The Bolt,u, cataloged under National Stock Number 5306-01-666-1738, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Chicago Hardware and Fixture Company. Government technical data includes 10 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 | 5306-01-666-1738 |
| Primary Part Number | 504744 |
| Item Name | Bolt,u |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Chicago Hardware and Fixture Company |
| Status | ACTIVE |
| Inside Distance Between Shanks | 2.25 INCHES NOMINAL IN |
| Thread Length | 1.25 INCHES NOMINAL IN |
| Distance From Inside Center of Bend to Bolt End | 1.00 INCHES NOMINAL IN |
| Style Designator | ROUND BEND |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL COMP 304 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 |
|---|---|
| 504744 PRIMARY | Chicago Hardware and Fixture Company (USA) |
NSN 5306-01-666-1738 is a Bolt,u, manufactured by Chicago Hardware and Fixture Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-666-1738 has 1 manufacturer part number on file: 504744 (Chicago Hardware and Fixture Company).
Key specifications for 504744: Inside Distance Between Shanks: 2.25 INCHES NOMINAL IN; Thread Length: 1.25 INCHES NOMINAL IN; Distance From Inside Center of Bend to Bolt End: 1.00 INCHES NOMINAL IN; Style Designator: ROUND BEND. 10 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.