The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-00-073-4079, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-073-4079 |
| Primary Part Number | 107C2522-2 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Head Height | 0.125 INCHES NOMINAL IN |
| Fastener Length | 4.660 INCHES NOMINAL IN |
| Thread Length | 0.690 INCHES NOMINAL IN |
| Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.141 INCHES NOMINAL GRIP IN |
| Style Designator | COUNTERBORE THREADED |
| Material Document and Classification | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Counterbore Depth | 0.040 INCHES NOMINAL IN |
| Head Style | ROUND W/WRENCH FLATS |
| Thread Direction | RIGHT-HAND |
| Counterbore Diameter | 0.469 INCHES NOMINAL IN |
| Width Between Flats | 0.750 INCHES NOMINAL IN |
| Concentric Hole Diameter | 0.375 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP E4340 OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 4.460 INCHES NOMINAL FIRST HOLE IN |
| Head Diameter | 0.875 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 |
|---|---|
| 107C2522-2 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 107C2522-2 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-00-073-4079 is a Bolt,internally Relieved Body, manufactured by The Boeing Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-073-4079 has 1 manufacturer part number on file: 107C2522-2 (The Boeing Company).
Key specifications for 107C2522-2: Head Height: 0.125 INCHES NOMINAL IN; Fastener Length: 4.660 INCHES NOMINAL IN; Thread Length: 0.690 INCHES NOMINAL IN; Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 43.0 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.