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Thumb Screws allow for simple "by-hand" installation
Stainless Steel is suitable where formability and cost are important considerations
Knurled head provides extra grip for manual tightening
Tools not necessary for tightening or loosening
Coarse threads are better for brittle materials, and will assemble and disassemble more quickly than fine threads
Thumb screws are designed to be tightened and loosened by hand. They come in a variety of head styles, but each includes an easy-grip head which allows for simple "by-hand" installation.
Stainless steels are used for their corrosion resistance, high-temperature strength, scaling resistance, and low-temperature toughness. These properties account for their extremely wide use in practically every industry. Austenitic Stainless Steels are alloys of iron and carbon that contain between 16% and 30% Chromium, a maximum of 0.15% carbon, along with Nickel (or Manganese), and other alloying elements. The chromium, which helps develop a passive surface oxide film, provides corrosion resistance in stainless steels. Austenitic Stainless Steels are designated by a 3 digit SAE Stainless Steel Grade beginning with the number 3 (e.g. 304, 316). Another common naming convention for Austenitic Stainless Steels are 18/8, 18/10, 18/0, etc. where the 18 refers to the % of Chromium and 8 to the % of Nickel contained in the material.
Usually found on thumb screws, a knurled surface on the head gives a better gripping surface, making it easier to tighten or loosen fasteners manually.
A threaded fastener's size name includes information about the major external diameter, followed by the threads per inch, which indicates if it is coarse or fine. Coarse threads are better when working with brittle materials; they are sturdier and are easier to thread and unthread compared to fine. Coarse threading also allows for thicker coatings and platings.
7/16 inches Head diameter , 5/8 inches Length, 5/16 inches Head height#8-32 Thread size
Most Helpful Customer Reviews
I ordered this items twice and both times received an item that did not match the description. The item number I received was correct for the order, but the screws in the packet did not have the dimensions listed in the title. They were 1.5" long vs 1".
while quality and price were good, the items i received were NOT SHOULDERED thumb-screws like the picture. a small but important difference. a replacement item was the same. clearly amazon has the wrong picture.
The photo shows a washered thumb screw, which is what I expected to receive. What I received is a plain thumb screw with no washer and does not work very well in my application. To bad the photo doesn't match the item you are selling.
The authorised South African distributor of this product is under no obligation to honour the manufacture's guarantees/warranties or to provide after-sales service.
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