The Bolt,machine, cataloged under National Stock Number 5306-01-605-3397, 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 18 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-605-3397 |
| Primary Part Number | MBT50-4-27 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Extended Washer Thickness | 0.069 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN |
| Head Height | 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN |
| Fastener Length | 2.199 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416, TYPE II, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.3125 INCHES NOMINAL IN |
| Thread Length | 0.512 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DOUBLE HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.687 INCHES NOMINAL IN |
| Width Between Flats | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Grip Diameter | 0.2641 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| 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 |
|---|---|
| MBT50-4-27 PRIMARY | Hi-Shear Corporation (USA) |
NSN 5306-01-605-3397 is a Bolt,machine, manufactured by Hi-Shear Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-605-3397 has 1 manufacturer part number on file: MBT50-4-27 (Hi-Shear Corporation).
Key specifications for MBT50-4-27: Extended Washer Thickness: 0.069 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN; Head Height: 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN; Fastener Length: 2.199 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416, TYPE II, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 18 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.