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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
Fine threads tap better into harder materials and thin walls, and are stronger in tension than coarse 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. Fine threads are preferable when working with harder materials or when threading into a thin material. They are also stronger in tension than coarse threads, and generally provide higher shear strengths.
3/4 inches Head diameter , 3/4 inches Length, 3/16 inches Head height#10-32 Thread size
Most Helpful Customer Reviews
This does not look anything like the product that was shipped to me. Here is what you get. The screw I was replacing had a tension spring. Now the spring goes all the way in to the knurled part and is not effective. What a disappointment!
The screws arrived exactly as described in the CAD diagrams and appear to be good quality items. The problem is that the main page makes it very difficult to find the right item: a variety of shapes are all listed with the same specification. You have to find all lines matching the general description of your screw, click on each line to bring up a new page, then click on the "Downloads CA Models, MSDS, Manuals" box on the left-hand side of the page and download the CAD diagram (I used 2D PDF) in which measurement of head size and actual length are clearly marked (and it becomes clear that "Overall Length" means the length of the screw excluding the head).
The screws that were delivered are a different style than those pictured. I ordered these to attach the resonator on a banjo, the screws that are pictured are just what I was looking for. The ones that I received have the correct thread, but they have a long thin knurled top, not like the one pictured.
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Please note that this item is imported from the USA, and is designed to be used in the USA. In addition, if the unit is powered it will come with a US plug and an adapter/transformer may be required. Please click here for more information on power requirements, or check with us if you are unsure or need any assistance!
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