KERK® LEAD SCREWS Size List KERK® brand lead screws utilize the latest in precision rolling technology.  Lead screws are available in standard diameters from 1/8" to 15/16" and includes metric and left hand threads.  Most standard lead screws are manufactured from 303 stainless steel and are produced using Haydon Kerk Motion Solutions exclusive precision rolling process.  Other lead screw materials are available for application-specific requirements.

1/8" (3.2mm) lead screw  0.132" (3.3 mm) lead screw  9/64" (3.6 mm) lead screw  5/32" (4 mm) lead screw 3/16" (5 mm) lead screw 7/32" (5.6 mm) lead screw 1/4" (6 mm) lead screw 5/16" (8 mm) lead screw 3/8" (10 mm) lead screw 7/16" (11 mm) lead screw 1/2" (13 mm) lead screw 5/8" (16 mm) lead screw 3/4" (19 mm) lead screw 7/8" (22 mm) lead screw 15/16" (24 mm) lead screw