You may have already encountered this situation before you go into the hardware store and go straight to those small boxes of bolts and hopefully you can find what you need before the salesman “helps” your list of questions.
“Do you want a carriage bolt, machine bolt or stove bolt? Do you need the stainless steel machine screws ? In what size? Fine or thick thread? Do you need a special hardening level?
Here are some tips and basic information that might help you understand more about screw and bolt.
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Sizes
The dimensions of the bolts are arranged in order according to diameter, thread and length. In most cases, the diameter and length are listed in inches, threaded threads per inch. Thus, a qu
arter-inch diameter bolt, 20 threads per inch, two inches long, will be listed as quarter-inch by 20 x 2 inches or one quarter / 20 x 2 inches.
Sometimes the thread is listed as UNF (fine) or UNC (thick) instead of every inch. Just a little change to keep something interesting.
Strength
High-strength bolts will have radiation-like marks, and the more the “spokes”, the stronger the bolts. For example, the bottom of the sketch has three markers, which is the fifth grade.
Most work does not require high strength bolts, but you may need them for some automotive applications. If you want to replace the bolt that needs to be marked, make sure you buy the bolt instead of its position.
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Head Style
Speaking of mind, opened a new set of variables. Some bolts have square head, other bolts with hexagonal head. Which is better? If you have a sleeve or socket wrench, then you will prefer hexadecimal. Your wrenches will fit them, you will be able to work faster and work more closely.
If you work mainly with adjustable wrenches, you may prefer square head. A sloppy adjustable wrench can be slipped and rounded, but it should be no trouble, only to seize the square head.
Hope these might help you understand more about screw and bolts. Thus, you won’t mistake to buy a screw and bolts. Wanna to know where to buy screws and bolts? Yuhuang screw manufacturer is one of your best choices.
Contact info: info@yhscrew.com
