The Bolt,shoulder, cataloged under National Stock Number 5306-00-836-6071, 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 16 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 | 5306-00-836-6071 |
| Primary Part Number | MBEU258X5 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Martin-Baker Aircraft Company Limited |
| Status | ACTIVE |
| Head Height | 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN |
| Fastener Length | 1.450 INCHES NOMINAL IN |
| Shoulder Length | 1.025 INCHES NOMINAL FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Shoulder Diameter | 0.3090 INCHES MINIMUM AND 0.3110 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.425 INCHES MINIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | CROWNED HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.495 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| MBEU258X5 PRIMARY | Martin-Baker Aircraft Company Limited (GBR) |
NSN 5306-00-836-6071 is a Bolt,shoulder, manufactured by Martin-Baker Aircraft Company Limited, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-836-6071 has 1 manufacturer part number on file: MBEU258X5 (Martin-Baker Aircraft Company Limited).
Key specifications for MBEU258X5: Head Height: 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN; Fastener Length: 1.450 INCHES NOMINAL IN; Shoulder Length: 1.025 INCHES NOMINAL FIRST SHOULDER IN; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL. 16 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.