The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-062-1438, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Rolls-Royce Solutions America Inc. Government technical data includes 20 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 | 5306-00-062-1438 |
| Primary Part Number | 5139552 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Rolls-Royce Solutions America Inc |
| Status | ACTIVE |
| Fourth Diameter From Head | 0.515 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN |
| Head Height | 0.320 INCHES NOMINAL IN |
| Fastener Length | 4.160 INCHES MINIMUM AND 4.180 INCHES MAXIMUM IN |
| Thread Length | 0.860 INCHES NOMINAL IN |
| First Diameter From Head | 0.568 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 1.640 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.562 INCHES IN |
| Distance From Largest Bearing Surface of Head to End of Third Diameter | 1.900 INCHES NOMINAL IN |
| Head Style | ROUND W/WRENCH FLATS CHAMFERED |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.500 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Width Between Flats | 0.800 INCHES MINIMUM AND 0.816 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.500 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL OVERALL |
| Distance From Largest Bearing Surface of Head to End of Fourth Diameter | 3.300 INCHES NOMINAL IN |
| Third Diameter From Head | 0.568 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN |
| Thread Series Designator | UNF |
| Head Diameter | 0.960 INCHES NOMINAL IN |
| 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 |
|---|---|
| 5139552 PRIMARY | Rolls-Royce Solutions America Inc (USA) |
NSN 5306-00-062-1438 is a Bolt,externally Relieved Body, manufactured by Rolls-Royce Solutions America Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-062-1438 has 1 manufacturer part number on file: 5139552 (Rolls-Royce Solutions America Inc).
Key specifications for 5139552: Fourth Diameter From Head: 0.515 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN; Head Height: 0.320 INCHES NOMINAL IN; Fastener Length: 4.160 INCHES MINIMUM AND 4.180 INCHES MAXIMUM IN; Thread Length: 0.860 INCHES NOMINAL IN. 20 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.