The Bolt,machine, cataloged under National Stock Number 5306-01-384-1378, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 11 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-384-1378 |
| Primary Part Number | 803-50011003-B5XX-156 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Head Height | 2.424 INCHES MINIMUM AND 2.576 INCHES MAXIMUM IN |
| Fastener Length | 4.000 INCHES NOMINAL IN |
| Thread Length | 1.250 INCHES MINIMUM IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 6.000 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 16 |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 803-50011003-B5XX-156 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| MIL-S-1222 TY1 3/8-16UNC-2AX4.00 | 5/9 Secondary reference Naval Inventory Control Point Mechanicsburg |
| MIL-S-1222TYPEII3/8UNRC-3AX4.00 | 5/9 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 803-5001003-B5XX-110 | 5/9 Secondary reference Naval Sea Systems Command |
| MIL-DTL-1222J | 4/1 Identification reference U.S. Government activity |
NSN 5306-01-384-1378 is a Bolt,machine, manufactured by Naval Sea Systems Command, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-384-1378 has 1 manufacturer part number on file: 803-50011003-B5XX-156 (Naval Sea Systems Command).
Key specifications for 803-50011003-B5XX-156: Head Height: 2.424 INCHES MINIMUM AND 2.576 INCHES MAXIMUM IN; Fastener Length: 4.000 INCHES NOMINAL IN; Thread Length: 1.250 INCHES MINIMUM IN; Nominal Thread Diameter: 0.375 INCHES IN. 11 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.