The Ring Coupling,shaft, cataloged under National Stock Number 1650-00-698-0618, is classified within Federal Supply Class 1650 (Aircraft Hydraulic, Vacuum, and De-icing System Components) of the Aircraft Components and Accessories group. The manufacturer of record is General Electric Company. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-00-698-0618 |
| Primary Part Number | 187B851-1 |
| Item Name | Ring Coupling,shaft |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL; 2.510 IN. OD; 1.040 IN. ID; 0.323 IN. THK; FOUR SLOTS EQUALLY SPACED ALONG OUTER PERIPHERY 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 |
|---|---|
| 187B851-1 PRIMARY | General Electric Company (USA) |
| 187B851PT1 PRIMARY | General Electric Company (USA) |
| 187B851P1 PRIMARY | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| 187B851P1 | 3/2 Design control — primary reference U.S. Government activity |
| 187B851-1 | 3/2 Design control — primary reference U.S. Government activity |
| 187B851 | D/9 Drawing number reference only U.S. Government activity |
| 187B851PT1 | 3/2 Design control — primary reference U.S. Government activity |
| 187B851P1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1650-00-698-0618 is a Ring Coupling,shaft, manufactured by General Electric Company, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-00-698-0618 has 3 manufacturer part numbers on file: 187B851-1 (General Electric Company), 187B851PT1 (General Electric Company), 187B851P1 (General Electric Company).
Key specifications for 187B851-1: General Characteristics Item Description: STEEL; 2.510 IN. OD; 1.040 IN. ID; 0.323 IN. THK; FOUR SLOTS EQUALLY SPACED ALONG OUTER PERIPHERY IN. 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.
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.