The Clamp,hub, cataloged under National Stock Number 3040-01-174-6654, 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 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-174-6654 |
| Primary Part Number | 756954-1 |
| Item Name | Clamp,hub |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Air Armament Center/ En |
| Status | ACTIVE |
| Plain Hole Diameter | 0.2520 INCHES MINIMUM AND 0.2620 INCHES MAXIMUM IN |
| Clamp Securing Hole Style | THREADED |
| Style Designator | ROUND W/EXTENDED CLAMPING DEVICE |
| Material Document and Classification | QQ-A-250/4, ALLOY 2024, T4 FED SPEC SINGLE MATERIAL RESPONSE |
| Distance From Bore Centerline to End | 1.310 INCHES NOMINAL IN |
| Nominal Thread Size | 0.250 INCHES IN |
| Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Surface Treatment | CHROMATE |
| Bore Diameter | 1.4400 INCHES MINIMUM AND 1.4500 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY 2024 |
| Thickness | 0.500 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 |
| Part Number | Manufacturer |
|---|---|
| 756954-1 PRIMARY | Air Armament Center/ En (USA) |
NSN 3040-01-174-6654 is a Clamp,hub, manufactured by Air Armament Center/ En, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-174-6654 has 1 manufacturer part number on file: 756954-1 (Air Armament Center/ En).
Key specifications for 756954-1: Plain Hole Diameter: 0.2520 INCHES MINIMUM AND 0.2620 INCHES MAXIMUM IN; Clamp Securing Hole Style: THREADED; Style Designator: ROUND W/EXTENDED CLAMPING DEVICE; Material Document and Classification: QQ-A-250/4, ALLOY 2024, T4 FED SPEC SINGLE MATERIAL RESPONSE. 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.