Buy Stainless Steel Thumb Screw, Knurled HeadStainless Steel Thumb Screw, Knurled Head Product Description:
- 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
Product Description
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.
Customer Reviews
Most helpful customer reviews
1 of 1 people found the following review helpful.
Did not match description
By Gareth H. Richards
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".
1 of 1 people found the following review helpful.
Thumbscrew Review
By Nevermoor
Product was fairly priced. Quick ship. Just as promised. Thank you. Would do business again with that seller.
0 of 0 people found the following review helpful.
Just what I needed
By Nathan Barrett
Bought four of these to replace the screws on both of my pool pump timer boxes. Now I can change the on and off times with my fingers instead of having to grab a tool.
Latest Price: See on Amazon.com!
More Info: See on Amazon.com!
See Customers Review: See on Amazon.com!









