The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-238-3188, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Daimler Truck North America Llc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 — Bolts (FSG 53) |
| Manufacturers | Daimler Truck North America Llc (CAGE 64678) |
| Parameter | Value |
|---|---|
| NSN | 5306-01-238-3188 |
| Primary Part Number | 366 990 03 01 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Daimler Truck North America Llc |
| Status | ACTIVE |
| Extended Washer Thickness | 2.8 MILLIMETERS MINIMUM AND 3.2 MILLIMETERS MAXIMUM MM |
| Head Height | 12.0 MILLIMETERS NOMINAL MM |
| External Thread Tolerance Class | 6G G |
| Fastener Length | 110.50 MILLIMETERS MINIMUM AND 111.50 MILLIMETERS MAXIMUM MM |
| Extended Washer Diameter | 22.5 MILLIMETERS MINIMUM AND 23.5 MILLIMETERS MAXIMUM MM |
| Thread Pitch in Millimeters | 1.75 |
| Thread Length | 60.0 MILLIMETERS MINIMUM AND 80.0 MILLIMETERS MAXIMUM MM |
| First Diameter From Head | 10.8 MILLIMETERS MINIMUM AND 10.9 MILLIMETERS MAXIMUM MM |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 14.85 MILLIMETERS MINIMUM AND 15.15 MILLIMETERS MAXIMUM MM |
| Nominal Thread Diameter | 12.0 MILLIMETERS MM |
| Distance From Largest Bearing Surface of Head to End of Third Diameter | 30.0 MILLIMETERS MINIMUM AND 51.5 MILLIMETERS MAXIMUM MM |
| Head Style | HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 12.3 MILLIMETERS MINIMUM AND 12.4 MILLIMETERS MAXIMUM MM |
| Point Style | FLAT |
| Width Between Flats | 22.0 MILLIMETERS MINIMUM AND 22.4 MILLIMETERS MAXIMUM MM |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 9.85 MILLIMETERS MINIMUM AND 10.15 MILLIMETERS MAXIMUM MM |
| Externally Relieved Body Diameter Quantity | 1 |
| Material | STEEL PROPERTY CLASS 12.9 OVERALL |
| Third Diameter From Head | 10.8 MILLIMETERS MINIMUM AND 10.9 MILLIMETERS MAXIMUM MM |
| 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 |
|---|---|
| 366 990 03 01 PRIMARY | Daimler Truck North America Llc (USA) |
| Reference | Meaning |
|---|---|
| 352 990 42 01 | 5/9 Secondary reference Daimler Ag |
| 352 990 42 01 | 5/9 Secondary reference Daimler Truck North America Llc |
NSN 5306-01-238-3188 is a Bolt,externally Relieved Body, manufactured by Daimler Truck North America Llc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-238-3188 has 1 manufacturer part number on file: 366 990 03 01 (Daimler Truck North America Llc).
Key specifications for 366 990 03 01: Extended Washer Thickness: 2.8 MILLIMETERS MINIMUM AND 3.2 MILLIMETERS MAXIMUM MM; Head Height: 12.0 MILLIMETERS NOMINAL MM; External Thread Tolerance Class: 6G G; Fastener Length: 110.50 MILLIMETERS MINIMUM AND 111.50 MILLIMETERS MAXIMUM MM. 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.