The Tester,air Brake, cataloged under National Stock Number 4940-00-264-4012, is classified within Federal Supply Class 4940 (Miscellaneous Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4940-00-264-4012 |
| Item Name | Tester,air Brake |
| FSC / FSG | 4940 / 49 — Miscellaneous Maintenance and Repair Shop Specialized Equipment |
| Status | ACTIVE |
| General Characteristics Item Description | SINGLE FREIGHT CAR TYPE; 70 LB OPERATING AIR PRESSURE; W/FR-2 TYPE HOSE COUPLING; GAGE DATA,DUPLEX AIR TYPE,1 REQUIRED,3-1/2 IN. DIA SIZE,0 TO 160 LB DIAL GRADUATIONS LBS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| N7982 | C/1 Advisory reference — outside the item-of-supply concept Eaton Aerospace, Llc Dba Jackson South |
| N7982 | 5/9 Secondary reference General Signal Corp |
| 660523 | 3/2 Design control — primary reference U.S. Government activity |
| 553852 | 5/9 Secondary reference U.S. Government activity |
| N7982 | 5/9 Secondary reference U.S. Government activity |
NSN 4940-00-264-4012 is a Tester,air Brake, classified under FSC 4940, Miscellaneous Maintenance and Repair Shop Specialized Equipment. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5940-00-873-8253, 5999-01-034-5302. Verify interchangeability with system specifications before substitution.
Key specifications for 4940-00-264-4012: General Characteristics Item Description: SINGLE FREIGHT CAR TYPE; 70 LB OPERATING AIR PRESSURE; W/FR-2 TYPE HOSE COUPLING; GAGE DATA,DUPLEX AIR TYPE,1 REQUIRED,3-1/2 IN. DIA SIZE,0 TO 160 LB DIAL GRADUATIONS LBS. 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.