The Collar,shaft, cataloged under National Stock Number 3040-00-692-6121, 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 8 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-00-692-6121 |
| Primary Part Number | 8758217 |
| Item Name | Collar,shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Largest Diameter Length | 0.219 INCHES NOMINAL IN |
| Style Designator | ROUND W/SINGLE CHAMFER |
| Material Document and Classification | QQ-S-631-CANCELED FED SPEC 2ND MATERIAL RESPONSE |
| Outside Diameter | 3.875 INCHES NOMINAL IN |
| Chamfer Angle in Deg | 25.0 |
| Bore Diameter | 3.3910 INCHES NOMINAL IN |
| Material | STEEL OR STEEL COMP 1008 OR STEEL COMP 1010 OR STEEL COMP 1012 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL COMP 1023 OR STEEL COMP 1025 OR STEEL COMP 1026 OR STEEL COMP 1029 OR STEEL COMP 1030 OR STEEL COMP 1035 OR STEEL COMP 1536 OR STEEL COMP 1037 OR STEEL COMP 1038 OR STEEL COMP 1040 OR STEEL COMP 1541 OR STEEL COMP 1042 OR STEEL COMP 1043 OR STEEL COMP 1045 OR STEEL COMP 1046 OR STEEL COMP 1548 OR STEEL COMP 1049 OR STEEL COMP 1050 OR STEEL COMP 1060 OR STEEL COMP 1080 OR STEEL COMP 1090 OR STEEL COMP 1095 |
| Thickness | 0.375 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 |
|---|---|
| 8758217 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 2803R1578 | Meritor Heavy Vehicle Systems, Llc (USA) |
| 2803R1578 | Meritor Industrial Products, Llc (USA) |
| 8331551 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 8758209 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
| 2803S1449 | 5/9 Secondary reference Meritor Heavy Vehicle Systems, Llc |
NSN 3040-00-692-6121 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 3040-00-692-6121 has 4 manufacturer part numbers on file: 8758217 (U S Army Tank Automotive Command Amsta-Im-Mm), 2803R1578 (Meritor Heavy Vehicle Systems, Llc), 2803R1578 (Meritor Industrial Products, Llc), 8331551 (U S Army Tank Automotive Command Amsta-Im-Mm).
2 possible matches (shared part number, not a government interchangeability claim): 3040-00-692-6123, 3120-00-692-6124. Verify interchangeability with system specifications before substitution.
Key specifications for 8758217: Largest Diameter Length: 0.219 INCHES NOMINAL IN; Style Designator: ROUND W/SINGLE CHAMFER; Material Document and Classification: QQ-S-631-CANCELED FED SPEC 2ND MATERIAL RESPONSE; Outside Diameter: 3.875 INCHES NOMINAL IN. 8 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.