For ScrewRails® with special journals, or nut, rail or screw modifications:

Kerk will price and machine to your drawings and tolerances. Order by your drawing or part number plus Kerk part number.

For standard configuration ScrewRails®:

Order by Kerk part number.

Examples:

SRA4025T X 12 = ScrewRail® with a standard nut, 3 through-hole flange and 1/4 inch diameter screw (1/2 inch diameter rail) with .250 inch lead, Kerkote® TFE coating and a rail length of 12 inches.

Other options to be specified:

Special nut, rail or screw modifications (drawings required) High lead accuracy - .0003, .0002, .0001 in./in. (mm/mm) Left Hand (LH) or Right Hand/Left Hand (R/L) threads

For applications assistance or order entry, call your local Kerk representative or Kerk direct at 603-465-7227, Fax 603-465-3598.