240pcs Flat Head Screws #4-40#6-32 | 280pcs Pan Head Screws #4-40#6-32 | 60pcs White Pan Head Screws #8 X 1 1/2" | |
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Customer Reviews |
4.5 out of 5 stars
106
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4.5 out of 5 stars
106
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4.4 out of 5 stars
195
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Price | $9.99$9.99 | $13.99$13.99 | $12.99$12.99 |
Includes | Flat head screws #4-40x5/16", #4-40x1/2", #4-40x3/4", #4-40x1", #6-32x5/16", #6-32x1/2", #6-32x3/4", #6-32x7/8", nuts for screws #4-40 and #6-32 | Pan head screws #4-40x1/2", #4-40x3/4", #4-40x1", #6-32x1/2", #6-32x3/4", #6-32x1", flat washers for screws 4-40 and 6-32, nuts #4-40 and #6-32 | Pan White Head Screw # 8 X 1 1/2" + Screw Bit |
Color of Head | Steel | Steel | White |
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Cross GroovePowder Coated Bright White Head |
Strong and SturdyZinc finish offers improved corrosion resistance |
Essential for LifeThis screw that can tap the thread by itself without drilling a hole |
Screws help to hold things together, such as pieces of wood or metal. Compared to ordinary nails, screws provide more strength and holding power. They also form a tighter seal. Plus, unlike nails, they can also be removed fairly easily.
Typically, screws and bolts are made from steel due to its strength and relatively inexpensive cost. However, screws and fasteners can also be produced from stainless steel, brass, titanium, and a wide range of other metals depending on the intended application.
Like the other simple machines a screw can amplify force; a small rotational force (torque) on the shaft can exert a large axial force on a load. The smaller the pitch (the distance between the screws threads), the greater the mechanical advantage (the ratio of output to input force).
In general, screws have better holding power and superior strength than nails, and they are more easily removable.