Small Parts 3116FSW Steel Thread Cutting Screw, Zinc Plated Finish, Hex Washer Head, Slotted Drive, Type F, 5/16"-18 Thread Size, 1" Length (Pack of 25)

Brand:Small Parts

3.7/5

32.25

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.

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Slotted drive has a linear slot for use with a flat-blade driver. Hex washer head has a flange for additional grip with the mating surface. Zinc plating resists corrosion and has a reflective appearance. Steel is often used in applications where strength is the primary consideration. Thread cutting screw with type F point has machine screw threads that taper down to a blunt edge and is suitable for heavy gauge sheet metal, aluminum, cast iron, brass, and plastic.
Country of Origin Taiwan
Domestic Shipping Item can be shipped within U.S.
Drive System Slotted
Exterior Finish Zinc
Head Style Flanged
International Shipping This item can be shipped to select countries outside of the U.S.
Item Dimensions LxWxH 1 inches
Item model number 3116FSW
Manufacturer Small Parts
Material Steel

3.7

8 Review
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Scritto da: James A
Good
They cut, they thread, they tighten down! I would buy again.
Scritto da: Charles Jost
Work great
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.
Scritto da: Anthony Diodati
5/16 self-tapping screws
Seem to work quite well. I drilled a quarter inch hole in the metal and wiggled the drill bit around a little bit to ream it out, and then I blew the bolt in with the impact.
Scritto da: Gakona Lodge
Don't Bother
Trash! You'd better tap the hole before drilling into anything that isn't super thin. Trying to put them into mild steel pipe and 75% partially cut and then burn up or shear. They create almost as much work as they save. Classic Amazon product...Chinese garbage!
Scritto da: zz
Get er done
Got them, had to have them.
Scritto da: Ray Menzia
Worked as described
Functionaility
Scritto da: Edward Breslawski
Worth the $$
Work great as long as you drill the correct size pilot hole
Scritto da: Richard A Stotelmyer
Right bolt
Nothing like use the right bolt for the right application.

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