[ Shear-Loc Main page ] [ Thumb Screw Knobs Only ] [ Thumb Screws ] [ Knob Kits ] [ FAQ ] [  What's New/ Etc. ] [ Thumb Nuts ] Shear-Loc What's New/ Etc.

Thumb Nuts A new line of thumb nuts with an internal female thread can be used alone or in conjunction with the existing thumbscrew line, creating a thumbscrew with a check nut. The knob portion of the Thumb Nut Series is in the round-knurled style with diameters matching existing product lines. Custom-made 2024 aluminum-threaded bushings are inserted into plastic knobs, creating a thumbscrew with internal threads. The Thumb Nuts are available in nine thread sizes from 4 - 40 to 5/16 - 24. The plastic knob currently comes in black with red, gray, and yellow to be available soon Thumbscrews With hex key drive Featuring a hex key drive that gives the user a dual locking and adjustment system, the Key Drive Series thumbscrews has a hex equivalent to that of a standard socket head cap screw. This allows for installation without any special tools needed. The knob portion of the thumbscrew is in the round knurled style with diameters that match those of the company's existing product line. The products are available in nine screw sizes, ranging from 4-40 to 5/16-24 and in 7 standard screw lengths. * Zinc  / Think Stainless. Zinc and cad electroplated socket head cap screws have always had two inherent problems which are hydrogen embrittlement and the possibility of the class 3A thread diameter exceeding gage limits. You should always take in consideration that when a screw is plated that its pitch diameter will be increased by approximately 4 times the plating thickness. ( .0002" = .0008" ). To eliminate both of the above potential problems let us quote and furnish samples of our standard stainless screw line. For more information call 800-638-1830. New / UV Stable Color     Shear-Loc may soon offer black UV light stable knobs. We are now in the testing stage on such a material and will let you know via this what's new/etc. web page when ready. Call 800-638-1830 for progress. Technical / # 12-24 and 12-28 Thumbscrews.     On occasion we get requests for knobs to fit #12 socket head cap screws, This is possible using one of our standard size knobs but they require special handling. Call 800-638-1830 for details. Technical / Specials    We can also help you with engineering support on how to use standard Shear-Loc knobs on special machined parts and 3/8 diameter socket head shoulder screws. Call 800-638-1830 for technical aid. P/S     Don't forget to test before you invest. Just call 800-638-1830 and we'll be glad to furnish samples to qualified buyers for testing.

Knobs Manufactured in the U.S.A. by: Shear-Loc Products under USA patent no. 5,017,068 and E.U. patent 0551295