The Hose,preformed, cataloged under National Stock Number 4720-00-494-9388, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Gates Corporation. Government technical data includes 10 specifications, 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through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-00-494-9388 |
| Primary Part Number | 20543 |
| Item Name | Hose,preformed |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Gates Corporation |
| Status | ACTIVE |
| Outer Radius | 3.250 INCHES NOMINAL IN |
| Style Designator | TWO BENDS" |
| Wall Thickness | 0.188 INCHES NOMINAL IN |
| Inside Diameter | 1.250 INCHES NOMINAL IN |
| Material | RUBBER SYNTHETIC COVER |
| Material | RUBBER SYNTHETIC OVERALL |
| Bend Radius | 3.250 INCHES NOMINAL IN |
| Second Arm Length | 3.000 INCHES NOMINAL IN |
| Working Length | 17.000 INCHES NOMINAL IN |
| First Arm Length | 4.000 INCHES NOMINAL 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 |
|---|---|
| 20543 PRIMARY | Gates Corporation (USA) |
| 21087 PRIMARY | Gates Corporation (USA) |
| 3906437 PRIMARY | General Motors Llc Dba General Motors Llc (USA) |
| MH496 PRIMARY | Contitech Usa, Inc Dba Veyance Technologies (USA) |
| Reference | Meaning |
|---|---|
| MH496 | 5/9 Secondary reference Goodyear Tire and Rubber Co the |
| 1366382 | 5/9 Secondary reference General Motors Corp |
| CH543 | 5/9 Secondary reference Gates Corporation |
| 3898542 | 5/9 Secondary reference General Motors Corp |
| MR747 | 5/9 Secondary reference Pirelli Power Transmission Corp |
| 1374252 | 5/9 Secondary reference General Motors Corp |
| 70485 | 5/9 Secondary reference Dayco Products Llc |
| 3906437 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
| CH485 | 5/9 Secondary reference U.S. Government activity |
NSN 4720-00-494-9388 is a Hose,preformed, manufactured by Gates Corporation, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-00-494-9388 has 4 manufacturer part numbers on file: 20543 (Gates Corporation), 21087 (Gates Corporation), 3906437 (General Motors Llc Dba General Motors Llc), MH496 (Contitech Usa, Inc Dba Veyance Technologies).
8 possible matches (shared part number, not a government interchangeability claim): 5330-00-506-1099, 3655-00-861-6805, 5985-00-975-3679. Verify interchangeability with system specifications before substitution.
Key specifications for 20543: Outer Radius: 3.250 INCHES NOMINAL IN; Style Designator: TWO BENDS"; Wall Thickness: 0.188 INCHES NOMINAL IN; Inside Diameter: 1.250 INCHES NOMINAL IN. 10 specifications are 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.