Swivel-Pad Thumb Screws | McMaster-Carr

Filter by

Fastener Head Type

Thumb

System of Measurement

Thread Size

Length

Tip Type

Tip Diameter

Head Diameter

Grip Style

Material

Head Height

Head Width

Maximum Swivel Angle

Thread Spacing

Swivel Tip Permanence

Tensile Strength

Tip Length

Collar Diameter

RoHS

Compliant with Exemptions

Performance

Hardness

REACH

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

Exempt

Thread Fit

Unified Standard Class 2A

Collar Height

Thread Type

60 Products

Grip Style

Knurled Head

The texture increases friction so your fingers won't slip when tightening

22 products

Four Arm

Greater twisting control than other head shapes

38 products

Thumb Screw Head Profile

Low

The thin head fits in tight spaces

22 products

Self-Aligning Four-Arm Swivel-Tip Thumb Screws

The large tip on these thumb screws secures a bigger surface area than our other swivel-tip screws. It pivots to sit flat against uneven and angled workpiece surfaces without causing damage. Remove the tip to thread these screws through a hole, then reattach the tip on the other side. The four arms of the head create natural grooves for your hand to grip when fastening.

Length is measured from under the collar.

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.

Extra Large—To maximize surface contact, these are twice the size of the tip included with these thumb screws.

Acetal Tips—Nonmarring, so they're safe to use on delicate surfaces.

	Thumb Screws												Extra-Large Steel Tips			Acetal Tips			Replacement Retaining Springs
		Head		Collar		Tip
	Lg.	Wd.	Ht.	Dia.	Ht.	Dia.	Lg.	Max. Swivel Angle	Threading	Tensile Strength, psi		Each	Dia.		Each	Dia.		Each		Each
Black-Oxide Steel







				1/4"-20

				1 1/4"	1 1/8"	5/8"	9/16"	5/16"	5/16"	3/16"	10°	Fully Threaded	60,000	000000000	000000	5/8"	000000000	00000	5/16"	000000000	00000	000000000	00000


				2"	1 1/8"	5/8"	9/16"	5/16"	5/16"	3/16"	10°	Fully Threaded	60,000	000000000	00000	5/8"	000000000	0000	5/16"	000000000	0000	000000000	0000
				2 3/4"	1 1/8"	5/8"	9/16"	5/16"	5/16"	3/16"	10°	Fully Threaded	60,000	000000000	00000	5/8"	000000000	0000	5/16"	000000000	0000	000000000	0000
				3 1/2"	1 1/8"	5/8"	9/16"	5/16"	5/16"	3/16"	10°	Fully Threaded	60,000	000000000	00000	5/8"	000000000	0000	5/16"	000000000	0000	000000000	0000




						5/16"-18

						1 5/16"	1 1/2"	7/8"	11/16"	5/8"	3/8"	7/32"	10°	Fully Threaded	60,000	000000000	00000	3/4"	000000000	0000	3/8"	000000000	0000	000000000	0000


						2 1/16"	1 1/2"	7/8"	11/16"	5/8"	3/8"	7/32"	10°	Fully Threaded	60,000	000000000	00000	3/4"	000000000	0000	3/8"	000000000	0000	000000000	0000
						2 13/16"	1 1/2"	7/8"	11/16"	5/8"	3/8"	7/32"	10°	Fully Threaded	60,000	000000000	00000	3/4"	000000000	0000	3/8"	000000000	0000	000000000	0000
						3 9/16"	1 1/2"	7/8"	11/16"	5/8"	3/8"	7/32"	10°	Fully Threaded	60,000	000000000	00000	3/4"	000000000	0000	3/8"	000000000	0000	000000000	0000




								3/8"-16

								1 5/16"	2"	1"	13/16"	1/2"	7/16"	1/4"	10°	Fully Threaded	60,000	000000000	00000	3/4"	000000000	0000	7/16"	000000000	0000	000000000	0000


								2 1/16"	2"	1"	13/16"	1/2"	7/16"	1/4"	10°	Fully Threaded	60,000	000000000	00000	3/4"	000000000	0000	7/16"	000000000	0000	000000000	0000
								2 13/16"	2"	1"	13/16"	1/2"	7/16"	1/4"	10°	Fully Threaded	60,000	000000000	00000	3/4"	000000000	0000	7/16"	000000000	0000	000000000	0000
								3 9/16"	2"	1"	13/16"	1/2"	7/16"	1/4"	10°	Fully Threaded	60,000	000000000	00000	3/4"	000000000	0000	7/16"	000000000	0000	000000000	0000
								4 5/16"	2"	1"	13/16"	1/2"	7/16"	1/4"	10°	Fully Threaded	60,000	000000000	00000	3/4"	000000000	0000	7/16"	000000000	0000	000000000	0000




										1/2"-13

										2 1/16"	2 1/2"	1 1/8"	1"	9/16"	9/16"	5/16"	10°	Fully Threaded	60,000	000000000	00000	7/8"	000000000	0000	9/16"	000000000	0000	000000000	0000


										2 13/16"	2 1/2"	1 1/8"	1"	9/16"	9/16"	5/16"	10°	Fully Threaded	60,000	000000000	00000	7/8"	000000000	0000	9/16"	000000000	0000	000000000	0000
										3 9/16"	2 1/2"	1 1/8"	1"	9/16"	9/16"	5/16"	10°	Fully Threaded	60,000	000000000	00000	7/8"	000000000	0000	9/16"	000000000	0000	000000000	0000
										4 5/16"	2 1/2"	1 1/8"	1"	9/16"	9/16"	5/16"	10°	Fully Threaded	60,000	000000000	00000	7/8"	000000000	0000	9/16"	000000000	0000	000000000	0000
										5 1/16"	2 1/2"	1 1/8"	1"	9/16"	9/16"	5/16"	10°	Fully Threaded	60,000	000000000	00000	7/8"	000000000	0000	9/16"	000000000	0000	000000000	0000




												5/8"-11

												2 5/16"	3"	1 1/4"	1 1/4"	5/8"	11/16"	13/32"	10°	Fully Threaded	60,000	000000000	00000	1"	000000000	0000	11/16"	000000000	0000	000000000	0000


												3 1/16"	3"	1 1/4"	1 1/4"	5/8"	11/16"	13/32"	10°	Fully Threaded	60,000	000000000	00000	1"	000000000	0000	11/16"	000000000	0000	000000000	0000
												3 13/16"	3"	1 1/4"	1 1/4"	5/8"	11/16"	13/32"	10°	Fully Threaded	60,000	000000000	00000	1"	000000000	0000	11/16"	000000000	0000	000000000	0000
4 9/16"												3"	1 1/4"	1 1/4"	5/8"	11/16"	13/32"	10°	Fully Threaded	60,000	000000000	00000	1"	000000000	0000	11/16"	000000000	0000	000000000	0000
5 5/16"	3"											1 1/4"	1 1/4"	5/8"	11/16"	13/32"	10°	Fully Threaded	60,000	000000000	00000	1"	000000000	0000	11/16"	000000000	0000	000000000	0000

Self-Aligning Swivel-Tip Thumb Screws

Secure components at an angle or against uneven surfaces with these thumb screws. The tip pivots to conform to surfaces and is narrow enough to fit through threaded holes. The knurled texture of the head creates extra grip as you twist.

Length is measured from under the head.

		Head		Tip
	Lg.	Dia.	Ht.	Dia.	Lg.	Max. Swivel Angle	Threading	Tensile Strength, psi		Each
Black-Oxide Steel







				1/4"-20

				1 1/2"	1"	5/16"	3/16"	1/4"	10°	Fully Threaded	70,000	000000000	000000


				1 1/2"	1"	3/8"	3/16"	1/4"	7.5°	Fully Threaded	80,000	000000000	0000
				2"	1"	5/16"	3/16"	1/4"	10°	Fully Threaded	70,000	000000000	00000
				2"	1"	3/8"	3/16"	1/4"	7.5°	Fully Threaded	80,000	000000000	00000




						5/16"-18

						1 1/2"	1 1/8"	3/8"	1/4"	1/4"	10°	Fully Threaded	70,000	000000000	00000


						1 1/2"	1 1/8"	7/16"	1/4"	1/4"	7.5°	Fully Threaded	80,000	000000000	0000
						2"	1 1/8"	3/8"	1/4"	1/4"	10°	Fully Threaded	70,000	000000000	00000
						2"	1 1/8"	7/16"	1/4"	1/4"	7.5°	Fully Threaded	80,000	000000000	00000
						2 1/2"	1 1/8"	3/8"	1/4"	1/4"	10°	Fully Threaded	70,000	000000000	00000
						2 1/2"	1 1/8"	7/16"	1/4"	1/4"	7.5°	Fully Threaded	80,000	000000000	00000




								3/8"-16

								1 1/2"	1 1/4"	7/16"	5/16"	3/8"	10°	Fully Threaded	70,000	000000000	00000


								1 1/2"	1 1/4"	1/2"	5/16"	3/8"	7.5°	Fully Threaded	80,000	000000000	00000
								2"	1 1/4"	7/16"	5/16"	3/8"	10°	Fully Threaded	70,000	000000000	00000
								2"	1 1/4"	1/2"	5/16"	3/8"	7.5°	Fully Threaded	80,000	000000000	00000
								2 1/2"	1 1/4"	7/16"	5/16"	3/8"	10°	Fully Threaded	70,000	000000000	00000
								2 1/2"	1 1/4"	1/2"	5/16"	3/8"	7.5°	Fully Threaded	80,000	000000000	00000
								3"	1 1/4"	7/16"	5/16"	3/8"	10°	Fully Threaded	70,000	000000000	00000
								3"	1 1/4"	1/2"	5/16"	3/8"	7.5°	Fully Threaded	80,000	000000000	00000




										1/2"-13

										1 1/2"	1 1/4"	9/16"	3/8"	3/8"	7.5°	Fully Threaded	80,000	000000000	00000


										2"	1 1/4"	9/16"	3/8"	3/8"	7.5°	Fully Threaded	80,000	000000000	00000
										2 1/2"	1 1/4"	9/16"	3/8"	3/8"	7.5°	Fully Threaded	80,000	000000000	00000
										3"	1 1/4"	9/16"	3/8"	3/8"	7.5°	Fully Threaded	80,000	000000000	00000