What is a Trilobular screw?

What is a Trilobular screw?

TAPTITE II® thread-rolling screws have the TRILOBULAR® shape, which reduces friction during thread forming, provides prevailing torque, which exceeds the level of locking screws, and most importantly, inherently provides resistance to vibrational loosening.

Can you Rescrew self-tapping screws?

Take care to not to over-tighten the screw as this can damage the metal or break the screw. The advantage of using self-tapping screws for aluminium is that they don’t need pre-drilling and are easily removed without damaging the metal. They can also be reused in the same material.

Do they make stainless steel self-tapping screws?

Overview. Stainless Steel Self Drilling screws can drill their own pilot hole due to their design which incorporates a special point similar to a drill bit. This screws can be used for up to two sheets of 1.00mm stainless steel (2.00mm total thickness).

What is the best screws for stainless steel?

Most builder needs for screws and fasteners fit into the 18-8 (Types 300-304 grade stainless steel), Type 305 stainless screws are recommended for decks, Type 316 stainless steel for builds around chlorine, saltwater and other corrosive atmospheres, while Type 410 stainless self-drilling screws are used when extra …

What are Taptite screws?

TAPTITE® thread rolling screws roll form threads in plain cored, drilled, or punched holes upon assembly. Creating vibration resistant assemblies, eliminating the need to pre-tap internal threads in ductile materials such as steel, aluminum, zinc, etc., thus lowering the cost of assembly.

What are Plastite screws?

The Plastite 45 screw is designed to facilitate thread-forming in less-compressible plastics while providing high resistance to strip-out and pull-out. The 45° thread profile allows threads to penetrate deeply into plastic material and generate strong mating threads which resist vibration loosening.

Do self-tapping screws come loose?

Self-Tapping Screws They’re often called metal screws, sheet metal screws, tapping screws, or tapper screws. The screw will become loose and not thread properly and securely if the hole’s too big. If the hole’s too small, the screw can break or cause the material to split or crack.

How thick of metal can self-tapping screws go through?

Designed to not only drill through thick, hardened, or complex alloy steel, but can also pass stringent 1mm + 2mm + 9mm, and 2mm + 12mm penetration tests.

Are Tek screws stainless steel?

No corrosion: Tek® screws are made from stainless steel and other materials that won’t corrode.

Can you screw into stainless steel?

Material. Stainless steel is an extremely hard material. Low-carbon steel bits, like those used to drill into wood, do not perform when applied to stainless steel. Therefore, a drill bit for use with stainless steel needs to actually be harder than the steel itself.

Are there different grades of stainless steel screws?

Stainless steel fasteners are made from a steel alloy that contains a minimum of 10.5% of Chromium and is also referred to as Inox steel. There are over 150 different grades and surface finishes of stainless steel fasteners and stainless bolts that are available.

What are the different grades of stainless steel screws?


Fastener Type Diameter Grades
Hex bolts M-12 to M-100 304 / 304 L
Hex cap screws M-12 to M-100 304 / 304 L
Socket head cap screws M-30 to M-72 304 / 304 L
Hex nuts M-30 to M-72 304 / 304 L

What is a trilobular thread forming screw?

A trilobular thread forming screw forms a thread with a machine screw’s thread pitch. As each lobe of the screw moves through the pilot hole in the nut material, it forms and work hardens the nut thread metal, producing an uninterrupted grain flow.

What are thread-forming screws used for?

Stainless Steel thread-forming screws are typically used in Aluminium and Non-Ferrous materials. Available as per DIN-7500 in the following head types. PAN with Tx drive. Our Trilobular screws use the Torx Compatible drive for reliability and ease of installation.

What are 18-8 screws used for?

18-8 stainless steel screws have good chemical resistance. These steel screws have a black-oxide or zinc-plated finish to resist corrosion. 18-8 stainless steel screws have good chemical resistance. These steel screws are beveled under the head for use in countersunk holes.

What is a lead screw used for?

The screw is designed with a tapered point or commonly referred to as lead threads. The tapered point allows for lower installation torque during initial thread forming. The trilobular shape is key to allowing the remaining threads to form threads with the lowest amount of installation torque.