N38SH Magnets | McMaster-Carr

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78 Products

About Magnets

Choose a magnet with the right strength, material, and temperature resistance for your application.

Mount Type

Plain Back

Our standard magnets to hang, secure, and position metal objects

61 products

Unthreaded Hole

Mount with pins, bolts, or rivets

17 products

Magnetic Pull Rating

Super Light

Often used as refrigerator magnets or inside electronics

9 products

Light

Hang small hand tools or use as pocket retrievers for small parts

49 products

Neodymium Rectangle Magnets

Unmatched strength in a compact shape. These magnets have the highest strength-to-size ratio of any magnet, delivering powerful pull force even in tight spaces. Their flat, rectangular shape creates a strong, even pull across surfaces and fits easily into slots or grooves. However, they may lose magnetic strength at high temperatures. Also known as rare earth magnets.

Warning: Maximum pull ratings are based on direct contact with rust-free, unpainted iron surfaces. Variations in material condition will significantly reduce these ratings. Do not use for lifting over people.

Standard Magnets


	Magnetized Through Thickness

N38SH—These magnets are less likely than other grades to lose magnetic strength when exposed to temperatures up to 300°F.

Magnetized Through Thickness—Magnetized from one flat face to the other, these magnets deliver a concentrated magnetic force. They’re best for direct contact with flat surfaces.

Nickel Plated—With a nickel-plated finish, these magnets stand up to solvents, salt water, and chemicals better than uncoated neodymium. The plating may wear off over time, so these are not recommended for applications with a lot of friction or wear.

Uncoated—Apply whatever finish best guards against rust and wear in your environment. If left uncoated, expect corrosion and less durability.

									Each
	Wd.	Lg.	Max. Pull, lbf	Max. Temp., ° F	Magnet Grade	Direction of Magnetization	Finish		1-49	50-Up
0.1" Thick



		1/4"	1/4"	1.7	300	N38SH	Through Thickness	Nickel Plated	5848K51	00000	00000


		1/4"	1/4"	1.7	300	N38SH	Through Thickness	Uncoated	5848K31	0000	0000
		1/4"	5/8"	3	300	N38SH	Through Thickness	Nickel Plated	5848K78	0000	0000
		1/4"	5/8"	3	300	N38SH	Through Thickness	Uncoated	5848K77	0000	0000
		1/4"	3/4"	3	300	N38SH	Through Thickness	Nickel Plated	5848K82	0000	0000
		1/4"	3/4"	3	300	N38SH	Through Thickness	Uncoated	5848K81	0000	0000
		1/4"	1"	4	300	N38SH	Through Thickness	Nickel Plated	5848K68	0000	0000
		1/4"	1"	4	300	N38SH	Through Thickness	Uncoated	5848K67	0000	0000
		1/4"	2"	6	300	N38SH	Through Thickness	Nickel Plated	5848K74	00000	0000
		1/4"	2"	6	300	N38SH	Through Thickness	Uncoated	5848K73	00000	0000
		3/8"	3/8"	3	300	N38SH	Through Thickness	Nickel Plated	5848K14	0000	0000


		3/8"	3/8"	3	300	N38SH	Through Thickness	Uncoated	5848K13	0000	0000
		1/2"	1/2"	4	300	N38SH	Through Thickness	Nickel Plated	5848K18	0000	0000
		1/2"	1/2"	4	300	N38SH	Through Thickness	Uncoated	5848K17	0000	0000
		5/8"	5/8"	5	300	N38SH	Through Thickness	Nickel Plated	5848K24	0000	0000
		5/8"	5/8"	5	300	N38SH	Through Thickness	Uncoated	5848K23	0000	0000
		3/4"	3/4"	6	300	N38SH	Through Thickness	Nickel Plated	5848K28	00000	00000
		3/4"	3/4"	6	300	N38SH	Through Thickness	Uncoated	5848K27	00000	00000
		1"	1"	8	300	N38SH	Through Thickness	Nickel Plated	5848K66	00000	00000
		1"	1"	8	300	N38SH	Through Thickness	Uncoated	5848K65	00000	00000


		1/8" Thick



				1/8"	1/8"	1.5	300	N38SH	Through Thickness	Nickel Plated	5848K41	0000	0000


				1/4"	1/4"	2.7	300	N38SH	Through Thickness	Nickel Plated	5848K12	0000	0000
				1/4"	1/4"	2.7	300	N38SH	Through Thickness	Uncoated	5848K11	0000	0000
				3/8"	3/8"	4	300	N38SH	Through Thickness	Nickel Plated	5848K16	0000	0000
				3/8"	3/8"	4	300	N38SH	Through Thickness	Uncoated	5848K15	0000	0000
				5/8"	5/8"	6	300	N38SH	Through Thickness	Nickel Plated	5848K26	00000	0000
				5/8"	5/8"	6	300	N38SH	Through Thickness	Uncoated	5848K25	00000	0000
				3/4"	3/4"	8	300	N38SH	Through Thickness	Nickel Plated	5848K62	00000	00000
				3/4"	3/4"	8	300	N38SH	Through Thickness	Uncoated	5848K61	00000	0000


				0.21" Thick



						1/2"	1/2"	7	300	N38SH	Through Thickness	Nickel Plated	5848K52	0000	0000


						1/2"	1/2"	7	300	N38SH	Through Thickness	Uncoated	5848K32	0000	0000


						1/4" Thick



								1/4"	3/4"	9	300	N38SH	Through Thickness	Nickel Plated	5848K84	00000	00000


								1/4"	3/4"	9	300	N38SH	Through Thickness	Uncoated	5848K83	0000	0000
1/4"								1"	10	300	N38SH	Through Thickness	Nickel Plated	5848K72	00000	0000
1/4"	1"							10	300	N38SH	Through Thickness	Uncoated	5848K71	0000	0000
1/4"	2"							15	300	N38SH	Through Thickness	Nickel Plated	5848K76	00000	00000
1/4"	2"							15	300	N38SH	Through Thickness	Uncoated	5848K75	00000	00000
1/2"	1/2"							10	300	N38SH	Through Thickness	Nickel Plated	5848K22	00000	00000
1/2"	1/2"							10	300	N38SH	Through Thickness	Uncoated	5848K21	0000	0000


0.32" Thick



								3/4"	3/4"	16	300	N38SH	Through Thickness	Nickel Plated	5848K53	00000	00000


								3/4"	3/4"	16	300	N38SH	Through Thickness	Uncoated	5848K33	00000	00000


								3/8" Thick



										1"	1"	23	300	N38SH	Through Thickness	Nickel Plated	58585K31	00000	00000


										1"	1"	23	300	N38SH	Through Thickness	Uncoated	58585K61	00000	00000


										1/2" Thick



		2"	2"									65	300	N38SH	Through Thickness	Nickel Plated	5848K54	000000	00000


		2"	2"									65	300	N38SH	Through Thickness	Uncoated	5848K34	000000	00000


		1" Thick



												2"	2"	75	300	N38SH	Through Thickness	Nickel Plated	58585K41	000000	000000


												2"	2"	75	300	N38SH	Through Thickness	Uncoated	58585K71	000000	000000

Neodymium Disc Magnets

Unmatched strength in a compact shape. These magnets have the highest strength-to-size ratio of any magnet, delivering powerful pull force even in tight spaces. Their flat, round shape creates a strong, even pull across surfaces for reliable holding power. However, they may lose magnetic strength at high temperatures. Also known as rare earth magnets.

Standard Magnets


	Magnetized Through Thickness

N38SH—These magnets are less likely than other grades to lose magnetic strength when exposed to temperatures up to 300°F.

Magnetized Through Thickness—Magnetized from one flat face to the other, these magnets deliver a concentrated magnetic force. They’re best for direct contact with flat surfaces.

								Each
	OD	Max. Pull, lbf	Max. Temp., ° F	Magnet Grade	Direction of Magnetization	Finish		1-49	50-Up
0.04" Thick



		0.1"	0.3	300	N38SH	Through Thickness	Nickel Plated	5862K74	00000	00000


		1/8"	0.4	300	N38SH	Through Thickness	Nickel Plated	5862K77	0000	0000


		1/16" Thick



				5/64"	0.4	300	N38SH	Through Thickness	Nickel Plated	5862K72	0000	0000


				0.1"	0.5	300	N38SH	Through Thickness	Nickel Plated	5862K75	0000	0000
				1/4"	1.3	300	N38SH	Through Thickness	Nickel Plated	5862K79	0000	0000
				3/4"	3	300	N38SH	Through Thickness	Nickel Plated	5862K892	0000	0000


				0.08" Thick



						0.32"	2.2	300	N38SH	Through Thickness	Nickel Plated	5862K83	0000	0000


						1/8" Thick



								5/8"	10	300	N38SH	Through Thickness	Nickel Plated	5862K86	0000	0000


								3/4"	8	300	N38SH	Through Thickness	Nickel Plated	5862K893	00000	0000
								7/8"	9	300	N38SH	Through Thickness	Nickel Plated	5862K896	00000	00000


								1/4" Thick



										5/8"	13	300	N38SH	Through Thickness	Nickel Plated	5862K87	00000	00000


										7/8"	19	300	N38SH	Through Thickness	Nickel Plated	5862K897	00000	00000


										1/2" Thick



												5/8"	27	300	N38SH	Through Thickness	Nickel Plated	5862K88	00000	00000


												3/4" Thick



														1/2"	32	300	N38SH	Through Thickness	Nickel Plated	5862K84	00000	0000

Magnets With Unthreaded Hole


	Magnetized Through Thickness

N38SH—These magnets are less likely than other grades to lose magnetic strength when exposed to temperatures up to 300°F.

Magnetized Through Thickness—Magnetized from one flat face to the other, these magnets deliver a concentrated magnetic force. They’re best for direct contact with flat surfaces.

										Each
	OD	Hole Dia.	Max. Pull, lbf	Max. Temp., ° F	Magnet Grade	Direction of Magnetization	Mounting Hole Style	Finish		1-49	50-Up
0.1" Thick



		1/4"	1/8"	1.3	300	N38SH	Through Thickness	Straight	Nickel Plated	3360K11	00000	00000


		3/8"	1/8"	2.2	300	N38SH	Through Thickness	Straight	Nickel Plated	3360K7	0000	0000
		1/2"	1/8"	3	300	N38SH	Through Thickness	Straight	Nickel Plated	3360K72	0000	0000
		1/2"	0.2"	3	300	N38SH	Through Thickness	Straight	Nickel Plated	3360K31	0000	0000
		1"	1/8"	7	300	N38SH	Through Thickness	Straight	Nickel Plated	3360K75	0000	0000
		1"	1/4"	6	300	N38SH	Through Thickness	Straight	Nickel Plated	3360K77	00000	00000
		1"	1/2"	7	300	N38SH	Through Thickness	Straight	Nickel Plated	3360K51	00000	00000


		1/4" Thick



				1/4"	1/8"	2.3	300	N38SH	Through Thickness	Straight	Nickel Plated	3360K21	0000	0000


				3/8"	1/8"	5	300	N38SH	Through Thickness	Straight	Nickel Plated	3360K71	0000	0000
				1/2"	1/8"	8	300	N38SH	Through Thickness	Straight	Nickel Plated	3360K73	0000	0000
				1/2"	0.2"	8	300	N38SH	Through Thickness	Straight	Nickel Plated	3360K41	00000	00000
				1"	1/8"	19	300	N38SH	Through Thickness	Straight	Nickel Plated	3360K76	00000	00000
				1"	1/4"	16	300	N38SH	Through Thickness	Straight	Nickel Plated	3360K78	00000	00000
				1"	1/2"	20	300	N38SH	Through Thickness	Straight	Nickel Plated	3360K61	00000	00000


				1/2" Thick



						1/2"	1/8"	16	300	N38SH	Through Thickness	Straight	Nickel Plated	3360K74	00000	00000


						1"	1/2"	21	300	N38SH	Through Thickness	Straight	Nickel Plated	3360K79	00000	00000


						3/4" Thick



								1"	1/2"	32	300	N38SH	Through Thickness	Straight	Nickel Plated	3360K8	00000	00000