The Spacer Block,tow Hook Winch, cataloged under National Stock Number 1680-00-159-0835, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-00-159-0835 |
| Primary Part Number | 65850-05173-042 |
| Item Name | Spacer Block,tow Hook Winch |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY,5.999 IN. MIN,6.001 IN. MAX LG,4.750 IN. W,0.840 IN. H 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 |
|---|---|
| 65850-05173-042 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| 65850-05173-042 | Danko Arlington, Inc. Dba Danko Arlington Inc (USA) |
| 65850-05173-042 | Aero Components, Llc (USA) |
| 65850-05173-042 | Aerometals, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 65850-05173-042 | 5/9 Secondary reference W and G Machine Company, Incorporated |
| 65850-05173-042 | 5/9 Secondary reference Rotair Aerospace Corp |
NSN 1680-00-159-0835 is a Spacer Block,tow Hook Winch, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-00-159-0835 has 4 manufacturer part numbers on file: 65850-05173-042 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 65850-05173-042 (Danko Arlington, Inc. Dba Danko Arlington Inc), 65850-05173-042 (Aero Components, Llc), 65850-05173-042 (Aerometals, Inc.).
Key specifications for 65850-05173-042: General Characteristics Item Description: ALUMINUM ALLOY,5.999 IN. MIN,6.001 IN. MAX LG,4.750 IN. W,0.840 IN. H 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.
NSN 1680-00-159-0835 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.