The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-208-7652, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 22 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 | 5306-00-208-7652 |
| Primary Part Number | 258855 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Head Height | 0.193 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN |
| Fastener Length | 1.770 INCHES MINIMUM AND 1.790 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | PWA43,FSCM 77445 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.460 INCHES MINIMUM AND 0.480 INCHES MAXIMUM IN |
| Hardness Rating | 30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| Hole Configuration Style | HEXAGON FLATS |
| Material Document and Classification | PWA722,FSCM 77445 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.309 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 1.175 INCHES MINIMUM AND 1.195 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.229 INCHES MINIMUM AND 0.233 INCHES MAXIMUM IN |
| Width Between Flats | 0.500 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Nonstandard Thread Pitch Diameter | +0.2800 TO 0.2824 INCHES IN |
| Externally Relieved Body Diameter Quantity | 2 |
| Surface Treatment | CADMIUM OVERALL |
| Thread Quantity Per Inch | 24 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Hole Diameter | 0.062 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 |
|---|---|
| 258855 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 5306-00-208-7652 is a Bolt,externally Relieved Body, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-208-7652 has 1 manufacturer part number on file: 258855 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 258855: Head Height: 0.193 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN; Fastener Length: 1.770 INCHES MINIMUM AND 1.790 INCHES MAXIMUM IN; Surface Treatment Document and Classification: PWA43,FSCM 77445 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.460 INCHES MINIMUM AND 0.480 INCHES MAXIMUM IN. 22 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.