The Bell Crank, cataloged under National Stock Number 3040-00-736-8683, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Meritor Industrial Products, Llc. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-736-8683 |
| Primary Part Number | A372U21 |
| Item Name | Bell Crank |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Meritor Industrial Products, Llc |
| Status | ACTIVE |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 2.281 INCHES NOMINAL FIRST END IN |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 9.469 INCHES NOMINAL SECOND END IN |
| End Hole/ball Diameter | 0.438 INCHES NOMINAL SECOND END IN |
| End Hole/ball Diameter | 0.995 INCHES NOMINAL FIRST END IN |
| Bore Length | 1.312 INCHES NOMINAL IN |
| Style Designator | RAISED FACE PIVOT HOLE, ONE ARM W/RAISED HOLE |
| Surface Treatment | PAINT |
| Bore Diameter | 0.995 INCHES NOMINAL IN |
| Material | IRON |
| 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 |
|---|---|
| A372U21 PRIMARY | Meritor Industrial Products, Llc (USA) |
| 7368683 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| A372U21 | Meritor Heavy Vehicle Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 403M4 | 5/9 Secondary reference Diamond Reo Truck Co |
| 913903 | 5/9 Secondary reference Sasco Inc Canadian Div |
| 2530007368683 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| A19763 | C/1 Advisory reference — outside the item-of-supply concept Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp. |
NSN 3040-00-736-8683 is a Bell Crank, manufactured by Meritor Industrial Products, Llc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-736-8683 has 3 manufacturer part numbers on file: A372U21 (Meritor Industrial Products, Llc), 7368683 (U S Army Tank Automotive Command Amsta-Im-Mm), A372U21 (Meritor Heavy Vehicle Systems, Llc).
Key specifications for A372U21: Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 2.281 INCHES NOMINAL FIRST END IN; Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 9.469 INCHES NOMINAL SECOND END IN; End Hole/ball Diameter: 0.438 INCHES NOMINAL SECOND END IN; End Hole/ball Diameter: 0.995 INCHES NOMINAL FIRST END IN. 9 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.