What do the marks on the head of a bolt mean?
They represent the hardness of the bolt. No marks indicates the least hard, three marks is medium hardness and bolts with six marks are the... More »
What do the marks on the head of a bolt mean?
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No marks is the least hard.
Three marks is a medium hardness.
Six marks is the hardest bolt.
I’ve broken the head off a bolt. Is there some way I can get it out?
You should use a bolt extractor kit. It has a tap and an insert with a left-hand thread so that it can be turned to remove the... More »
I need to replace this bolt on my car engine, what bolt do I use?
Automotive bolts are usually a fine... More »
How do I install a toggle bolt?
Drill proper size hole and insert bolt. Don’t forget that you have to insert bolt through the item you are fastening to the wall. Collapse the... More »
What are the advantages of a carriage bolt?
The square shoulder, sunk into wood, prevents the bolt from turning and the round head gives a smoother... More »
What do the letters “K,” “L” and “M” on copper tubing mean?
Type K is the heaviest. Type L is medium weight and used most often for waterlines in homes. Type M is thinner and is used underground or for light... More »
What is a lag bolt?
It is basically a large wood screw (with a pointed tip) and a hex... More »
What do numbers on electrical cable mean?
They refer to the number and types of wire inside the cable. For example, 14-2 means the cable has two 14-gauge wires inside. 12-3 G means the cable... More »
What do the colors of the plastic insulation mean on wires?
They are designed to indicate their use, but be careful, because they are not always hooked correctly. Hot wires, those carrying current at full... More »
I have a bolt that is not threading in properly. Can I fix this?
Yes, a thread repair kit allows you to retap it, put in an insert and rebuild... More »
How to Replace a Shower Head
Showerheads can become old and out-of-date with time. If you're planning to change your's out, be sure to watch this video. This how-to guide will... More »
