The Coupling Half,shaft, cataloged under National Stock Number 3010-00-077-1878, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) 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 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3010-00-077-1878 |
| Primary Part Number | 11621139 |
| Item Name | Coupling Half,shaft |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Body Style | JAW TYPE |
| Material Document and Classification | QQ-S-624 COMP FS 4140 FED SPEC SINGLE MATERIAL RESPONSE OR SAE 4140H ASSN STD SINGLE MATERIAL RESPONSE |
| Spline Major Diameter | 1.783 INCHES MINIMUM AND 1.788 INCHES MAXIMUM IN |
| Outside Diameter | 2.938 INCHES NOMINAL IN |
| Bore Shape | SPLINED |
| Spline Quantity | 6 |
| Material | STEEL |
| 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 |
|---|---|
| 11621139 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 3040000771878 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 2848N196 | 5/9 Secondary reference Meritor Heavy Vehicle Systems, Llc |
NSN 3010-00-077-1878 is a Coupling Half,shaft, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-00-077-1878 has 1 manufacturer part number on file: 11621139 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 11621139: Body Style: JAW TYPE; Material Document and Classification: QQ-S-624 COMP FS 4140 FED SPEC SINGLE MATERIAL RESPONSE OR SAE 4140H ASSN STD SINGLE MATERIAL RESPONSE; Overall Length: 1.516 INCHES NOMINAL IN; Spline Major Diameter: 1.783 INCHES MINIMUM AND 1.788 INCHES MAXIMUM IN. 7 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.