3/8"-16 T Handles | McMaster-Carr

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24 Products

T-Bolts


Steel	Black Oxide Steel

Zinc-Plated Steel

Also known as tank-strap bolts, these T-bolts are commonly used with a band clamp or a strap to hold fuel tanks and other objects in place. The large T-shaped head provides a secure grip for steady tightening.

Steel—Steel T-bolts without a finish are ready to be painted or finished.

Black Oxide Steel—Black-oxide steel T-bolts are mildly corrosion resistant in dry environments.

Zinc-Plated Steel—Zinc-plated steel T-bolts resist corrosion in wet environments.

Coarse Thread—Coarse threads are the industry standard; choose these screws if you don’t know the threads per inch.

Length—Length is measured from the top of the head.

Thread Spacing—Match the thread spacing of mating components.

					Head
	Thread Size	Lg.	Threading	Thread Spacing	Wd.	Thk.	Tensile Strength, psi		Each
Steel



		3/8"-16	2 15/16"	Partially Threaded	Coarse	1 3/4"	3/8"	120,000	000000000	00000


		3/8"-16	3 11/16"	Partially Threaded	Coarse	2"	3/8"	120,000	000000000	00000


		Black Oxide Steel



				3/8"-16	5 3/16"	Partially Threaded	Coarse	1 3/4"	3/8"	Not Rated	000000000	00000


				Zinc-Plated Steel



						3/8"-16	2 15/16"	Partially Threaded	Coarse	1 3/4"	3/8"	120,000	000000000	00000


						3/8"-16	3 11/16"	Partially Threaded	Coarse	2"	3/8"	120,000	000000000	00000

Threaded-Hole Knobs


Style 13	Style 14	Style 15	Style 18

Install these knobs on a threaded stud. They provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.

Style 13—Two-Arm Grip

Style 13

Phenolic—Plastic knobs are a lightweight alternative to metal. They resist oil, grease, and solvents. Phenolic has good scratch resistance.

Polypropylene—Plastic knobs are a lightweight alternative to metal. They resist oil, grease, and solvents. Polypropylene has good impact resistance.

	Thread		Head		Hub					Each
	Sz.	Dp.	Wd.	Ht.	Dia.	Ht.	Insert Material	Temp. Range, ° F		1-9	10-Up
Black Phenolic



		3/8"-16	1/2"	2"	5/8"	3/4"	1/2"	Brass	-10 to 275	00000000	00000	00000


		Black Polypropylene



				3/8"-16	1/2"	1 1/2"	5/8"	3/4"	1/8"	Brass	-15 to 125	0000000	0000	0000


				3/8"-16	1/2"	2 1/2"	5/8"	3/4"	1/2"	Brass	-15 to 125	00000000	0000	0000
				3/8"-16	1/2"	3 1/2"	7/8"	15/16"	1/4"	Brass	-15 to 125	00000000	0000	0000

Style 14—Two-Arm Grip

Style 14

Polypropylene—Plastic knobs are a lightweight alternative to metal. They resist oil, grease, and solvents. Polypropylene has good impact resistance.

	Thread		Head		Hub					Each
	Sz.	Dp.	Wd.	Ht.	Dia.	Ht.	Insert Material	Temp. Range, ° F		1-9	10-Up
Black Polypropylene



		3/8"-16	1/2"	2 1/4"	3/4"	3/4"	11/16"	Brass	-15 to 125	0000000	00000	00000

Style 15—Two-Arm Grip

Style 15

303 Stainless Steel—303 stainless steel knobs have excellent corrosion resistance, making them the best choice for harsh environments. They also have good chemical resistance.

	Thread		Head		Hub			Each
	Sz.	Dp.	Wd.	Ht.	Dia.	Ht.		1-9	10-Up
303 Stainless Steel



		3/8"-16	9/16"	2 15/16"	3/4"	13/16"	5/8"	0000000	000000	000000

Style 18—Two-Arm Grip

Style

Polypropylene—Plastic knobs are a lightweight alternative to metal. They resist oil, grease, and solvents. Polypropylene has good impact resistance.

	Thread		Head		Hub					Each
	Sz.	Dp.	Wd.	Ht.	Dia.	Ht.	Insert Material	Temp. Range, ° F		1-9	10-Up
Black Polypropylene



		3/8"-16	1/2"	3"	3/8"	13/16"	13/16"	Brass	-15 to 125	0000000	00000	00000

T-Bolts with Collar

Also known as clamping pins, these bolts have a collar that slides along the shaft and can be welded in place to hold work and prevent over torquing. The large T-shaped head provides a secure grip for steady tightening. The black-oxide finish provides corrosion resistance in dry environments.

Length—Length is measured from the top of the head.

					Head
	Thread Size	Lg.	Threading	Thread Spacing	Wd.	Thk.	Tensile Strength, psi		Each
Black Oxide Steel



		3/8"-16	5"	Partially Threaded	Coarse	3 1/2"	1/2"	70,000	000000000	000000

Threaded-Stud Knobs


Style 7	Style 8

Mount these knobs into a threaded hole. They provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.

Style 7—Two-Arm Grip

Style 7

Phenolic—Plastic knobs are a lightweight alternative to metal. They resist oil, grease, and solvents. Phenolic has good scratch resistance.

Nylon—Plastic knobs are a lightweight alternative to metal. They resist oil, grease, and solvents. Nylon has good wear resistance.

			Head		Hub					Each
	Thread Size	Stud Lg.	Wd.	Ht.	Dia.	Ht.	Stud Material	Temp. Range, ° F		1-9	10-Up
Black Phenolic



		3/8"-16	1"	2"	5/8"	3/4"	1/2"	Stainless Steel	-30 to 400	00000000	00000	00000


		3/8"-16	1"	2"	5/8"	3/4"	1/2"	Steel	-30 to 400	00000000	0000	0000


		Black Nylon



				3/8"-16	1/2"	2 1/2"	5/8"	3/4"	1/2"	Steel	-15 to 150	00000000	0000	0000


				3/8"-16	1"	2 1/2"	5/8"	3/4"	1/2"	Stainless Steel	-15 to 150	00000000	0000	0000
				3/8"-16	1"	2 1/2"	5/8"	3/4"	1/2"	Steel	-15 to 150	00000000	0000	0000
				3/8"-16	1"	3 1/2"	7/8"	15/16"	1/4"	Steel	-15 to 150	00000000	0000	0000

Style 8—Two-Arm Grip

Style 8

Polypropylene—Plastic knobs are a lightweight alternative to metal. They resist oil, grease, and solvents. Polypropylene has good impact resistance.

			Head		Hub					Each
	Thread Size	Stud Lg.	Wd.	Ht.	Dia.	Ht.	Stud Material	Temp. Range, ° F		1-9	10-Up
Black Polypropylene



		3/8"-16	1 1/2"	2 1/4"	3/4"	3/4"	11/16"	Stainless Steel	-15 to 125	00000000	00000	00000

Vibration-Resistant Threaded Through-Hole Knobs

Style 1

Like locknuts, these knobs have a nylon insert that grips threads to resist loosening. Long shafts can thread through these knobs for mounting versatility. Use the knobs as a grip to position, tighten, and hold fixtures, equipment, and machinery. Made of plastic, all resist oil, grease, and solvents.

Style 1—Two-Arm Grip

Style 1

	Thread		Head		Hub					Each
	Sz.	Dp.	Wd.	Ht.	Dia.	Ht.	Insert Material	Temp. Range, ° F		1-9	10-Up
Black Polypropylene



		3/8"-16	1/2"	2"	5/8"	3/4"	1/2"	Zinc-Plated Steel	-15 to 125	00000000	00000	00000


		3/8"-16	1/2"	2 1/2"	5/8"	3/4"	1/2"	Zinc-Plated Steel	-15 to 125	00000000	0000	0000

T-Handle Retractable Spring Plungers

With the widest grip, T-handles give you the most leverage of all our handles and are the easiest to grab with gloved or slippery hands. A tug manually retracts the nose so you can do everything from latching heavy, frequently-accessed doors to locking large cutting blades in place.

Spring plungers are available with or without a threadlocker. Those with a threadlocker won't wiggle loose from vibration. Spring plungers without a threadlocker are easier to remove.

Steel Nose—The strongest, most wear-resistant noses, these won't deform from stress and vibration. Steel is best for dry environments, however, since moisture will cause it to rust.

18-8 Stainless Steel Nose—The choice for wet and outdoor environments, 18-8 stainless steel resists rusting. It's strong enough for most jobs, but won't withstand stress and vibration as well as steel.

Twist-to-Lock—Free up both hands to adjust your workpiece or switch out parts without the plunger springing back and getting in the way. Pull back the handle and twist to lock the nose in its retracted position.

			Nose		Nose Force, lbf		Body		Handle		Twist-to-Lock
	Thread Size	Thread Lg.	Extended Lg.	Dia.	Extended	Compressed	Material	Lg.	Material	Lg.		Each
Steel Nose



		3/8"-16	1.2"	0.375"	0.233"	2	4	Zinc-Plated Steel	1.68"	Steel	1 1/2"	00000000	000000


		18-8 Stainless Steel Nose



				3/8"-16	1.2"	0.375"	0.233"	2	4	18-8 Stainless Steel	1.68"	18-8 Stainless Steel	1 1/2"	00000000	00000