Erfolg manufactured screws are spiral grooved fasteners that are driven into place
via a rotating motion. We have a variety of screw types including Hex Head Screws,
Machine Screws, Expansion Screws, Chipboard Screws, Wood Screws, Mushroom Head
Screws, Counter Sunk Screws, Screws with Heads such as Slotted Phillip, Pozzi, Cross
Recessed, Drilling Screws, Hex Cap Screws, Thumb Screws (Knurled), Round Head Screws,
Self Tapping Screws, Locking Screws, Dowel Screws.

There are many systems for specifying the dimensions of screws. Common metric screw
measurements include an M3 thread that has a 0.5 mm pitch, M4: 0.7 mm, M6: 1 mm, M10-
12: 1.5 mm, M14-16: 2 mm, M18-22: 2.5 mm. The primary purpose of screws is to act as
a threaded fastener used to hold objects together. Screws are also used as a simple
machine to translate torque into linear force.

Varieties of screws serve specific purposes and are manufactured from a variety of
materials. A stainless steel screw is heat treated, hardened steel primarily used for
decks, log homes, remodeling, kitchen cabinets, docks, and roofing. Therefore, a
stainless steel screw is primarily used as a wood screw. The most common stainless
steel screw sizes are 1" - 14". A lead screw may also be produced from stainless
steel, except 5 pitch lead screws which are electroless nickel plated, cold rolled
steel. A lead screw is often utilized in manual and power drive applications.


Screws are produced from many materials including stainless steel, titanium, bronze,
brass, nylon, and teflon, porcelain, and glass. Screws are utilized in construction,
electrical line insulators, robotic drives, aircraft, automobiles, heavy trucks, and
similar critical applications. The Unified Thread Standard (UTS) specifies the thread
form, series, class, allowance, tolerance, and designation for unified screws.