The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-445-7358, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-445-7358 |
| Primary Part Number | 39-8820-501 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.300 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN |
| Fastener Length | 6.240 INCHES MINIMUM AND 6.250 INCHES MAXIMUM IN |
| Thread Length | 0.450 INCHES MINIMUM IN |
| Material Document and Classification | AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.623 INCHES MINIMUM AND 0.624 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 3.970 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Distance From Largest Bearing Surface of Head to End of Third Diameter | 5.790 INCHES NOMINAL IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.433 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN |
| Width Between Flats | 0.937 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 1.820 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 3 |
| Minimum Tensile Strength | 130000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Third Diameter From Head | 0.623 INCHES MINIMUM AND 0.624 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 39-8820-501 | Huck International, Inc (USA) |
| 39-8820-501 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 39-8820-501 | Howmet Global Fastening Systems Inc (USA) |
| 39-8820-501 | Aerospace Manufacturing Corporation Dba Aerospace Manufacturing Inc (USA) |
| 39-8820-501 | Huck International, Inc. Div Huck Products Division (USA) |
| 39-8820-501 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 39-8820-501 | 3/2 Design control — primary reference U.S. Government activity |
| 39-8820-501 | 5/2 Secondary reference U.S. Government activity |
| 39-8820-501 | 5/9 Secondary reference Mecair Aerospace Industries,subsidiary of Spstechnologiesdiv Division of Sps Technologiesdba Mecair Inc. Div Division of Sps Technologies |
| 39-8820-501 | 5/9 Secondary reference Sps Technologies Inc Research and Development Laboratory |
NSN 5306-00-445-7358 is a Bolt,externally Relieved Body, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-445-7358 has 6 manufacturer part numbers on file: 39-8820-501 (Huck International, Inc), 39-8820-501 (Sps Technologies, Llc Dba PB Fasteners), 39-8820-501 (Howmet Global Fastening Systems Inc), 39-8820-501 (Aerospace Manufacturing Corporation Dba Aerospace Manufacturing Inc), 39-8820-501 (Huck International, Inc. Div Huck Products Division) and 1 more.
Key specifications for 39-8820-501: Head Height: 0.300 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN; Fastener Length: 6.240 INCHES MINIMUM AND 6.250 INCHES MAXIMUM IN; Thread Length: 0.450 INCHES MINIMUM IN; Material Document and Classification: AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 19 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.