The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-722-5035, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector. Government technical data includes 21 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-722-5035 |
| Primary Part Number | 2-43172-1 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
| Status | ACTIVE |
| Head Height | 0.190 INCHES NOMINAL IN |
| Fastener Length | 0.780 INCHES NOMINAL IN |
| Thread Length | 0.280 INCHES MINIMUM IN |
| Hole Configuration Style | ROUND |
| First Diameter From Head | 0.370 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 0.500 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.270 INCHES NOMINAL IN |
| Width Between Flats | 0.562 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.400 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 2 |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 4130 OVERALL |
| Hole Quantity | 3 |
| Thread Series Designator | UNF |
| Hole Type | DRILLED |
| Hole Diameter | 0.062 INCHES NOMINAL 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 |
|---|---|
| 2-43172-1 PRIMARY | Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector (USA) |
| Reference | Meaning |
|---|---|
| 2-43172-1 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
NSN 5306-00-722-5035 is a Bolt,externally Relieved Body, manufactured by Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-722-5035 has 1 manufacturer part number on file: 2-43172-1 (Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector).
Key specifications for 2-43172-1: Head Height: 0.190 INCHES NOMINAL IN; Fastener Length: 0.780 INCHES NOMINAL IN; Thread Length: 0.280 INCHES MINIMUM IN; Hole Configuration Style: ROUND. 21 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.