The Bolt,shoulder, cataloged under National Stock Number 5306-00-184-0413, 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 17 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 | 5306-00-184-0413 |
| Primary Part Number | MB300-617 |
| 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 | 1.343 INCHES NOMINAL IN |
| Shoulder Length | 1.000 INCHES NOMINAL FIRST SHOULDER IN |
| Surface Treatment Document and Classification | DS301-1 FSCM 04243 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.3080 INCHES MINIMUM AND 0.3100 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.253 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | S.96 FSCM 05901 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | CROWNED HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.493 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM 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 |
|---|---|
| MB300-617 PRIMARY | Martin-Baker Aircraft Company Limited (GBR) |
NSN 5306-00-184-0413 is a Bolt,shoulder, manufactured by Martin-Baker Aircraft Company Limited, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-184-0413 has 1 manufacturer part number on file: MB300-617 (Martin-Baker Aircraft Company Limited).
Key specifications for MB300-617: Head Height: 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN; Fastener Length: 1.343 INCHES NOMINAL IN; Shoulder Length: 1.000 INCHES NOMINAL FIRST SHOULDER IN; Surface Treatment Document and Classification: DS301-1 FSCM 04243 MFR REF SINGLE TREATMENT RESPONSE OVERALL. 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.