The Bolt,shoulder, cataloged under National Stock Number 5306-01-142-7185, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 9 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-142-7185 |
| Primary Part Number | MB88-6-26 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Head Height | 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN |
| Fastener Length | 2.125 INCHES MINIMUM AND 2.172 INCHES MAXIMUM IN |
| Shoulder Length | 1.615 INCHES MINIMUM AND 1.635 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.3896 INCHES MINIMUM AND 0.3901 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.490 INCHES MINIMUM AND 0.557 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.564 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| 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 |
|---|---|
| MB88-6-26 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M497-6-26 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M497-6-26 PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M497-6-26 | J M Precision Inc (USA) |
| VAL23607-6-26 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| S11-1061-6-26 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| MB88-6-26 PRIMARY | Hi-Shear Corporation (USA) |
| PBF1254-6-26 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| HP5497-6-26 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| Reference | Meaning |
|---|---|
| VS3037-6-26 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| BM17019-6-26X | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| MA5497-6-26 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| 109450-6-26 | 3/2 Design control — primary reference U.S. Government activity |
| VS3037-6-26 | 5/9 Secondary reference U.S. Government activity |
| ST3M497-6-26 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| 109450-6-26 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| BM17019-6-26X | 5/9 Secondary reference U.S. Government activity |
| ST3M497-6-26 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-142-7185 is a Bolt,shoulder, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-142-7185 has 9 manufacturer part numbers on file: MB88-6-26 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M497-6-26 (Sps Technologies, Llc Dba PB Fasteners), ST3M497-6-26 (The Boeing Company Div Defense), ST3M497-6-26 (J M Precision Inc), VAL23607-6-26 (Valley-Todeco, Inc. Dba Arconic Fastening Systems) and 4 more.
Key specifications for MB88-6-26: Head Height: 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN; Fastener Length: 2.125 INCHES MINIMUM AND 2.172 INCHES MAXIMUM IN; Shoulder Length: 1.615 INCHES MINIMUM AND 1.635 INCHES MAXIMUM FIRST SHOULDER IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 17 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.