The Coupling,universal Joint, cataloged under National Stock Number 1680-01-180-1919, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Mistequay Group Ltd. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-01-180-1919 |
| Primary Part Number | T1-98-161X |
| Item Name | Coupling,universal Joint |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Mistequay Group Ltd |
| Status | ACTIVE |
| General Characteristics Item Description | 0.875 IN. LG O/A;25 INTERNAL INVOLUTE SPLINE TEETH W/30.0 DEG PRESSURE ANGLE BY 0.7813 IN. PD BY 0.8125 IN. MAJOR DIA BY 0.750 IN. MINOR DIA BY 0.750 IN. DP;93 EXTERNAL INVOLUTE SPLINE TEETH W/30.0 DEG PRESSURE ANGLE BY 2.9063 IN. PD BY 2.935 IN. MAJOR DIA BY 2.854 IN. MINOR DIA BY 0.500 IN. LG ON ONE END IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| T1-98-161X | Mistequay Group Ltd (USA) |
| T1-98-161X | Con-Vel, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 5902088 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1680-01-180-1919 is a Coupling,universal Joint, manufactured by Mistequay Group Ltd, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-180-1919 has 2 manufacturer part numbers on file: T1-98-161X (Mistequay Group Ltd), T1-98-161X (Con-Vel, Inc.).
Key specifications for T1-98-161X: General Characteristics Item Description: 0.875 IN. LG O/A;25 INTERNAL INVOLUTE SPLINE TEETH W/30.0 DEG PRESSURE ANGLE BY 0.7813 IN. PD BY 0.8125 IN. MAJOR DIA BY 0.750 IN. MINOR DIA BY 0.750 IN. DP;93 EXTERNAL INVOLUTE SPLINE TEETH W/30.0 DEG PRESSURE ANGLE BY 2.9063 IN. PD BY 2.935 IN. MAJOR DIA BY 2.854 IN. MINOR DIA BY 0.500 IN. LG ON ONE END IN; End Item Identification: B-1B ACFT. 1 specification is 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.
NSN 1680-01-180-1919 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.