The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-297-4077, 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 15 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-297-4077 |
| Primary Part Number | 9V4319 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Extended Washer Thickness | 2.55 MILLIMETERS MINIMUM AND 3.55 MILLIMETERS MAXIMUM MM |
| Head Height | 12.7 MILLIMETERS NOMINAL MM |
| Fastener Length | 76.2 MILLIMETERS NOMINAL MM |
| Extended Washer Diameter | 19.05 MILLIMETERS NOMINAL MM |
| Thread Length | 20.57 MILLIMETERS NOMINAL MM |
| First Diameter From Head | 10.41 MILLIMETERS MINIMUM AND 10.91 MILLIMETERS MAXIMUM MM |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | DOUBLE HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 12.7 MILLIMETERS NOMINAL MM |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 55.63 MILLIMETERS NOMINAL MM |
| Externally Relieved Body Diameter Quantity | 1 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 9V4319 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 5306-01-297-4077 is a Bolt,externally Relieved Body, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-297-4077 has 1 manufacturer part number on file: 9V4319 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 9V4319: Extended Washer Thickness: 2.55 MILLIMETERS MINIMUM AND 3.55 MILLIMETERS MAXIMUM MM; Head Height: 12.7 MILLIMETERS NOMINAL MM; Fastener Length: 76.2 MILLIMETERS NOMINAL MM; Extended Washer Diameter: 19.05 MILLIMETERS NOMINAL MM. 15 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.