The Cleaning Kit,spray, cataloged under National Stock Number 4940-01-527-7091, 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 Spray Gun Solutions Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4940-01-527-7091 |
| Primary Part Number | MK21 |
| Item Name | Cleaning Kit,spray |
| FSC / FSG | 4940 / 49 — Miscellaneous Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Spray Gun Solutions Inc |
| Status | ACTIVE |
| General Characteristics Item Description | USED FOR CLEANING PAINT SPRAY GUNS; KIT INCLUDES NEEDLE SET, MINI BRUSH SET, CAVITY BRUSH, END BRUSH, TUBE BRUSH, HVLP BRUSH, TAPERED BRUSH, NYLON GP BRUSH, SGS SPRAY GUN PICK, AND SPRAY GUN LUBE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4940-01-527-7091 is a Cleaning Kit,spray, manufactured by Spray Gun Solutions Inc, classified under FSC 4940, Miscellaneous Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4940-01-527-7091 has 2 manufacturer part numbers on file: MK21 (Spray Gun Solutions Inc), 91-470 (Aom Canada).
1 possible match (shared part number, not a government interchangeability claim): 5930-01-722-9901. Verify interchangeability with system specifications before substitution.
Key specifications for MK21: General Characteristics Item Description: USED FOR CLEANING PAINT SPRAY GUNS; KIT INCLUDES NEEDLE SET, MINI BRUSH SET, CAVITY BRUSH, END BRUSH, TUBE BRUSH, HVLP BRUSH, TAPERED BRUSH, NYLON GP BRUSH, SGS SPRAY GUN PICK, AND SPRAY GUN LUBE; Part Name Assigned by Controlling Agency: MASTER BRUSH KIT. 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.