The Bolt,shear, cataloged under National Stock Number 5306-01-623-4718, 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 17 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-623-4718 |
| Primary Part Number | MB84-9-30 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Extended Washer Thickness | 0.133 INCHES NOMINAL IN |
| Head Height | 0.557 INCHES NOMINAL IN |
| Fastener Length | 1.026 INCHES NOMINAL IN |
| Extended Washer Diameter | 0.933 INCHES NOMINAL IN |
| Thread Length | 0.849 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.5625 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.875 INCHES NOMINAL IN |
| Width Between Flats | 0.610 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Grip Diameter | 0.5610 INCHES MINIMUM AND 0.5615 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 220 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| ST3M571-9-30 | The Boeing Company Div Defense (USA) |
| MB84-9-30 PRIMARY | Hi-Shear Corporation (USA) |
NSN 5306-01-623-4718 is a Bolt,shear, manufactured by Hi-Shear Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-623-4718 has 2 manufacturer part numbers on file: ST3M571-9-30 (The Boeing Company Div Defense), MB84-9-30 (Hi-Shear Corporation).
Key specifications for MB84-9-30: Extended Washer Thickness: 0.133 INCHES NOMINAL IN; Head Height: 0.557 INCHES NOMINAL IN; Fastener Length: 1.026 INCHES NOMINAL IN; Extended Washer Diameter: 0.933 INCHES NOMINAL IN. 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.