The Tensioner,idler, cataloged under National Stock Number 4130-01-221-0046, is classified within Federal Supply Class 4130 (Refrigeration and Air Conditioning Components) of the Refrigeration, AC, and Air Circulating Equipment group. The manufacturer of record is Drs Environmental Systems Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4130-01-221-0046 |
| Primary Part Number | 11780-1 |
| Item Name | Tensioner,idler |
| FSC / FSG | 4130 / 41 — Refrigeration and Air Conditioning Components |
| Manufacturer | Drs Environmental Systems Inc |
| Status | ACTIVE |
| General Characteristics Item Description | LENGTH 16.00,WIDTH 4.38,BRACKET WIDTH 2.38,BRACKET THICKNESS .81,COLLAR LENGTH 8.00,COLLAR WIDTH 1.25,MAX BEARING SURFACE 3.50,BEARING DIA. 1.00 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4130-01-221-0046 is a Tensioner,idler, manufactured by Drs Environmental Systems Inc, classified under FSC 4130, Refrigeration and Air Conditioning Components. Status: active.
NSN 4130-01-221-0046 has 2 manufacturer part numbers on file: HLSO-4 (Brewer Machine & Gear Co), 11780-1 (Drs Environmental Systems Inc).
Key specifications for 11780-1: General Characteristics Item Description: LENGTH 16.00,WIDTH 4.38,BRACKET WIDTH 2.38,BRACKET THICKNESS .81,COLLAR LENGTH 8.00,COLLAR WIDTH 1.25,MAX BEARING SURFACE 3.50,BEARING DIA. 1.00; End Item Identification: 4120011549127,MA-3 AIR CONDITIONER. 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.