Zinc-Alloy Tamper-Resistant Nuts

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Tamper Resistant

Material

Zinc

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Unified Standard Class 2B

Breaking Torque

Less than 100 in·lbf

100 in·lbf to 149 in·lbf

150 in·lbf to 249 in·lbf

250 in·lbf to 499 in·lbf

Height After Installation

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DFARS Specialty Metals

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Torque

50 in·lbf to 99 in·lbf

100 in·lbf to 249 in·lbf

250 in·lbf to 499 in·lbf

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22 Products

Breakaway Tamper-Resistant Nuts


	Zinc

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.

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

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



	10-24	7/16"	25/64"	3/16"	40	10	000000000	000000


	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

Drilled-Spanner-Drive Tamper-Resistant Nuts

A wide base and large bearing surface make these nuts good for securing large objects. They must be installed and removed with a nutdriver (sold separately). Use them to reduce the risk of unwanted removal for objects in public spaces such as signs, lighting fixtures, and displays.

Zinc—Made from zinc, they're corrosion resistant in wet environments.

	Nuts						Spanner Nutdrivers
	Thread Size	Dia.	Ht.	Pkg. Qty.		Pkg.		Each
Zinc



		1/4"-20	1"	1/4"	10	000000000	000000	000000000	000000


		5/16"-18	1"	1/4"	10	000000000	00000	000000000	00000
		3/8"-16	1"	1/4"	10	000000000	00000	000000000	00000
		M6 × 1 mm	1"	1/4"	10	000000000	00000	000000000	00000
		M8 × 1.25 mm	1"	1/4"	10	000000000	00000	000000000	00000
		M10 × 1.5 mm	1"	1/4"	10	000000000	00000	000000000	00000

Tri-Groove-Drive Tamper-Resistant Nuts

Tri-groove-drive nuts are narrower than sloped and drilled-spanner-drive nuts to fit in tight spaces. Install with a tri-groove socket and either a socket driver or an open-end wrench (all sold separately). Use them to reduce the risk of unwanted removal for objects in public spaces such as signs, lighting fixtures, and displays.

Zinc—Zinc nuts are lightweight and corrosion resistant in wet environments.

	Nuts						Tri-Groove Sockets		Socket Drivers
	Thread Size	Dia.	Ht.	Pkg. Qty.		Pkg.		Each		Each
Zinc



		M6 × 1 mm	0.66"	0.265"	10	000000000	00000	0000000	000000	0000000	000000


		M8 × 1.25 mm	0.83"	0.345"	10	000000000	0000	0000000	00000	0000000	00000