The Bolt,machine, cataloged under National Stock Number 5306-01-135-1122, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Martin-Baker Aircraft Company Limited. Government technical data includes 14 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 | 5306-01-135-1122 |
| Primary Part Number | MBEU-66538-2 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Martin-Baker Aircraft Company Limited |
| Status | ACTIVE |
| Head Height | 0.125 INCHES MINIMUM AND 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM0.140 INCHES MAXIMUM IN |
| Fastener Length | 0.780 INCHES NOMINAL0.780 INCHES NOMINAL IN |
| Thread Length | 0.280 INCHES NOMINAL0.280 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES0.250 INCHES IN |
| Head Style | HEXAGONHEXAGON |
| Thread Direction | RIGHT-HANDRIGHT-HAND |
| Width Between Flats | 0.430 INCHES MINIMUM AND 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM0.439 INCHES MAXIMUM IN |
| Askewed Head Angle | 90.0 DEGREES NOMINAL90.0 DEGREES NOMINAL |
| Surface Treatment | PASSIVATE OVERALLPASSIVATE OVERALL |
| Minimum Tensile Strength | 80000 POUNDS PER SQUARE INCH80000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A2A |
| Thread Quantity Per Inch | 2424 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNFUNF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| MBEU-66538-2 PRIMARY | Martin-Baker Aircraft Company Limited (GBR) |
NSN 5306-01-135-1122 is a Bolt,machine, manufactured by Martin-Baker Aircraft Company Limited, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-135-1122 has 1 manufacturer part number on file: MBEU-66538-2 (Martin-Baker Aircraft Company Limited).
Key specifications for MBEU-66538-2: Head Height: 0.125 INCHES MINIMUM AND 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM0.140 INCHES MAXIMUM IN; Fastener Length: 0.780 INCHES NOMINAL0.780 INCHES NOMINAL IN; Thread Length: 0.280 INCHES NOMINAL0.280 INCHES NOMINAL IN; Nominal Thread Diameter: 0.250 INCHES0.250 INCHES IN. 14 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.