The Lock Plate,duct Retaining, cataloged under National Stock Number 4520-00-607-6422, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-00-607-6422 |
| Item Name | Lock Plate,duct Retaining |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL; CADMIUM DICHROMATE PLATED; O/A DIM.,2.766 IN. LG,1.016 IN. W,0.312 IN. THK; W/THRU HOLE 0.156 IN. ID,THD 0.164 IN.-32 UNC,0.375 IN. THD LG ON ONE END LOCATED 1.688 IN. FROM TOP END TO HOLE CENTER; W/DRILLED HOLE,0.219 IN. ID BY 1.719 IN. DEEP,TOP LOCATED 0.500 IN. FROM ONE SIDE TO HOLE CENTER IN |
| 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 |
|---|---|
| TC821 | 5/2 Secondary reference U.S. Government activity |
| TC821 | 3/9 Design control — primary reference U.S. Government activity |
| TC821 | 5/9 Secondary reference Drs Environmental Systems Inc |
NSN 4520-00-607-6422 is a Lock Plate,duct Retaining, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
Key specifications for 4520-00-607-6422: General Characteristics Item Description: STEEL; CADMIUM DICHROMATE PLATED; O/A DIM.,2.766 IN. LG,1.016 IN. W,0.312 IN. THK; W/THRU HOLE 0.156 IN. ID,THD 0.164 IN.-32 UNC,0.375 IN. THD LG ON ONE END LOCATED 1.688 IN. FROM TOP END TO HOLE CENTER; W/DRILLED HOLE,0.219 IN. ID BY 1.719 IN. DEEP,TOP LOCATED 0.500 IN. FROM ONE SIDE TO HOLE CENTER IN. 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.