The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-472-5391, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Us Army Aviation and Missile Command. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-472-5391 |
| Primary Part Number | 13588720-3 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Head Height | 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN |
| Fastener Length | 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN |
| Thread Length | 0.375 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.186 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN |
| Width Between Flats | 0.242 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | PASSIVATE AND LUBRICANT OVERALL |
| Minimum Tensile Strength | 140000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| MIS-PRF-53016 | Us Army Aviation and Missile Command (USA) |
| FTC 7590-3 | Fastener Technology Corp (USA) |
| 13588720-3 PRIMARY | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| 13495121-3 | 5/9 Secondary reference Us Army Aviation and Missile Command |
NSN 5306-01-472-5391 is a Bolt,externally Relieved Body, manufactured by Us Army Aviation and Missile Command, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-472-5391 has 3 manufacturer part numbers on file: MIS-PRF-53016 (Us Army Aviation and Missile Command), FTC 7590-3 (Fastener Technology Corp), 13588720-3 (Us Army Aviation and Missile Command).
2 possible matches (shared part number, not a government interchangeability claim): 5306-01-473-6488, 5306-01-473-6571. Verify interchangeability with system specifications before substitution.
Key specifications for 13588720-3: Head Height: 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN; Fastener Length: 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN; Thread Length: 0.375 INCHES NOMINAL IN; Nominal Thread Diameter: 0.250 INCHES IN. 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.