These double claw clamps follow International Standards Organization (ISO) standards and fit flange sizes of NW-63, NW-80, & NW-100. ISO flanged vacuum fittings are commonly used to build process vacuum plumbing and systems for industrial applications. The fittings are quick to assemble using double claw clamps and a centering ring. The Viton? centering ring contains a rubber/elastomeric o-ring. The ISO standard sizes for large flanges are NW-63, NW-80, NW-100, NW-160, NW-200, NW-250, NW-320, NW-400, NW-500, NW-630. These clamps are made of aluminum.

Double Claw Clamp, Fits ISO NW-63, NW-80, & NW-100 Vacuum Flanges, Aluminum 

Metric 8X45L Bolt

Fits ISO-LF Flange Sizes: NW-63, NW-80, & NW-100

Common Dimensions: A = 0.9375" (24mm), B = 1.9375" (50mm), C = 0.625 (16mm)