The Bolt,shoulder, cataloged under National Stock Number 5306-01-044-2969, 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 15 specifications, cited from the U.S. Government catalog. The record lists 8 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-044-2969 |
| Primary Part Number | MB88-5-23 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Head Height | 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN |
| Fastener Length | 1.889 INCHES MINIMUM AND 1.936 INCHES MAXIMUM IN |
| Shoulder Length | 1.428 INCHES MINIMUM AND 1.448 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.327 INCHES MINIMUM AND 0.328 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.441 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 76301-ST3-497 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Width Between Flats | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL 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 |
|---|---|
| MA5497-5-23 | Abounding Security Inc Div of Maa Corp (USA) |
| MB88-5-23 PRIMARY | Hi-Shear Corporation (USA) |
| 11915-5-23 | Reid Products Inc. Dba Reid Products Inc (USA) |
| PBF1254-5-23 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| HP5497-5-23 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| MB88-5-23 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| S11-1061-5-23 PRIMARY | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| VAL23607-5-23 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| VS3037-5-23 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| 109450-5-23 | 3/2 Design control — primary reference U.S. Government activity |
| 109453-5-23X | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| VS3037-5-23 | 5/9 Secondary reference U.S. Government activity |
| ST3M497-5-23 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| BM17019-5-23X | 5/9 Secondary reference U.S. Government activity |
| 109453-5-23X | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-044-2969 is a Bolt,shoulder, manufactured by Hi-Shear Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-044-2969 has 8 manufacturer part numbers on file: MA5497-5-23 (Abounding Security Inc Div of Maa Corp), MB88-5-23 (Hi-Shear Corporation), 11915-5-23 (Reid Products Inc. Dba Reid Products Inc), PBF1254-5-23 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), HP5497-5-23 (Heartland Precision Fasteners Inc) and 3 more.
Key specifications for MB88-5-23: Head Height: 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN; Fastener Length: 1.889 INCHES MINIMUM AND 1.936 INCHES MAXIMUM IN; Shoulder Length: 1.428 INCHES MINIMUM AND 1.448 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.327 INCHES MINIMUM AND 0.328 INCHES MAXIMUM FIRST SHOULDER IN. 15 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.