Breakaway Nuts | McMaster-Carr

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100 in·lbf to 149 in·lbf

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100 in·lbf to 149 in·lbf

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24 Products

Breakaway Tamper-Resistant Nuts


	Aluminum	Zinc	Zinc-Plated Alloy Steel	18-8 Stainless Steel

The most tamper-resistant nuts we offer, these have a hex head that breaks away upon tightening, leaving a non-removable cone. They can be installed using a standard wrench. Use them to reduce the risk of unwanted removal for objects in public spaces such as signs, lighting fixtures, and displays.

Aluminum—Aluminum nuts are lightweight, corrosion resistant in wet environments, and nonmagnetic.

Zinc and Zinc-Plated Alloy Steel—Zinc and zinc-plated alloy steel nuts are corrosion resistant in wet environments.

18-8 Stainless Steel—18-8 stainless steel nuts have good chemical resistance and may be mildly magnetic.

	Wd.	Ht.	Ht. After Installation	Breaking Torque, in·lbf	Pkg. Qty.		Pkg.
Aluminum



	10-24	7/16"	3/8"	3/16"	40	10	000000000	00000


	1/4"-20	9/16"	31/64"	7/32"	70	10	000000000	0000
	5/16"-18	5/8"	1/2"	7/32"	150	10	000000000	00000
	3/8"-16	3/4"	19/32"	1/4"	195	10	000000000	00000


	Zinc



			10-24	7/16"	25/64"	3/16"	40	10	000000000	00000


			1/4"-20	9/16"	15/32"	7/32"	60	10	000000000	00000
			5/16"-18	5/8"	1/2"	7/32"	110	10	000000000	00000
			3/8"-16	3/4"	37/64"	1/4"	150	10	000000000	00000
			1/2"-13	1"	3/4"	11/32"	360	5	000000000	00000
			5/8"-11	1 1/8"	51/64"	3/8"	360	5	000000000	00000
			M6 × 1 mm	14 mm	12 mm	6 mm	60	10	000000000	00000
			M8 × 1.25 mm	16 mm	13 mm	6 mm	110	10	000000000	00000
			M10 × 1.5 mm	19 mm	15 mm	6 mm	150	5	000000000	00000
			M12 × 1.75 mm	25 mm	19 mm	9 mm	360	5	000000000	00000


			Zinc-Plated Alloy Steel



					3/4"-10	1 1/4"	1"	13/32"	1,500	100	000000000	000000


					18-8 Stainless Steel



							1/4"-20	9/16"	15/32"	7/32"	95	5	000000000	00000


							5/16"-18	5/8"	1/2"	7/32"	130	5	000000000	00000
							3/8"-16	3/4"	37/64"	1/4"	245	5	000000000	00000
							1/2"-13	1"	3/4"	11/32"	405	100	000000000	000000
							5/8"-11	1 1/8"	51/64"	3/8"	510	50	000000000	000000
							M6 × 1 mm	10 mm	10 mm	5 mm	85	10	000000000	00000
							M8 × 1.25 mm	13 mm	12 mm	7 mm	185	10	000000000	00000
							M10 × 1.5 mm	17 mm	15 mm	9 mm	350	5	000000000	00000
							M12 × 1.75 mm	19 mm	16 mm	9 mm	395	5	000000000	00000