The Clamp,hub, cataloged under National Stock Number 3040-01-282-1737, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Air Armament Center/ En. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-282-1737 |
| Primary Part Number | 8644853 |
| Item Name | Clamp,hub |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Air Armament Center/ En |
| Status | ACTIVE |
| Plain Hole Diameter | 0.2650 INCHES NOMINAL IN |
| Clamp Securing Hole Style | THREADED |
| Style Designator | RECTANGULAR, SINGLE BOLT SECURED |
| Material Document and Classification | FED STD 66 FED STD 1ST MATERIAL RESPONSE OR AISI 1018 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 1018 ASSN STD SINGLE MATERIAL RESPONSE AND FED STD 66 FED STD 2ND MATERIAL RESPONSE OR AISI 1020 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 1020 ASSN STD SINGLE MATERIAL RESPONSE |
| Counterbore Depth | 0.2500 INCHES NOMINAL IN |
| Distance From Bore Centerline to End | 1.130 INCHES NOMINAL IN |
| Nominal Thread Size | 0.250 INCHES IN |
| Counterbore Diameter | 0.4060 INCHES NOMINAL IN |
| Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Surface Treatment | CADMIUM AND CHROMATE |
| Bore Diameter | 0.6250 INCHES NOMINAL IN |
| Material | STEEL COMP 1018 OR STEEL COMP 1020 |
| Thickness | 1.620 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 3040-01-282-1737 is a Clamp,hub, manufactured by Air Armament Center/ En, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-282-1737 has 2 manufacturer part numbers on file: 8644853 (Syn-Tech System, Inc.), 8644853 (Air Armament Center/ En).
Key specifications for 8644853: Plain Hole Diameter: 0.2650 INCHES NOMINAL IN; Clamp Securing Hole Style: THREADED; Style Designator: RECTANGULAR, SINGLE BOLT SECURED; Material Document and Classification: FED STD 66 FED STD 1ST MATERIAL RESPONSE OR AISI 1018 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 1018 ASSN STD SINGLE MATERIAL RESPONSE AND FED STD 66 FED STD 2ND MATERIAL RESPONSE OR AISI 1020 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 1020 ASSN STD SINGLE MATERIAL RESPONSE. 13 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.