The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-245-7193, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Support Services Corp. Government technical data includes 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-245-7193 |
| Primary Part Number | 125B573H01 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Northrop Grumman Support Services Corp |
| Status | ACTIVE |
| Head Height | 0.378 INCHES MINIMUM AND 0.403 INCHES MAXIMUM IN |
| Fastener Length | 4.500 INCHES NOMINAL IN |
| Thread Length | 1.370 INCHES NOMINAL IN |
| Hole Configuration Style | HEXAGON FLATS |
| First Diameter From Head | 0.625 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 2.060 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.500 INCHES NOMINAL IN |
| Width Between Flats | 0.922 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.690 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 11 |
| Hole Quantity | 1 |
| Hole Type | DRILLED |
| Hole Diameter | 0.092 INCHES MINIMUM AND 0.100 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 |
|---|---|
| 125B573H01 PRIMARY | Northrop Grumman Support Services Corp (USA) |
| Reference | Meaning |
|---|---|
| 125B573H01 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5306-01-245-7193 is a Bolt,externally Relieved Body, manufactured by Northrop Grumman Support Services Corp, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-245-7193 has 1 manufacturer part number on file: 125B573H01 (Northrop Grumman Support Services Corp).
Key specifications for 125B573H01: Head Height: 0.378 INCHES MINIMUM AND 0.403 INCHES MAXIMUM IN; Fastener Length: 4.500 INCHES NOMINAL IN; Thread Length: 1.370 INCHES NOMINAL IN; Hole Configuration Style: HEXAGON FLATS. 18 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.