Easily 22 general categories, this guy below came up with 26.
One of the many things that always fascinated during my carpentry and handyman days was how many different types of screws there were, and I keep seeing new kinds, and danged, if there isn’t a good reason, application, for each of 'em.
Screws is a super category.
, 
- Carriage bolts
- Decking screws
- Double ended screws
- Drywall screws
- Eye bolt screws
- Framing screws
- Fillister head screws
- Hex cap screws
- Hammer drive screws
- Lag screws
- Machine screws
- Masonry screws
- Oval head screws
- Pan-head screws
- Particle board screws
- Square head bolts
- Self-drilling screws
- Set screws
- Shoulder screws
- Sheet metal screws
- Socket-head screws
- Thread cutting screws
- Washer-faced screws
- Wood screws
- Weld screws
- Tamper-proof screw
Ever wonder how many parts a single screw contains?
Hope you all had a good Thanksgiving Day, I did.
Oh and we call them “screws” because we can’t remember all them different names!
