The Bolt,machine, cataloged under National Stock Number 5306-01-653-9477, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Timken Gears & Services Inc. Div Philadelphia Gear. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-653-9477 |
| Primary Part Number | 6643140-10 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Timken Gears & Services Inc. Div Philadelphia Gear |
| Status | ACTIVE |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Thread Direction | RIGHT-HAND |
| 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 |
|---|---|
| 6643140-10 PRIMARY | Timken Gears & Services Inc. Div Philadelphia Gear (USA) |
| Reference | Meaning |
|---|---|
| S9241-CU-MMA-010 REV 2 TABLE 6-1 | 5/1 Secondary reference General Electric Company |
NSN 5306-01-653-9477 is a Bolt,machine, manufactured by Timken Gears & Services Inc. Div Philadelphia Gear, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-653-9477 has 1 manufacturer part number on file: 6643140-10 (Timken Gears & Services Inc. Div Philadelphia Gear).
Key specifications for 6643140-10: Nominal Thread Diameter: 0.750 INCHES IN; Thread Direction: RIGHT-HAND; Special Features: 3/4-10 X 4 INCH TO SEPERATE FIRST AND SECOND REDUCTION BEARING CAPS HORIZONTAL JOINTS IN; Part Name Assigned by Controlling Agency: JACKING BOLT. 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.