The Tester,hydraulic Systems, cataloged under National Stock Number 4940-00-753-5142, 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 Schroeder Industries Llc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4940-00-753-5142 |
| Primary Part Number | ET-100-6 |
| Item Name | Tester,hydraulic Systems |
| FSC / FSG | 4940 / 49 — Miscellaneous Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Schroeder Industries Llc |
| Status | ACTIVE |
| General Characteristics Item Description | A PORTABLE HYDRAULIC CIRCUIT TESTER,IT CONNECTS DIRECTLY INTO THEHYDRAULIC CIRCUIT TO LOCATE SUCTION PROBLEMS,FAUTLY PUMPS,CYLINDERS ANDVALVES,ALSO USED FOR FIELD TROUBLESHOOTING |
| 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 |
|---|---|
| ET-100-6 PRIMARY | Schroeder Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| PHT-100-3 | 5/9 Secondary reference Schroeder Industries Llc |
| PT100C | 5/9 Secondary reference Schroeder Industries Llc |
NSN 4940-00-753-5142 is a Tester,hydraulic Systems, manufactured by Schroeder Industries Llc, classified under FSC 4940, Miscellaneous Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4940-00-753-5142 has 1 manufacturer part number on file: ET-100-6 (Schroeder Industries Llc).
1 possible match (shared part number, not a government interchangeability claim): 4510-01-431-9357. Verify interchangeability with system specifications before substitution.
Key specifications for ET-100-6: General Characteristics Item Description: A PORTABLE HYDRAULIC CIRCUIT TESTER,IT CONNECTS DIRECTLY INTO THEHYDRAULIC CIRCUIT TO LOCATE SUCTION PROBLEMS,FAUTLY PUMPS,CYLINDERS ANDVALVES,ALSO USED FOR FIELD TROUBLESHOOTING; Part Name Assigned by Controlling Agency: TESTER, HYDRAULIC SYSTEM. 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.