Screws, Bolts

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	Mfr Part #	Quantity Available	Price	Series	Package	Product Status	Type	Screw Head Type	Drive Type	Features	Thread Size	Head Diameter	Head Height	Length - Below Head	Length - Overall	Material	Plating
	1591TS100BK SHT MTL SCRW FLAT PHIL #4 100/PK Hammond Manufacturing	27 In Stock 443 Factory	1 : $9.44000 Bulk	1591	Bulk	Active	Sheet Metal Screw	Flat Head	Phillips	Self Tapping	#4	-	-	-	0.500" (12.70mm) 1/2"	-	Black Oxide
	1591TS100 SHT MTL SCRW FLAT PHIL #4 100/PK Hammond Manufacturing	20 In Stock 15 Factory	1 : $8.21000 Bulk	1591	Bulk	Active	Sheet Metal Screw	Flat Head	Phillips	Self Tapping	#4	-	-	-	0.500" (12.70mm) 1/2"	-	Nickel

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A screw is a conical fastener consisting of a protruding helix around a central shaft that acts as a wedge as it pushes into the fastened material. They are identified by head types such as cheese, flat, hex, knob, truss and pan. Bolts are cylindrical, threaded fasteners for the assembly of non-threaded components with the aid of a nut. They are identified by head types such as binding, cheese, flat, hex, oval, pan, round, spade and truss.