The Adapter,mechanical Test, cataloged under National Stock Number 4940-01-643-3981, is classified within Federal Supply Class 4940 (Miscellaneous Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Tifco Industries, Inc. Dba Tifco Industries 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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,mechanical Test |
| FSC / FSG | 4940 — Miscellaneous Maintenance and Repair Shop Specialized Equipment (FSG 49) |
| Manufacturers | Tifco Industries, Inc. Dba Tifco Industries Inc (CAGE 0BPN7) |
| Parameter | Value |
|---|---|
| NSN | 4940-01-643-3981 |
| Primary Part Number | 79928 |
| Item Name | Adapter,mechanical Test |
| FSC / FSG | 4940 / 49 — Miscellaneous Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Tifco Industries, Inc. Dba Tifco Industries Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| 79928 PRIMARY | Tifco Industries, Inc. Dba Tifco Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 10013B2015 | 7/2 Vendor item drawing reference Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service |
NSN 4940-01-643-3981 is a Adapter,mechanical Test, manufactured by Tifco Industries, Inc. Dba Tifco Industries Inc, classified under FSC 4940, Miscellaneous Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4940-01-643-3981 has 1 manufacturer part number on file: 79928 (Tifco Industries, Inc. Dba Tifco Industries Inc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-722-0637. 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.
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.