The Tank,pressure-Feed,finishing-Mat, cataloged under National Stock Number 4940-00-251-6478, 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 20 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4940-00-251-6478 |
| Item Name | Tank,pressure-Feed,finishing-Mat |
| FSC / FSG | 4940 / 49 — Miscellaneous Maintenance and Repair Shop Specialized Equipment |
| Status | ACTIVE |
| Outlet Thread Size | 1/4-18 |
| Liquid Capacity | 2.0 GALLONS |
| Design Type | PRESSURE-REGULATOR |
| Outlet Quantity | 1 OR 2 |
| Coating Method | PLATED LID |
| Inlet Quantity | 1 |
| Handle | FURNISHED |
| Inlet Screw Thread Series Designator | NPS |
| Operating Pressure | 110.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Outlet Type | AIR OR FLUID |
| Outlet Location | TOP |
| Accessory Components and Quantity | GAGE,ATOMIZING PRESSURE 1;GAGE,TANK PRESSURE 1;REGULATOR,ATOMIZING PRESSURE 1;REGULATOR,MATERIAL FLOW PRESSURE 1;STRAINER,AIR 1;STRAINER,MATERIAL 1;VALVE RELIEF 1;VALVE SAFETY,110 PSI 1 |
| Nondefinitive Spec/std Data | 2 TYPE AND 1 SIZE |
| Outlet Screw Thread Series Designator | N0NE |
| Agitator Operation Method | AIR MOTOR DRIVEN |
| Inlet Thread Size | 1/4-18 |
| Surface Treatment | CADMIUM AND ZINC LID |
| Lid Securing Method | FULL OPENING CLAMP |
| Paddle Maximum Speed in RPM | 50.0 |
| Maximum Air Consumption | 8.0 CUBIC FEET PER MINUTE |
| 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 |
|---|---|
| RR-C-550 | 4/1 Identification reference U.S. Government activity |
| PQM5504-4 | 5/9 Secondary reference Illinois Tool Works Inc. |
| QMGT-5211 | 5/1 Secondary reference Illinois Tool Works Inc. |
| RRC550TY2SIZE1 | 5/9 Secondary reference U.S. Government activity |
| RRC550-TYPE2-SIZE1 | 2/2 Government specification standardization U.S. Government activity |
NSN 4940-00-251-6478 is a Tank,pressure-Feed,finishing-Mat, classified under FSC 4940, Miscellaneous Maintenance and Repair Shop Specialized Equipment. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4940-00-541-9398, 4940-00-542-4846. Verify interchangeability with system specifications before substitution.
Key specifications for 4940-00-251-6478: Outlet Thread Size: 1/4-18; Liquid Capacity: 2.0 GALLONS; Design Type: PRESSURE-REGULATOR; Outlet Quantity: 1 OR 2. 20 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.