What are screws heads, drives and threads?

Import - Drywall Screws; Thread Size: #6; Head Type: Bugle; Drive Type: Phillips; Finish: Dacromet; Material: Carbon Steel - 53526455 - MSC Industrial Supply

A few common screw head types and what they are used for - UC, socket head

A few common screw head types and what they are used for - UC, socket head

DIN1587 Stainless Steel A2 A4 Connecting Hex Domed Cap Nuts, 41% OFF

What are the parts of a screw? - Wonkee Donkee Tools

Coarse Thread Yellow Zinc Square Drive Screws - Anzor

What is the best screw drive?

#8-8 X 1 3/4 Bugle Head Deck Screw, #2 Phillips Drive, Coarse Thread, Sharp Point, 18-8 Stainless Steel - Rapid Start

Wood Screw Flat Head Quadrex Drive Regular Thread Type 17 Point

Grabber 7 x 1-5/8-in Square Drive, Trim Head, Fine Thread, Streaker® Point, 302 Stainless Steel Screws (5-LB)