Steel Tamper-Resistant Nuts

Filter by

Nut Type

Tamper Resistant

Material

Stainless Steel

Steel

System of Measurement

Thread Size

Drive Style

Width

Height

Thread Spacing

Finish

Zinc Yellow-Chromate Plated

Thread Type

Thread Direction

Thread Pitch

DFARS Specialty Metals

Exempt

Not Compliant

Thread Fit

Metric Class 6H

Unified Standard Class 2B

Diameter

Export Control Classification Number (ECCN)

REACH

RoHS

Breaking Torque

100 in·lbf to 149 in·lbf

150 in·lbf to 249 in·lbf

250 in·lbf to 499 in·lbf

500 in·lbf or greater

Performance

Breakaway

Height After Installation

Torque

50 in·lbf to 99 in·lbf

100 in·lbf to 249 in·lbf

250 in·lbf to 499 in·lbf

500 in·lbf or greater

Forward

How can we improve?

51 Products

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-Plated Steel—Zinc-plated steel nuts are coated to protect the steel from corrosion in wet environments.

316 Stainless Steel—316 stainless steel nuts won’t corrode from water, chemicals, or salt spray.

	Nuts						Tri-Groove Sockets		Socket Drivers		Open-End Wrenches
	Thread Size	Dia.	Ht.	Pkg. Qty.		Pkg.		Each		Each		Each
Zinc-Plated Steel



		10-24	0.64"	0.265"	25	000000000	000000	0000000	000000	0000000	000000	———	0


		10-32	0.64"	0.265"	25	000000000	00000	0000000	00000	0000000	00000	———	0
		1/4"-20	0.64"	0.265"	25	000000000	00000	0000000	00000	0000000	00000	———	0
		5/16"-18	0.83"	0.345"	25	000000000	00000	0000000	00000	0000000	00000	———	0
		3/8"-16	0.83"	0.345"	25	000000000	00000	0000000	00000	0000000	00000	———	0


		316 Stainless Steel



				10-24	0.65"	0.265"	10	000000000	00000	0000000	00000	0000000	00000	———	0


				10-32	0.65"	0.265"	10	000000000	00000	0000000	00000	0000000	00000	———	0
				1/4"-20	0.66"	0.265"	10	000000000	00000	0000000	00000	0000000	00000	———	0
				1/4"-28	0.65"	0.265"	10	000000000	00000	0000000	00000	0000000	00000	———	0
				5/16"-18	0.83"	0.345"	10	000000000	00000	0000000	00000	0000000	00000	———	0
				5/16"-24	0.83"	0.35"	5	000000000	00000	0000000	00000	0000000	00000	———	0
				3/8"-16	0.83"	0.345"	10	000000000	00000	0000000	00000	0000000	00000	———	0
				3/8"-24	0.83"	0.35"	5	000000000	00000	0000000	00000	0000000	00000	———	0
				7/16"-14	0.83"	0.34"	1	000000000	0000	0000000	00000	0000000	00000	———	0
				1/2"-13	0.93"	0.345"	1	000000000	0000	00000000	00000	0000000	00000	———	0
				1/2"-20	0.93"	0.345"	1	000000000	0000	00000000	00000	0000000	00000	———	0


				5/8"-11	1.51"	0.505"	1	000000000	00000	0000000	000000	———	0	0000000	000000
				5/8"-18	1.51"	0.505"	1	000000000	00000	0000000	000000	———	0	0000000	00000
				3/4"-10	1.51"	0.505"	1	000000000	00000	0000000	000000	———	0	0000000	00000
				3/4"-16	1.51"	0.505"	1	000000000	00000	0000000	000000	———	0	0000000	00000
				M5 × 0.8 mm	0.66"	0.265"	5	000000000	00000	0000000	00000	0000000	00000	———	0
				M6 × 1 mm	0.66"	0.265"	5	000000000	00000	0000000	00000	0000000	00000	———	0
				M8 × 1 mm	0.82"	0.35"	1	000000000	0000	0000000	00000	0000000	00000	———	0
				M8 × 1.25 mm	0.82"	0.35"	5	000000000	00000	0000000	00000	0000000	00000	———	0
				M10 × 1.25 mm	0.82"	0.35"	1	000000000	0000	0000000	00000	0000000	00000	———	0
				M10 × 1.5 mm	0.82"	0.35"	1	000000000	0000	0000000	00000	0000000	00000	———	0


				M12 × 1.5 mm	0.94"	0.35"	1	000000000	0000	00000000	00000	0000000	00000	———	0
				M12 × 1.75 mm	0.94"	0.35"	1	000000000	0000	00000000	00000	0000000	00000	———	0
				M16 × 2 mm	1.51"	0.505"	1	000000000	00000	0000000	000000	———	0	0000000	00000

Breakaway Tamper-Resistant Nuts


	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.

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.
Zinc-Plated Alloy Steel



	3/4"-10	1 1/4"	1"	13/32"	1,500	100	000000000	0000000


	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

Sloped Tamper-Resistant Nuts

Image of ProductInUse. Front orientation. Tamper-Resistant Nuts. Sloped Surface.

Sloped sides make these nuts difficult to grasp with standard hand tools to reduce the risk of unwanted removal. To install, thread a second sloped nut onto the bolt upside down and insert a wrench between the two nuts to fasten. They're often used to secure signs, lighting fixtures, and displays in public spaces.

Zinc-Yellow-Chromate-Plated Steel—A zinc yellow-chromate plating provides corrosion resistance in wet environments.

	Wd.	Ht.	Pkg. Qty.		Pkg.
Zinc-Yellow-Chromate-Plated Steel



	1/4"-20	1 3/64"	15/64"	5	000000000	00000


	5/16"-18	1 3/64"	15/64"	5	000000000	0000
	3/8"-16	1 3/64"	15/64"	5	000000000	0000
	M6 × 1 mm	1 3/64"	15/64"	5	000000000	0000
	M8 × 1.25 mm	1 3/64"	15/64"	5	000000000	0000
	M10 × 1.5 mm	1 3/64"	15/64"	5	000000000	0000