The Bolt,machine, cataloged under National Stock Number 5306-01-454-3572, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-454-3572 |
| Primary Part Number | 6643028-75 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| Status | ACTIVE |
| Fastener Length | 4.500 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Thread Quantity Per Inch | 10 |
| 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 |
|---|---|
| 6643028-75 | General Electric Company (USA) |
| 6643028-75 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| Reference | Meaning |
|---|---|
| 6643028-75 | 3/9 Design control — primary reference Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand |
| 6643028-75 | 5/9 Secondary reference General Electric Co Naval and Drive Turbine Systems Dept |
| 509E836AC P/N 008 | 5/9 Secondary reference General Electric Co Naval and Drive Turbine Systems Dept |
NSN 5306-01-454-3572 is a Bolt,machine, manufactured by Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-454-3572 has 2 manufacturer part numbers on file: 6643028-75 (General Electric Company), 6643028-75 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions).
Key specifications for 6643028-75: Fastener Length: 4.500 INCHES NOMINAL IN; Nominal Thread Diameter: 0.750 INCHES IN; Thread Quantity Per Inch: 10; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC). 4 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.