The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-215-5186, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 18 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 | 5306-01-215-5186 |
| Primary Part Number | 742578-1 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Head Height | 0.140 INCHES NOMINAL IN |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Thread Length | 0.295 INCHES NOMINAL IN |
| Hardness Rating | 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| Hole Configuration Style | HEXAGON FLATS |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.142 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.364 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.125 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 410 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Diameter | 0.031 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5306-01-215-5186 is a Bolt,externally Relieved Body, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-215-5186 has 2 manufacturer part numbers on file: 742578-1 (Hamilton Sundstrand Corporation Dba Collins Aerospace), 742578-1 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
Key specifications for 742578-1: Head Height: 0.140 INCHES NOMINAL IN; Fastener Length: 0.500 INCHES NOMINAL IN; Thread Length: 0.295 INCHES NOMINAL IN; Hardness Rating: 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM 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.