The Collar,shaft, cataloged under National Stock Number 3040-00-753-8746, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 14 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-753-8746 |
| Primary Part Number | 7538746 |
| Item Name | Collar,shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Surface Finish | 250 MICROINCHES BOTH BEARING FLATS |
| Surface Finish | 250 MICROINCHES INSIDE PERIPHERY |
| Surface Finish | 250 MICROINCHES OUTSIDE PERIPHERY |
| Securing Hole Type and Location | THREADED SINGLE HOLE |
| Radius | 0.062 INCHES NOMINAL IN |
| Style Designator | ROUND W/ SINGLE EDGE |
| Material Document and Classification | QQ-S-634, COMP 1018-CANCELED FED SPEC SINGLE MATERIAL RESPONSE |
| Screw Thread Series Designator and Location | SINGLE HOLE UNIFIED NATIONAL COARSE (UNC) |
| Outside Diameter | 1.975 INCHES MINIMUM AND 1.982 INCHES MAXIMUM IN |
| Nominal Thread Size | 0.250 INCHES SINGLE HOLE IN |
| Securing Hole Quantity | 1 |
| Bore Diameter | 1.2500 INCHES MINIMUM AND 1.2550 INCHES MAXIMUM IN |
| Material | STEEL COMP 1018 |
| Thickness | 0.688 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 |
|---|---|
| 7538746 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 1727P2 | 5/9 Secondary reference Diamond Reo Truck Co |
| 2297680 | 5/9 Secondary reference General Motors Corp |
| 98-1263 | 5/2 Secondary reference U.S. Government activity |
| 2297680 | 3/9 Design control — primary reference Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 |
| 2297680 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| 669700 | 5/9 Secondary reference Sasco Inc Canadian Div |
| 3040007538746 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
NSN 3040-00-753-8746 is a Collar,shaft, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-753-8746 has 1 manufacturer part number on file: 7538746 (U S Army Tank Automotive Command Amsta-Im-Mm).
2 possible matches (shared part number, not a government interchangeability claim): 6810-01-461-4576, 4320-01-508-9832. Verify interchangeability with system specifications before substitution.
Key specifications for 7538746: Surface Finish: 250 MICROINCHES BOTH BEARING FLATS; Surface Finish: 250 MICROINCHES INSIDE PERIPHERY; Surface Finish: 250 MICROINCHES OUTSIDE PERIPHERY; Securing Hole Type and Location: THREADED SINGLE HOLE. 14 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.