The Clamp Block,line,hy, cataloged under National Stock Number 1650-01-171-3874, 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 Tsi Plastics, Inc. Dba Tsi Plastics Inc. The record lists 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Clamp Block,line,hy |
| FSC / FSG | 1650 — Aircraft Hydraulic, Vacuum, and De-icing System Components (FSG 16) |
| Manufacturers | Tsi Plastics, Inc. Dba Tsi Plastics Inc (CAGE 65445); The Boeing Company (CAGE 8V613) |
| Parameter | Value |
|---|---|
| NSN | 1650-01-171-3874 |
| Primary Part Number | 7-211830053-3 |
| Item Name | Clamp Block,line,hy |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Tsi Plastics, Inc. Dba Tsi Plastics Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 7-211830053-3 | Tsi Plastics, Inc. Dba Tsi Plastics Inc (USA) |
| 7-211830053-3 | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| TA15LS83 | 3/2 Design control — primary reference U.S. Government activity |
| 7-211830053-3 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 1650-01-171-3874 is a Clamp Block,line,hy, manufactured by Tsi Plastics, Inc. Dba Tsi Plastics Inc, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-01-171-3874 has 2 manufacturer part numbers on file: 7-211830053-3 (Tsi Plastics, Inc. Dba Tsi Plastics Inc), 7-211830053-3 (The Boeing Company).
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 1650-01-171-3874 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.