The Ring,meter Calibration, cataloged under National Stock Number 6625-00-643-1855, is classified within Federal Supply Class 6625 (Electrical and Electronic Properties Measuring and Testing Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6625-00-643-1855 |
| Item Name | Ring,meter Calibration |
| FSC / FSG | 6625 / 66 — Electrical and Electronic Properties Measuring and Testing Instruments |
| Status | ACTIVE |
| Shape | ROUND |
| Outside Diameter | 1.375 INCHES NOMINAL IN |
| Surface Treatment | OXIDE LIGHT BAFFLE |
| Mounting Configuration | 3 L-SHAPED SPRING CLIPS,TWO NO. 2-56 BY 5/16 IN. LG BINDING HEAD MACHINE SCREWS SPACED 1 IN. C TO C IN |
| Material | GLASS AND PLASTIC PHENOLIC AND COPPER ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Unit of Issue | EA |
| Acquisition advice code | J |
| Weight | 0.0100 lbs |
| Cube | 0.0010 cu ft |
| Reference | Meaning |
|---|---|
| GA468 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6625-00-643-1855 is a Ring,meter Calibration, classified under FSC 6625, Electrical and Electronic Properties Measuring and Testing Instruments. Status: active.
Key specifications for 6625-00-643-1855: Shape: ROUND; Outside Diameter: 1.375 INCHES NOMINAL IN; Surface Treatment: OXIDE LIGHT BAFFLE; Mounting Configuration: 3 L-SHAPED SPRING CLIPS,TWO NO. 2-56 BY 5/16 IN. LG BINDING HEAD MACHINE SCREWS SPACED 1 IN. C TO C IN. 5 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.