The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-152-5176, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.. Government technical data includes 26 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 | 5306-00-152-5176 |
| Primary Part Number | 126687 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. |
| Status | ACTIVE |
| Fourth Diameter From Head | 0.434 INCHES MINIMUM AND 0.435 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Fifth Diameter | 0.890 INCHES NOMINAL IN |
| Head Height | 0.090 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN |
| Fastener Length | 2.745 INCHES MINIMUM AND 2.755 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.615 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN |
| Hardness Rating | 34.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.350 INCHES MINIMUM AND 0.368 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 0.420 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.4375 INCHES IN |
| Distance From Largest Bearing Surface of Head to End of Third Diameter | 0.600 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN |
| Head Style | DRIVE |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.443 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Fifth Diameter From Head | 0.358 INCHES MINIMUM AND 0.368 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 5 |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 8740 OVERALL |
| Distance From Largest Bearing Surface of Head to End of Fourth Diameter | 0.670 INCHES NOMINAL IN |
| Third Diameter From Head | 0.358 INCHES MINIMUM AND 0.368 INCHES MAXIMUM IN |
| Thread Series Designator | UNF |
| Head Diameter | 0.750 INCHES MINIMUM AND 0.770 INCHES MAXIMUM 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 |
|---|---|
| 126687 PRIMARY | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN) |
NSN 5306-00-152-5176 is a Bolt,externally Relieved Body, manufactured by Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp., classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-152-5176 has 1 manufacturer part number on file: 126687 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).
Key specifications for 126687: Fourth Diameter From Head: 0.434 INCHES MINIMUM AND 0.435 INCHES MAXIMUM IN; Distance From Largest Bearing Surface of Head to End of Fifth Diameter: 0.890 INCHES NOMINAL IN; Head Height: 0.090 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN; Fastener Length: 2.745 INCHES MINIMUM AND 2.755 INCHES MAXIMUM IN. 26 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.