These single 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 single 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.

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

Standard 5/16inch -18 Bolt 

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

Common Dimensions: A = 0.9375" (24.10mm), B = 0.9375" (22.50mm),