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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.
Charles Jost
2025-09-02 14:07:18
Pre drilled holes in a camper frame. Then used these to mount stabilizer jacks. Was trying to start them with a ratchet at first. Wasn’t working well. Working upside down didn’t help. I put a 1/2 socket on my electric impact driver. These things all went in like wood screws! Since I had the holes all pre drilled. I decided to back out the first bolt re using it to cut threads for all the others. The threads it cut looked great. Plus the bolt held up like a tap cutting multiple times.
CT User
2025-05-03 14:40:22
Used for attaching lifter mechanism to garage doors
travel tools
2025-05-02 17:24:31
Worked well after drilling a hole less than threaded bolt body. Required a decent amount of force to cut into the .25" material. Very happy . I used this to place a new ground wire for my RV batteries.
wendy miller
2025-04-21 15:34:56
Everything was as described
Halztar
2025-03-26 10:51:16
This bolt served it's purpose in attaching two thick sheet metal parts together. I could of actually used a shorter bolt but at the time this was the shortest offered here. So with that being said I didn't really use the thread cutting feature of this bolt. Aside from that this seems like a well made bolt and should I need more in the future I will be a returning customer.
Kurt G.
2025-03-23 11:05:15
Rust free
M. Browning
2025-02-24 12:58:29
I used these to replace a 6mm bolt I had to drill out. Worked perfectly!
mike drabek
2025-02-09 16:43:09
Ripped right through
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