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The steel thread rolling screw for use in metal has a black oxide finish and an 82-degree flat head with a Phillips drive. Steel is often used in applications where strength is the primary consideration. The black oxide finish offers mild corrosion resistance and lubricity. The flat head has an 82-degree cone-shaped bearing surface for use in countersunk holes and a flat top that fits flush with the mated surface. The Phillips drive has an x-shaped slot that accepts a Phillips driver and is designed to allow the driver to slip out of the head to help prevent over-tightening and damage to the thread or fastener.
Thread cutting and thread rolling screws, two types of self-tapping screws, are threaded fasteners that create a mating thread in the wall of a hole. The two screws differ from each other in the way that they create the threads. Thread cutting screws cut the wall of the hole to create the thread, creating material chips that need to be cleared away from the hole to prevent clogging. Thread rolling screws, also called thread forming screws, do not remove material but instead press against the wall of the hole to displace the material and form the threads.
Amanda
Reviewed in the United States on August 13, 2024
Fits great for my 500 series units that have countersunk holes, if your units don't have countersunk holes then these screws won't sit flush.
Tech Doc
Reviewed in the United States on July 24, 2023
Good product bought several times in past.
Customer
Reviewed in Canada on December 23, 2022
Purchased these for my 500 Series rack (Cranborne audio adat 500) worked great, way cheaper then other 500 series specific screws
Rightful Liberty
Reviewed in the United States on January 17, 2022
Great for the price.
Studem Business Inc.
Reviewed in the United States on August 5, 2021
Super
Adrien Barat
Reviewed in the United States on February 12, 2021
Good screws
CS
Reviewed in the United States on December 4, 2020
I used these to screw in some mic preamps in a 500 series rack. Worked great, looks nice, can't complain.
David M. Delbridge
Reviewed in the United States on March 24, 2017
I purchased these screws for installation of various 500 Series audio processing modules in API 500V rack frames. They work perfectly for this task and, in black, afford any recording studio a clean, professional appearance.To be clear, these are flat head screws. If you prefer the slightly rounded, "oval head" variety that are also popular in 500 Series frames, keep shopping (and good luck).
Maddog
Reviewed in the United States on March 5, 2016
Its a black screw. What can I say.
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