The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-006-4758, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 17 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-006-4758 |
| Primary Part Number | 6N2954 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Head Height | 0.120 INCHES NOMINAL IN |
| Fastener Length | 3.719 INCHES NOMINAL IN |
| Thread Length | 1.500 INCHES MINIMUM IN |
| Hardness Rating | 20.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.124 INCHES NOMINAL FIRST HOLE IN |
| First Diameter From Head | 0.250 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.438 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 1.125 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 1141 OR STEEL COMP 1144 OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 3.594 INCHES NOMINAL FIRST HOLE IN |
| Head Diameter | 0.427 INCHES MINIMUM AND 0.437 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 |
|---|---|
| 6N2954 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 8L4183-00 | 5/9 Secondary reference Mil-Tech Mfg Inc |
| 8L4183 | 5/9 Secondary reference Caterpillar Inc Div Caterpillar Defense |
NSN 5306-00-006-4758 is a Bolt,externally Relieved Body, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-006-4758 has 1 manufacturer part number on file: 6N2954 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 6N2954: Head Height: 0.120 INCHES NOMINAL IN; Fastener Length: 3.719 INCHES NOMINAL IN; Thread Length: 1.500 INCHES MINIMUM IN; Hardness Rating: 20.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL. 17 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.