The Control,directional Signal Arm, cataloged under National Stock Number 2540-01-159-5670, is classified within Federal Supply Class 2540 (Vehicular Furniture and Accessories) of the Vehicular Equipment Components group. The manufacturer of record is Linear Motion Llc Div Ugm. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Item Name | Control,directional Signal Arm |
| FSC / FSG | 2540 — Vehicular Furniture and Accessories (FSG 25) |
| Manufacturers | Linear Motion Llc Div Ugm (CAGE 0A335); General Motors Llc Dba General Motors Llc (CAGE 7X677) |
| Parameter | Value |
|---|---|
| NSN | 2540-01-159-5670 |
| Primary Part Number | 1997983 |
| Item Name | Control,directional Signal Arm |
| FSC / FSG | 2540 / 25 — Vehicular Furniture and Accessories |
| Manufacturer | Linear Motion Llc Div Ugm |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 1997983 PRIMARY | Linear Motion Llc Div Ugm (USA) |
| 1997988 | General Motors Llc Dba General Motors Llc (USA) |
| Reference | Meaning |
|---|---|
| 1997988 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
| 1997983 | 5/9 Secondary reference General Motors Corp Saginaw Div |
| D6222 | 3/9 Design control — primary reference General Motors Corp Delco Products Div Machine Control Systems |
| 1997983 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
NSN 2540-01-159-5670 is a Control,directional Signal Arm, manufactured by Linear Motion Llc Div Ugm, classified under FSC 2540, Vehicular Furniture and Accessories. Status: active.
NSN 2540-01-159-5670 has 2 manufacturer part numbers on file: 1997983 (Linear Motion Llc Div Ugm), 1997988 (General Motors Llc Dba General Motors Llc).
Possible hazard — SDS may be required (DLA HMIC P). 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.