PCB Spacers | McMaster-Carr

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Hole Diameter

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Maximum Temperature

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Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

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Base Length

Mounting Hole Location

127 Products

Shape

Hex

Grip the flat sides with a wrench to securely tighten

14 products

Round

Create a flush connection between components

113 products

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Flame Retardant

Meet UL standards for flame retardance

118 products

High Temperature

Won't melt or become brittle at temperatures up to 1,700° F

19 products

Double-Locking Snap-In Standoffs

Snap both ends into place for a quick, permanent connection. These standoffs hold panels and circuit boards at a fixed height in electronics and enclosures. They're made of plastic, so they're nonconductive and won't allow electrical currents to pass between circuit boards. Also known as snap-in supports.

Nylon 6/6—Lightweight and stand up to daily wear and tear. Nylon swells and weakens when exposed to moisture, so these standoffs are best for dry environments.

Nylon 6/6 with Additive—An additive helps these standoffs resist higher temperatures than standard nylon.

	Lg.	For Hole Dia.	For Panel Thk.	Temp. Range, ° F	Flammability Rating	Pkg. Qty.		Pkg.
Nylon 6/6



		1/8"	1/8"	1/16"	-40 to 185	UL 94 V-0	10	0000000	00000


		3/16"	1/8"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
		1/4"	1/8"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
		5/16"	1/8"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
		3/8"	1/8"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
		7/16"	1/8"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
		1/2"	1/8"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
		9/16"	1/8"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
		5/8"	1/8"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
		3/4"	1/8"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
		7/8"	1/8"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000


		1"	1/8"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
		1 1/8"	1/8"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
		1 1/4"	1/8"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
		1 3/8"	1/8"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
		1 1/2"	1/8"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
		2 mm	2.5 mm	1.6 mm	-40 to 185	UL 94 V-0	10	0000000	0000
		3 mm	2.5 mm	1.6 mm	-40 to 185	UL 94 V-0	10	0000000	0000
		4 mm	2.5 mm	1.6 mm	-40 to 185	UL 94 V-0	10	0000000	0000
		5 mm	2.5 mm	1.6 mm	-40 to 185	UL 94 V-0	10	0000000	0000
		6 mm	2.5 mm	1.6 mm	-40 to 185	UL 94 V-0	10	0000000	0000


		7 mm	2.5 mm	1.6 mm	-40 to 185	UL 94 V-0	10	0000000	0000
		8 mm	2.5 mm	1.6 mm	-40 to 185	UL 94 V-0	10	0000000	0000
		9 mm	2.5 mm	1.6 mm	-40 to 185	UL 94 V-0	10	0000000	0000
		10 mm	2.5 mm	1.6 mm	-40 to 185	UL 94 V-0	10	0000000	0000
		12 mm	2.5 mm	1.6 mm	-40 to 185	UL 94 V-0	10	0000000	0000
		14 mm	2.5 mm	1.6 mm	-40 to 185	UL 94 V-0	10	0000000	0000
		16 mm	2.5 mm	1.6 mm	-40 to 185	UL 94 V-0	10	0000000	0000
		18 mm	2.5 mm	1.6 mm	-40 to 185	UL 94 V-0	10	0000000	0000
		20 mm	2.5 mm	1.6 mm	-40 to 185	UL 94 V-0	10	0000000	0000
		22 mm	2.5 mm	1.6 mm	-40 to 185	UL 94 V-0	10	0000000	0000


		26.5 mm	2.5 mm	1.6 mm	-40 to 185	UL 94 V-0	10	0000000	0000


		Nylon 6/6 with Additive



				1/8"	1/8"	1/16"	-40 to 500	UL 94 V-0	10	0000000	0000


				3/16"	1/8"	1/16"	-40 to 500	UL 94 V-0	10	0000000	0000
				1/4"	1/8"	1/16"	-40 to 500	UL 94 V-0	10	0000000	0000
				5/16"	1/8"	1/16"	-40 to 500	UL 94 V-0	10	0000000	0000
				3/8"	1/8"	1/16"	-40 to 500	UL 94 V-0	10	0000000	0000
				7/16"	1/8"	1/16"	-40 to 500	UL 94 V-0	10	0000000	0000
				1/2"	1/8"	1/16"	-40 to 500	UL 94 V-0	10	0000000	0000
				9/16"	1/8"	1/16"	-40 to 500	UL 94 V-0	10	0000000	0000
				5/8"	1/8"	1/16"	-40 to 500	UL 94 V-0	10	0000000	0000
				3/4"	1/8"	1/16"	-40 to 500	UL 94 V-0	10	0000000	0000
				3 mm	4 mm	1.6 mm	-40 to 500	UL 94 V-0	10	0000000	0000


4 mm				4 mm	1.6 mm	-40 to 500	UL 94 V-0	10	0000000	0000
6 mm	4 mm			1.6 mm	-40 to 500	UL 94 V-0	10	0000000	0000
8 mm	4 mm			1.6 mm	-40 to 500	UL 94 V-0	10	0000000	0000
10 mm	4 mm			1.6 mm	-40 to 500	UL 94 V-0	10	0000000	0000
12 mm	4 mm			1.6 mm	-40 to 500	UL 94 V-0	10	0000000	0000
14 mm	4 mm			1.6 mm	-40 to 500	UL 94 V-0	10	0000000	0000
16 mm	4 mm			1.6 mm	-40 to 500	UL 94 V-0	10	0000000	0000
18 mm	4 mm			1.6 mm	-40 to 500	UL 94 V-0	10	0000000	0000

Adhesive Snap-In Standoffs

Assemble components in tight or temporary setups without using a single tool. A strong adhesive securely attaches the base to flat surfaces, while the snap-in end connects to circuit boards. These standoffs are made of plastic, so they're nonconductive and won't allow electrical currents to pass between circuit boards. Also known as snap-in supports.

Nylon 6/6—Lightweight and stand up to daily wear and tear. Nylon swells and weakens when exposed to moisture, so these standoffs are best for dry environments.

				Base
	Lg.	For Hole Dia.	For Panel Thk.	Lg.	Wd.	Temp. Range, ° F	Adhesive Type	Flammability Rating	Pkg. Qty.		Pkg.
Nylon 6/6



		3/16"	3/32"	1/16"	1/2"	1/2"	32 to 185	Acrylic	UL 94 V-2	10	000000000	00000


		3/16"	1/8"	1/16"	1/2"	1/2"	32 to 185	Acrylic	UL 94 V-2	10	000000000	0000
		3/16"	5/32"	1/16"	3/4"	3/4"	32 to 185	Acrylic	UL 94 V-2	10	000000000	0000
		1/4"	3/32"	1/16"	1/2"	1/2"	32 to 185	Acrylic	UL 94 V-2	10	000000000	0000
		1/4"	1/8"	1/16"	1/2"	1/2"	32 to 185	Acrylic	UL 94 V-2	10	000000000	0000
		1/4"	5/32"	1/16"	3/4"	3/4"	32 to 185	Acrylic	UL 94 V-2	10	000000000	0000
		5/16"	1/8"	1/16"	1/2"	1/2"	32 to 185	Acrylic	UL 94 V-2	10	000000000	0000
		3/8"	3/32"	1/16"	1/2"	1/2"	32 to 185	Acrylic	UL 94 V-2	10	000000000	0000
		3/8"	1/8"	1/16"	1/2"	1/2"	32 to 185	Acrylic	UL 94 V-2	10	000000000	0000
		3/8"	5/32"	1/16"	3/4"	3/4"	32 to 185	Acrylic	UL 94 V-2	10	000000000	0000
		7/16"	3/32"	1/16"	1/2"	1/2"	32 to 185	Acrylic	UL 94 V-2	10	000000000	0000


		7/16"	1/8"	1/16"	1/2"	1/2"	32 to 185	Acrylic	UL 94 V-2	10	000000000	0000
		1/2"	3/32"	1/16"	1/2"	1/2"	32 to 185	Acrylic	UL 94 V-2	10	000000000	0000
		1/2"	1/8"	1/16"	1/2"	1/2"	32 to 185	Acrylic	UL 94 V-2	25	000000000	00000
		1/2"	5/32"	1/16"	3/4"	3/4"	32 to 185	Acrylic	UL 94 V-2	10	000000000	0000
		9/16"	1/8"	1/16"	1/2"	1/2"	32 to 185	Acrylic	UL 94 V-2	10	000000000	0000
		5/8"	3/32"	1/16"	1/2"	1/2"	32 to 185	Acrylic	UL 94 V-2	10	000000000	0000
		5/8"	1/8"	1/16"	1/2"	1/2"	32 to 185	Acrylic	UL 94 V-2	10	000000000	0000
		5/8"	5/32"	1/16"	3/4"	3/4"	32 to 185	Acrylic	UL 94 V-2	10	000000000	0000
		3/4"	5/32"	1/16"	3/4"	3/4"	32 to 185	Acrylic	UL 94 V-2	10	000000000	0000
		7/8"	5/32"	1/16"	3/4"	3/4"	32 to 185	Acrylic	UL 94 V-2	10	000000000	0000


		1"	5/32"	1/16"	3/4"	3/4"	32 to 185	Acrylic	UL 94 V-2	10	000000000	0000
		1 1/8"	5/32"	1/16"	3/4"	3/4"	32 to 185	Acrylic	UL 94 V-2	10	000000000	0000

Self-Tapping Adhesive Snap-In Standoffs


Center Mounting Hole	Corner Mounting Hole

Tightly mount circuit boards without drilling. Stick these standoffs to flat surfaces using the adhesive backing. Then, a screw cuts threads into the standoff as you drive it in, creating a tight hold. These standoffs are made of plastic, so they're nonconductive and won't allow electrical currents to pass between circuit boards. Also known as snap-in supports.

Nylon 6/6—Lightweight and stand up to daily wear and tear. Nylon swells and weakens when exposed to moisture, so these standoffs are best for dry environments.

		Base, mm
	Lg., mm	Lg.	Wd.	Max. Temp., ° F	Mounting Fasteners Included	Adhesive Type	Flammability Rating	For Screw Size	Pkg. Qty.		Pkg.
Nylon 6/6







				Center Mounting Hole

				5	20	20	175	No	Acrylic	UL 94 V-2	M3	10	000000	00000


				6	20	20	175	No	Acrylic	UL 94 V-2	M3	10	0000000	0000
				7	20	20	175	No	Acrylic	UL 94 V-2	M3	10	0000000	0000
				8	20	20	175	No	Acrylic	UL 94 V-2	M3	10	0000000	0000
				9	20	20	175	No	Acrylic	UL 94 V-2	M3	10	0000000	0000
				11	20	20	175	No	Acrylic	UL 94 V-2	M3	10	0000000	0000
				13	20	20	175	No	Acrylic	UL 94 V-2	M3	10	0000000	0000
				15	20	20	175	No	Acrylic	UL 94 V-2	M3	10	0000000	0000
				16	20	20	175	No	Acrylic	UL 94 V-2	M3	10	0000000	0000
				19	20	20	175	No	Acrylic	UL 94 V-2	M3	10	0000000	0000




						Corner Mounting Hole

						5	14	14	175	Yes	Acrylic	UL 94 V-2	M2.5	4	0000000	0000


						6	20	20	175	Yes	Acrylic	UL 94 V-2	M3	4	0000000	0000
						10	14	14	175	Yes	Acrylic	UL 94 V-2	M2.5	4	0000000	0000
						10	20	20	175	Yes	Acrylic	UL 94 V-2	M3	4	0000000	0000
						11	25	25	175	Yes	Acrylic	UL 94 V-2	M4	4	0000000	0000
						15	20	20	175	Yes	Acrylic	UL 94 V-2	M3	4	0000000	0000
						20	20	20	175	Yes	Acrylic	UL 94 V-2	M3	4	0000000	0000
						20	25	25	175	Yes	Acrylic	UL 94 V-2	M4	4	0000000	0000

Stackable Snap-In Standoffs

Stack these nesting standoffs to create multi-level printed circuit board assemblies with adjustable height. A chamfered female end makes it easy to align components and add layers. The male end cuts threads into the female end when you screw one standoff into another, locking parts in place without screws or inserts. These standoffs are made of plastic, so they're nonconductive and won't allow electrical currents to pass between circuit boards. Also known as snap-in supports.

Nylon 6/6—Lightweight and stand up to daily wear and tear. Nylon swells and weakens when exposed to moisture, so these standoffs are best for dry environments.

	For Hole Dia.	For Panel Thk.	Temp. Range, ° F	For Screw Size	Pkg. Qty.		Pkg.
Nylon 6/6



	1/8"	3/16"	1/16"	-40 to 125	No. 4	10	0000000	00000


	3/16"	3/16"	1/16"	-40 to 125	No. 4	10	0000000	0000
	1/4"	3/16"	1/16"	-40 to 125	No. 4	10	0000000	0000
	1/4"	1/4"	1/16"	-40 to 125	No. 6	10	0000000	0000
	3/8"	3/16"	1/16"	-40 to 125	No. 4	10	0000000	0000
	3/8"	1/4"	1/16"	-40 to 125	No. 6	10	0000000	0000
	1/2"	3/16"	1/16"	-40 to 125	No. 4	10	0000000	0000
	1/2"	1/4"	1/16"	-40 to 125	No. 6	10	0000000	0000
	5/8"	3/16"	1/16"	-40 to 125	No. 4	10	0000000	0000

High-Tension Snap-In Standoffs

Snap in and stay put. Flexible wings on one end grip the inside of mounting holes so they won't loosen. The opposite end snaps in and out of components for quick board swaps, repairs, or upgrades without damaging the panel. These standoffs are made of plastic, so they're nonconductive and won't allow electrical currents to pass between circuit boards. Also known as snap-in supports.

Nylon 6/6—Lightweight and stand up to daily wear and tear. Nylon swells and weakens when exposed to moisture, so these standoffs are best for dry environments.

		For Hole Dia.
	Lg.	(A)	(B)	For Panel Thk.	Temp. Range, ° F	Flammability Rating	Pkg. Qty.		Pkg.
Nylon 6/6



		3/16"	3/16"	5/32"	1/16"	-40 to 185	UL 94 V-0	10	0000000	00000


		1/4"	3/16"	5/32"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
		3/8"	3/16"	5/32"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
		1/2"	3/16"	5/32"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
		5/8"	3/16"	5/32"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
		3/4"	3/16"	5/32"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
		7/8"	3/16"	5/32"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
		1"	3/16"	5/32"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000

Self-Tapping Snap-In Standoffs


		Partially Threaded

No need for pre-drilled holes— these standoffs snap securely into place on circuit boards. Drive a screw in to cut threads in the standoff and create a permanent hold on panels and enclosures. Disconnect the snap-in end as needed for quick repairs or upgrades. These snap-ins are made of plastic, so they're nonconductive and won't allow electrical currents to pass between circuit boards. Also known as snap-in supports.

Nylon 6/6—Lightweight and stand up to daily wear and tear. Nylon swells and weakens when exposed to moisture, so these standoffs are best for dry environments.

	Threading	Min. Thread Lg.	For Hole Dia.	For Panel Thk.	Temp. Range, ° F	Flammability Rating	For Screw Size	Pkg. Qty.		Pkg.
Nylon 6/6



	1/4"	Partially Threaded	13/64"	5/32"	1/16"	-40 to 185	UL 94 V-0	No. 6	10	0000000	00000


	3/8"	Partially Threaded	5/16"	5/32"	1/16"	-40 to 185	UL 94 V-0	No. 6	10	0000000	0000
	1/2"	Partially Threaded	5/16"	5/32"	1/16"	-40 to 185	UL 94 V-0	No. 6	10	0000000	0000
	5/8"	Partially Threaded	5/16"	5/32"	1/16"	-40 to 185	UL 94 V-0	No. 6	10	0000000	0000
	3/4"	Partially Threaded	5/16"	5/32"	1/16"	-40 to 185	UL 94 V-0	No. 6	10	0000000	0000
	7/8"	Partially Threaded	5/16"	5/32"	1/16"	-40 to 185	UL 94 V-0	No. 6	10	0000000	0000
	1"	Partially Threaded	5/16"	5/32"	1/16"	-40 to 185	UL 94 V-0	No. 6	10	0000000	0000

Male Threaded Snap-In Standoffs

Combine the speed of snap-in mounting with the strength of a threaded connection. The male end screws into a tapped hole, while the opposite end snaps securely into a circuit board. These standoffs are made of plastic, so they're nonconductive and won't allow electrical currents to pass between circuit boards. Also known as snap-in supports.

Nylon 6/6—Lightweight and stand up to daily wear and tear. Nylon swells and weakens when exposed to moisture, so these standoffs are best for dry environments.

	Temp. Range, ° F	Flammability Rating	Pkg. Qty.		Pkg.
Nylon 6/6







	8-32

	1/2"	5/32"	1/16"	-40 to 185	UL 94 V-0	10	0000000	00000


	5/8"	5/32"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
	3/4"	5/32"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
	7/8"	5/32"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000
	1"	5/32"	1/16"	-40 to 185	UL 94 V-0	10	0000000	0000

Rest On Snap-In Standoffs

Support heavy or oversized printed circuit boards. Snap these standoffs into mounting holes to reinforce large board centers and maintain consistent spacing under loads. These standoffs are made of plastic, so they're nonconductive and won't allow electrical currents to pass between circuit boards. Also known as snap-in supports.

Nylon 6/6—Lightweight and stand up to daily wear and tear. Nylon swells and weakens when exposed to moisture, so these standoffs are best for dry environments.

	For Hole Dia.	For Panel Thk.	Temp. Range, ° F	Flammability Rating	Pkg. Qty.		Pkg.
Nylon 6/6



	1/4"	3/16"	5/64"	-40 to 185	UL 94 V-0	10	0000000	00000


	3/8"	3/16"	5/64"	-40 to 185	UL 94 V-0	10	0000000	0000
	1/2"	3/16"	5/64"	-40 to 185	UL 94 V-0	10	0000000	0000
	5/8"	3/16"	5/64"	-40 to 185	UL 94 V-0	10	0000000	0000
	3/4"	3/16"	5/64"	-40 to 185	UL 94 V-0	10	0000000	0000
	7/8"	3/16"	5/64"	-40 to 185	UL 94 V-0	10	0000000	0000