The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-298-4874, 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 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-298-4874 |
| Primary Part Number | 2057D115 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Curtiss-Wright Controls, Inc. Div Actuation Division |
| Status | ACTIVE |
| Head Height | 0.219 INCHES NOMINAL IN |
| Fastener Length | 2.250 INCHES NOMINAL IN |
| Thread Length | 0.656 INCHES MINIMUM IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS 6320 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.395 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 1.344 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Distance From Largest Bearing Surface of Head to End of Third Diameter | 1.594 INCHES NOMINAL IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.437 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Width Between Flats | 0.553 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.060 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 3 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 8735 OVERALL |
| Third Diameter From Head | 0.302 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 2057D115 PRIMARY | Curtiss-Wright Controls, Inc. Div Actuation Division (USA) |
| Reference | Meaning |
|---|---|
| 2057D115 | 5/9 Secondary reference Curtiss-Wright Corp |
NSN 5306-00-298-4874 is a Bolt,externally Relieved Body, manufactured by Curtiss-Wright Controls, Inc. Div Actuation Division, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-298-4874 has 1 manufacturer part number on file: 2057D115 (Curtiss-Wright Controls, Inc. Div Actuation Division).
Key specifications for 2057D115: Head Height: 0.219 INCHES NOMINAL IN; Fastener Length: 2.250 INCHES NOMINAL IN; Thread Length: 0.656 INCHES MINIMUM IN; Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL. 20 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.