The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-298-4872, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Curtiss-Wright Controls, Inc. Div Actuation Division. Government technical data includes 23 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 | 5306-00-298-4872 |
| Primary Part Number | 125D174 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Curtiss-Wright Controls, Inc. Div Actuation Division |
| Status | ACTIVE |
| Head Height | 0.260 INCHES NOMINAL IN |
| Fastener Length | 1.220 INCHES NOMINAL IN |
| Distance From Centerline to Flat | 0.531 INCHES NOMINAL IN |
| Thread Length | 0.700 INCHES MINIMUM IN |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.094 INCHES NOMINAL FIRST HOLE IN |
| First Diameter From Head | 0.494 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 0.420 INCHES MINIMUM AND 0.460 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Distance From Largest Bearing Surface of Head to End of Third Diameter | 0.480 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN |
| Head Style | DEE CHAMFER |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.434 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.120 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 3 |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| Third Diameter From Head | 0.491 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.080 INCHES NOMINAL FIRST HOLE IN |
| Head Diameter | 0.871 INCHES MINIMUM AND 0.875 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 |
|---|---|
| 125D174 PRIMARY | Curtiss-Wright Controls, Inc. Div Actuation Division (USA) |
NSN 5306-00-298-4872 is a Bolt,externally Relieved Body, manufactured by Curtiss-Wright Controls, Inc. Div Actuation Division, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-298-4872 has 1 manufacturer part number on file: 125D174 (Curtiss-Wright Controls, Inc. Div Actuation Division).
Key specifications for 125D174: Head Height: 0.260 INCHES NOMINAL IN; Fastener Length: 1.220 INCHES NOMINAL IN; Distance From Centerline to Flat: 0.531 INCHES NOMINAL IN; Thread Length: 0.700 INCHES MINIMUM IN. 23 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.