The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-020-2439, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 16 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 | 5306-01-020-2439 |
| Primary Part Number | SPE16N25 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Head Height | 0.310 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | DTD904,FSCM K0378 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.750 INCHES NOMINAL IN |
| Material Document and Classification | EN165,FSCM K0378 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.496 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 1.500 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.415 INCHES MINIMUM AND 0.425 INCHES MAXIMUM IN |
| Width Between Flats | 0.742 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.250 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 2 |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| 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 |
|---|---|
| SPE16N25 PRIMARY | Naval Inventory Control Point Mechanicsburg (USA) |
NSN 5306-01-020-2439 is a Bolt,externally Relieved Body, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-020-2439 has 1 manufacturer part number on file: SPE16N25 (Naval Inventory Control Point Mechanicsburg).
Key specifications for SPE16N25: Head Height: 0.310 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN; Surface Treatment Document and Classification: DTD904,FSCM K0378 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.750 INCHES NOMINAL IN; Material Document and Classification: EN165,FSCM K0378 MFR REF SINGLE MATERIAL RESPONSE OVERALL. 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.