Hex Head Thumb Screws | McMaster-Carr

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22 Products

Stainless Steel Hex-Head Thumb Screws

When you need more torque than fingers alone can provide, crank these stainless steel thumb screws with a wrench. For finger tightening, the thick, hex-shaped head transmits added torque for a stronger hold than other head shapes. These thumb screws aren't recommended for structural, load-bearing applications.

Length is measured from under the head.

18-8 Stainless Steel—The choice for wet and outdoor environments, these screws resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

		Head
	Lg.	Wd.	Ht.	Threading	Tensile Strength, psi		Each
18-8 Stainless Steel







				4-40

				1/2"	3/8"	1/4"	Fully Threaded	80,000	90113A110	00000




						6-32

						1/2"	5/16"	1/4"	Fully Threaded	80,000	90113A120	0000




								8-32

								1/2"	3/8"	1/4"	Fully Threaded	80,000	90113A130	0000


								3/4"	3/8"	1/4"	Fully Threaded	80,000	90113A136	0000




										10-32

										1/2"	3/8"	1/4"	Fully Threaded	80,000	90113A150	0000


										5/8"	3/8"	1/4"	Fully Threaded	80,000	90113A153	0000
										3/4"	1/2"	3/8"	Fully Threaded	80,000	90113A156	0000




												1/4"-20

												5/8"	1/2"	3/8"	Fully Threaded	80,000	90113A160	0000


												3/4"	1/2"	3/8"	Fully Threaded	80,000	90113A163	0000
												1"	5/8"	7/16"	Fully Threaded	80,000	90113A166	0000
												1 1/4"	5/8"	7/16"	Fully Threaded	80,000	90113A169	0000

Steel Hex-Head Thumb Screws

When you need more torque than fingers alone can provide, crank these thumb screws with a wrench. For finger tightening, the thick, hex-shaped head transmits added torque for a stronger hold than other head shapes. These thumb screws aren't recommended for structural, load-bearing applications.

Length is measured from under the head.

Black-Oxide Steel—Typically chosen for their appearance, these screws have a dark, matte coating to create a finished look. They offer minimal corrosion resistance, so they're best for dry environments.

		Head
	Lg.	Wd.	Ht.	Threading	Tensile Strength, psi		Each
Black-Oxide Steel







				4-40

				1/2"	3/8"	1/4"	Fully Threaded	70,000	90732A310	00000




						6-32

						1/2"	5/16"	1/4"	Fully Threaded	70,000	90732A320	0000




								8-32

								1/2"	3/8"	1/4"	Fully Threaded	70,000	90732A330	0000


								3/4"	3/8"	1/4"	Fully Threaded	70,000	90732A340	0000




										10-32

										1/2"	3/8"	1/4"	Fully Threaded	70,000	90732A350	0000


										5/8"	3/8"	1/4"	Fully Threaded	70,000	90732A360	0000
										3/4"	1/2"	3/8"	Fully Threaded	70,000	90732A370	0000




												1/4"-20

												5/8"	1/2"	3/8"	Fully Threaded	70,000	90732A380	0000


												3/4"	1/2"	3/8"	Fully Threaded	70,000	90732A390	0000
												1"	5/8"	7/16"	Fully Threaded	70,000	90732A410	0000
												1 1/4"	5/8"	7/16"	Fully Threaded	70,000	90732A420	0000