The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-026-6875, 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 17 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-026-6875 |
| Primary Part Number | 4048153 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Fourth Diameter From Head | 0.247 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN |
| Fastener Length | 1.890 INCHES MINIMUM AND 1.910 INCHES MAXIMUM IN |
| Thread Length | 0.445 INCHES NOMINAL IN |
| Material Document and Classification | PWA92 FSCM 77445 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.335 INCHES MINIMUM AND 0.336 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 1.050 INCHES MINIMUM AND 1.070 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Distance From Largest Bearing Surface of Head to End of Third Diameter | 1.135 INCHES MINIMUM AND 1.155 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.247 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.515 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | NICKEL OVERALL |
| Distance From Largest Bearing Surface of Head to End of Fourth Diameter | 1.445 INCHES MINIMUM AND 1.465 INCHES MAXIMUM IN |
| Third Diameter From Head | 0.318 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
NSN 5306-01-026-6875 is a Bolt,externally Relieved Body, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-026-6875 has 2 manufacturer part numbers on file: 4048153 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 4048153 (Rtx Corporation Div Pratt & Whitney).
Key specifications for 4048153: Fourth Diameter From Head: 0.247 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN; Fastener Length: 1.890 INCHES MINIMUM AND 1.910 INCHES MAXIMUM IN; Thread Length: 0.445 INCHES NOMINAL IN; Material Document and Classification: PWA92 FSCM 77445 MFR REF SINGLE MATERIAL RESPONSE OVERALL. 17 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.