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The steel thread cutting screw has a zinc plating, a Type F point style, and a hex washer head with a slotted drive. The type F point is suitable for heavy gauge sheet metal, aluminum, cast iron, brass, and plastic. The screw has machine screw threads that taper down to a blunt point with multiple cutting edges and chip cavities. Steel is often used in applications where strength is the primary consideration. The zinc plating offers corrosion resistance and has a reflective appearance. The hex washer head has six flat sides that a wrench can grip to turn from the side, enabling use when there is no space above the head for a screwdriver. The flange acts like a washer to increase the fastener's bearing surface and distribute the clamping force over a larger area, providing grip and reducing damage to mating surfaces. The slotted drive has a linear slot for use with a flat-blade driver.
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.
Leonard
Reviewed in the United States on September 30, 2024
Works great
william fagan
Reviewed in the United States on October 22, 2024
ok
Icy Air Systems LLC
Reviewed in the United States on October 20, 2024
I installed air suspension on my 64 impala SS. Used shock/strut relocation brackets. Welded them to the frame but also used four of these self threaders on each side into the frame for extra strength. They ratcheted in fine.
Satisified customer
Reviewed in the United States on January 14, 2022
Just what I was looking for. Needed these large thread cutting bolts in a hurry and received them sooner than expected.
jason
Reviewed in the United States on September 30, 2020
You will need the proper size drill bit to get the bolt started. Satisfactory for $10.
Will D.
Reviewed in the United States on February 16, 2020
Great screws!
JCWeber
Reviewed in the United States on June 25, 2017
If you need these screws, they are good to go.
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