The Adapter,self Test, cataloged under National Stock Number 4920-00-451-0654, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Williamsrdm, Inc.. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Adapter,self Test |
| FSC / FSG | 4920 — Aircraft Maintenance and Repair Shop Specialized Equipment (FSG 49) |
| Manufacturers | Williamsrdm, Inc. (CAGE 27899) |
| Parameter | Value |
|---|---|
| NSN | 4920-00-451-0654 |
| Primary Part Number | WIFW57-1 |
| Item Name | Adapter,self Test |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Williamsrdm, 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 |
|---|---|
| WIFW57-1 PRIMARY | Williamsrdm, Inc. (USA) |
| Reference | Meaning |
|---|---|
| C6857-1 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 4920-00-451-0654 is a Adapter,self Test, manufactured by Williamsrdm, Inc., classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-00-451-0654 has 1 manufacturer part number on file: WIFW57-1 (Williamsrdm, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 2040-00-949-8418. Verify interchangeability with system specifications before substitution.
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 4920-00-451-0654 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.