.