Projection Weld Nuts | McMaster-Carr

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216 Products

Weld Nut Shape

Hex

With three evenly spaced projections for consistent welding

73 products

Square

The strongest hold in our offering

32 products

Weld Nut Shape

Rectangle

Add permanent threads in narrow spaces

66 products

Round

No edges to snag on nearby objects, plus a smooth appearance

33 products

Weld Nuts

Add permanent threads to thin metal with our go-to weld nuts. Unlike press-fit and rivet nuts, these nuts fuse to the base metal, so they won’t twist and pull out. Three evenly spaced projections concentrate heat away from the threads to prevent them from deforming and create consistent welds. All have a collar pilot that guides the nut into the hole, holds it in place while welding, and protects the threads from weld spatter. You can also install them on thick pieces of metal.

Steel—Best for dry environments since moisture will cause them to rust. Made of uncoated steel, these nuts require minimal prep. Weld them to uncoated steel surfaces.

18-8 Stainless Steel—Suitable for outdoor use, these nuts resist rust from water and mild chemicals. Weld them to stainless steel surfaces.

Grade 2 Titanium—The best choice when you need a high strength-to-weight ratio, these nuts are 40% lighter than steel nuts. They’re also our most corrosion-resistant weld nuts, standing up to salt water, strong acids, and other harsh chemicals. Weld them to titanium surfaces.

				Collar
	Thread Size	Wd.	Ht.	Dia.	Ht.	For Hole Dia.	Specs. Met	Pkg. Qty.		Pkg.
Steel



		8-32	1/2"	3/16"	13/32"	0.04"	27/64"	ASME B1.1	10	000000000	00000


		10-24	1/2"	3/16"	13/32"	0.04"	27/64"	ASME B1.1	25	000000000	00000
		10-32	1/2"	3/16"	13/32"	0.04"	27/64"	ASME B1.1	25	000000000	00000
		1/4"-20	1/2"	3/16"	13/32"	0.047"	27/64"	ASME B1.1	50	000000000	00000
		1/4"-20	1/2"	3/16"	13/32"	0.085"	27/64"	ASME B1.1	25	000000000	00000
		1/4"-28	1/2"	3/16"	13/32"	0.04"	27/64"	ASME B1.1	25	000000000	00000
		5/16"-18	9/16"	7/32"	15/32"	0.047"	31/64"	ASME B1.1	50	000000000	00000
		5/16"-18	9/16"	7/32"	15/32"	0.085"	31/64"	ASME B1.1	25	000000000	00000
		5/16"-24	9/16"	7/32"	15/32"	0.085"	31/64"	ASME B1.1	25	000000000	00000
		3/8"-16	5/8"	1/4"	17/32"	0.047"	35/64"	ASME B1.1	50	000000000	00000
		3/8"-16	5/8"	1/4"	17/32"	0.085"	35/64"	ASME B1.1	25	000000000	00000


		3/8"-24	5/8"	1/4"	17/32"	0.05"	35/64"	ASME B1.1	25	000000000	00000
		7/16"-14	3/4"	21/64"	21/32"	0.05"	43/64"	ASME B1.1	25	000000000	00000
		7/16"-14	3/4"	21/64"	21/32"	0.085"	43/64"	ASME B1.1	10	000000000	00000
		7/16"-20	3/4"	21/64"	21/32"	0.05"	43/64"	ASME B1.1	25	000000000	00000
		7/16"-20	3/4"	21/64"	21/32"	0.085"	43/64"	ASME B1.1	10	000000000	00000
		1/2"-13	13/16"	3/8"	23/32"	0.063"	47/64"	ASME B1.1	25	000000000	00000
		5/8"-11	15/16"	29/64"	25/32"	0.06"	51/64"	ASME B1.1	10	000000000	00000
		5/8"-11	15/16"	29/64"	25/32"	0.085"	51/64"	ASME B1.1	10	000000000	00000
		3/4"-10	1 15/64"	5/8"	31/32"	0.06"	63/64"	ASME B1.1	5	000000000	00000
		M3 × 0.5 mm	7.5 mm	2.45 mm	4.5 mm	0.55 mm	4.5 mm	DIN 929	100	000000000	00000


		M4 × 0.7 mm	9 mm	2.85 mm	6 mm	0.65 mm	6 mm	DIN 929	100	000000000	00000
		M5 × 0.8 mm	10 mm	3.3 mm	7 mm	0.7 mm	7 mm	DIN 929	100	000000000	00000
		M6 × 1 mm	11 mm	4.25 mm	8 mm	0.75 mm	8 mm	DIN 929	50	000000000	0000
		M8 × 1.25 mm	14 mm	5.6 mm	10.5 mm	0.9 mm	10.5 mm	DIN 929	50	000000000	00000
		M10 × 1.25 mm	17 mm	6.85 mm	12.5 mm	1.15 mm	12.5 mm	DIN 929	25	000000000	00000
		M10 × 1.5 mm	17 mm	6.85 mm	12.5 mm	1.15 mm	12.5 mm	DIN 929	25	000000000	00000
		M12 × 1.75 mm	19 mm	8.6 mm	14.8 mm	1.4 mm	14.8 mm	DIN 929	25	000000000	00000
		M14 × 2 mm	22 mm	9.2 mm	16.8 mm	1.8 mm	16.8 mm	DIN 929	10	000000000	0000
		M16 × 2 mm	24 mm	11.2 mm	18.8 mm	1.8 mm	18.8 mm	DIN 929	10	000000000	00000


		18-8 Stainless Steel



				1/4"-20	1/2"	3/16"	13/32"	0.047"	27/64"	ASME B1.1	10	000000000	0000


				1/4"-28	1/2"	3/16"	13/32"	0.04"	27/64"	ASME B1.1	10	000000000	0000
				5/16"-18	9/16"	7/32"	15/32"	0.047"	31/64"	ASME B1.1	5	000000000	0000
				3/8"-16	5/8"	1/4"	17/32"	0.047"	35/64"	ASME B1.1	5	000000000	0000
				1/2"-13	13/16"	3/8"	23/32"	0.06"	47/64"	ASME B1.1	5	000000000	00000
				M3 × 0.5 mm	7.5 mm	2.5 mm	4.5 mm	0.55 mm	4.5 mm	DIN 929	100	000000000	00000
				M4 × 0.7 mm	9 mm	2.9 mm	6 mm	0.65 mm	6 mm	DIN 929	50	000000000	0000
				M5 × 0.8 mm	10 mm	3.3 mm	7 mm	0.7 mm	7 mm	DIN 929	50	000000000	00000
				M6 × 1 mm	11 mm	4.3 mm	8 mm	0.75 mm	8 mm	DIN 929	25	000000000	0000
				M8 × 1.25 mm	14 mm	5.6 mm	10.5 mm	0.9 mm	10.5 mm	DIN 929	25	000000000	00000
				M10 × 1.5 mm	17 mm	6.9 mm	12.5 mm	1.15 mm	12.5 mm	DIN 929	10	000000000	0000


				M12 × 1.75 mm	19 mm	8.6 mm	14.8 mm	1.4 mm	14.8 mm	DIN 929	10	000000000	00000
				M16 × 2 mm	24 mm	11.2 mm	18.8 mm	1.8 mm	18.8 mm	DIN 929	1	000000000	00000


Grade 2 Titanium



				10-24	1/2"	3/16"	13/32"	0.04"	13/32"	ASME B1.1	1	000000000	00000


				1/4"-20	1/2"	3/16"	13/32"	0.047"	13/32"	ASME B1.1	1	000000000	00000
				5/16"-18	9/16"	7/32"	15/32"	0.047"	15/32"	ASME B1.1	1	000000000	00000
				3/8"-16	5/8"	1/4"	17/32"	0.047"	17/32"	ASME B1.1	1	000000000	00000
				1/2"-13	13/16"	3/8"	23/32"	0.063"	23/32"	ASME B1.1	1	000000000	00000
				M6 × 1 mm	11 mm	4.3 mm	8 mm	0.75 mm	8 mm	DIN 929	1	000000000	00000
				M8 × 1.25 mm	14 mm	5.6 mm	10.5 mm	0.9 mm	10.5 mm	DIN 929	1	000000000	00000
				M10 × 1.5 mm	17 mm	6.9 mm	12.5 mm	1.15 mm	12.5 mm	DIN 929	1	000000000	00000

Square Weld Nuts

With four symmetrical projections, these nuts create the strongest hold in our offering. Unlike rectangular weld nuts, each projection is equidistant from the threads, so welds wrap evenly for extra strength and twist resistance. Projections concentrate heat away from the threads to prevent them from deforming and create consistent welds. All nuts have a collar pilot that guides them into the hole, holds them in place while welding, and protects the threads from weld spatter.

Steel—Best for dry environments since moisture will cause them to rust. Made of uncoated steel, these nuts require minimal prep. Weld them to uncoated steel surfaces.

				Collar
	Thread Size	Wd.	Ht.	Dia.	Ht.	For Hole Dia.	Specs. Met	Pkg. Qty.		Pkg.
Steel



		6-32	7/16"	1/8"	3/16"	0.046"	13/64"	ASME B1.1	25	000000000	000000


		8-32	7/16"	3/32"	13/64"	0.03"	7/32"	ASME B1.1	25	000000000	00000
		10-24	7/16"	9/64"	15/64"	0.046"	1/4"	ASME B1.1	25	000000000	00000
		10-32	7/16"	9/64"	15/64"	0.046"	1/4"	ASME B1.1	25	000000000	00000
		1/4"-20	1/2"	5/32"	13/32"	0.062"	27/64"	ASME B1.1	25	000000000	00000
		1/4"-20	1/2"	5/32"	13/32"	0.063"	27/64"	ASME B1.1	50	000000000	00000
		1/4"-28	1/2"	5/32"	13/32"	0.063"	27/64"	ASME B1.1	50	000000000	00000
		5/16"-18	9/16"	3/16"	15/32"	0.062"	31/64"	ASME B1.1	25	000000000	00000
		5/16"-18	9/16"	3/16"	15/32"	0.063"	31/64"	ASME B1.1	50	000000000	00000
		5/16"-24	9/16"	3/16"	15/32"	0.062"	31/64"	ASME B1.1	25	000000000	00000
		5/16"-24	9/16"	3/16"	15/32"	0.063"	31/64"	ASME B1.1	50	000000000	00000


		3/8"-16	5/8"	1/4"	17/32"	0.062"	35/64"	ASME B1.1	10	000000000	0000
		3/8"-16	5/8"	1/4"	17/32"	0.063"	35/64"	ASME B1.1	25	000000000	00000
		3/8"-24	5/8"	1/4"	17/32"	0.062"	35/64"	ASME B1.1	25	000000000	00000
		3/8"-24	5/8"	1/4"	17/32"	0.063"	35/64"	ASME B1.1	50	000000000	00000
		7/16"-14	3/4"	5/16"	21/32"	0.062"	43/64"	ASME B1.1	10	000000000	0000
		7/16"-14	3/4"	5/16"	21/32"	0.063"	43/64"	ASME B1.1	25	000000000	00000
		7/16"-20	3/4"	5/16"	21/32"	0.062"	43/64"	ASME B1.1	10	000000000	00000
		7/16"-20	3/4"	5/16"	21/32"	0.063"	43/64"	ASME B1.1	25	000000000	00000
		1/2"-13	13/16"	3/8"	23/32"	0.062"	47/64"	ASME B1.1	10	000000000	00000
		1/2"-13	13/16"	3/8"	23/32"	0.063"	47/64"	ASME B1.1	25	000000000	00000


		1/2"-20	13/16"	3/8"	23/32"	0.062"	47/64"	ASME B1.1	10	000000000	00000
		1/2"-20	13/16"	3/8"	23/32"	0.063"	47/64"	ASME B1.1	25	000000000	00000
		5/8"-11	7/8"	7/16"	25/32"	0.094"	51/64"	ASME B1.1	25	000000000	00000
		M4 × 0.7 mm	7 mm	3.5 mm	—	—	4.3 mm	DIN 928	50	000000000	00000
		M5 × 0.8 mm	9 mm	4.2 mm	—	—	5.3 mm	DIN 928	100	000000000	00000
		M6 × 1 mm	10 mm	5 mm	—	—	6.4 mm	DIN 928	100	000000000	00000
		M8 × 1.25 mm	14 mm	6.5 mm	—	—	8.4 mm	DIN 928	100	000000000	00000
		M10 × 1.5 mm	17 mm	8 mm	—	—	10.5 mm	DIN 928	25	000000000	0000
		M12 × 1.75 mm	19 mm	9.5 mm	—	—	13 mm	DIN 928	25	000000000	00000
		M14 × 2 mm	22 mm	11 mm	—	—	16.8 mm	DIN 928	5	000000000	0000


		M16 × 2 mm	24 mm	13 mm	—	—	18.8 mm	DIN 928	5	000000000	00000

Low-Profile Rectangular Weld Nuts

Weld permanent threads in channels and other tight spaces without adding a barrel bump that gets in the way. These nuts have a short barrel that tucks under low surfaces and a slim footprint that fits between narrow channel walls.

Steel—Best for dry environments since moisture will cause them to rust. Made of uncoated steel, these nuts require minimal prep. Weld them to uncoated steel surfaces.

18-8 Stainless Steel—Suitable for outdoor use, these nuts resist rust from water and mild chemicals. Weld them to stainless steel surfaces.

Number of Projections—More projections lead to more consistent welds by concentrating heat and protecting the threads from deforming.

			Base			Barrel
	Thread Size	No. of Projections	Lg.	Wd.	Thk.	Dia.	Ht.	For Hole Dia.	Pkg. Qty.		Pkg.
Steel



		6-32	2	5/8"	3/8"	3/32"	3/16"	1/32"	3/16"	25	000000000	00000


		8-32	2	5/8"	3/8"	3/32"	13/64"	1/32"	13/64"	25	000000000	0000
		10-24	2	5/8"	3/8"	3/32"	15/64"	1/32"	15/64"	25	000000000	0000
		10-32	2	5/8"	3/8"	3/32"	15/64"	1/32"	15/64"	25	000000000	0000
		1/4"-20	2	13/16"	1/2"	1/8"	19/64"	1/16"	19/64"	25	000000000	0000
		1/4"-28	2	13/16"	1/2"	1/8"	19/64"	1/16"	19/64"	10	000000000	0000
		5/16"-18	2	63/64"	5/8"	9/64"	23/64"	3/32"	23/64"	25	000000000	00000
		5/16"-24	2	63/64"	5/8"	9/64"	23/64"	3/32"	23/64"	10	000000000	0000
		3/8"-16	2	63/64"	5/8"	9/64"	7/16"	3/32"	7/16"	25	000000000	0000
		3/8"-24	2	63/64"	5/8"	9/64"	7/16"	3/32"	7/16"	10	000000000	0000
		1/2"-13	2	1 1/8"	3/4"	3/16"	37/64"	3/32"	19/32"	10	000000000	00000


		M3.5 × 0.6 mm	2	16 mm	9.6 mm	2.4 mm	4.8 mm	0.8 mm	4.8 mm	10	000000000	0000
		M4 × 0.7 mm	2	16 mm	9.6 mm	2.4 mm	5.2 mm	0.8 mm	5.2 mm	25	000000000	0000
		M5 × 0.8 mm	2	16 mm	9.6 mm	2.4 mm	6 mm	0.8 mm	6 mm	25	000000000	0000
		M6 × 1 mm	2	20.5 mm	13 mm	3.2 mm	7.6 mm	1.2 mm	7.6 mm	10	000000000	0000
		M8 × 1.25 mm	2	25 mm	16 mm	3.6 mm	9.2 mm	2 mm	9.2 mm	25	000000000	00000
		M12 × 1.75 mm	2	28.5 mm	19 mm	4.8 mm	14 mm	2.4 mm	14 mm	10	000000000	00000


		18-8 Stainless Steel



				8-32	2	5/8"	3/8"	3/32"	13/64"	1/32"	7/32"	10	000000000	0000


				10-24	2	5/8"	3/8"	3/32"	15/64"	1/32"	1/4"	10	000000000	0000
				10-32	2	5/8"	3/8"	3/32"	15/64"	1/32"	1/4"	10	000000000	0000
				1/4"-20	2	13/16"	1/2"	1/8"	19/64"	1/16"	5/16"	10	000000000	00000
				1/4"-28	2	13/16"	1/2"	1/8"	19/64"	1/16"	19/64"	10	000000000	00000
				5/16"-18	2	63/64"	5/8"	9/64"	23/64"	3/32"	3/8"	5	000000000	0000
				5/16"-24	2	63/64"	5/8"	9/64"	23/64"	5/8"	23/64"	5	000000000	0000
				3/8"-16	2	63/64"	5/8"	9/64"	7/16"	3/32"	29/64"	5	000000000	0000
				3/8"-24	2	63/64"	5/8"	9/64"	7/16"	3/32"	7/16"	5	000000000	0000
				1/2"-13	2	1 1/8"	3/4"	5/32"	37/64"	3/32"	37/64"	5	000000000	00000
				M4 × 0.7 mm	2	16 mm	9.6 mm	2.4 mm	5.2 mm	0.8 mm	5.2 mm	10	000000000	0000


				M5 × 0.8 mm	2	16 mm	9.6 mm	2.4 mm	6 mm	0.8 mm	6 mm	10	000000000	0000
				M6 × 1 mm	2	20.5 mm	13 mm	3.2 mm	7.6 mm	1.2 mm	7.6 mm	10	000000000	00000
				M8 × 1.25 mm	2	25 mm	16 mm	3.6 mm	9.2 mm	2 mm	9.2 mm	5	000000000	0000

Weld Locknuts

Prevent screws from backing out under heavy vibration. These nuts have distorted threads that grip screws tightly. Three evenly spaced projections concentrate heat away from the threads to prevent them from deforming and create consistent welds. These nuts also have a collar pilot that guides the nut into the hole, holds it in place while welding, and protects the threads from weld spatter.

Use Grade 2 or Class 6 screws to avoid stripping threads during installation. Distorted threads require high torque for fastening and unfastening, so you may need an impact wrench to remove screws.

Steel—Best for dry environments since moisture will cause them to rust. Made of uncoated steel, these nuts require minimal prep. Weld them to uncoated steel surfaces.

				Collar
	Thread Size	Wd.	Ht.	Dia.	Ht.	For Hole Dia.	Pkg. Qty.		Pkg.
Steel



		10-24	1/2"	3/16"	13/32"	0.04"	27/64"	10	000000000	00000


		10-32	1/2"	3/16"	13/32"	0.04"	27/64"	10	000000000	0000
		1/4"-20	15/32"	11/64"	13/32"	0.04"	27/64"	100	000000000	00000
		1/4"-20	1/2"	3/16"	13/32"	0.085"	27/64"	25	000000000	0000
		5/16"-18	35/64"	13/64"	15/32"	0.04"	31/64"	100	000000000	00000
		5/16"-18	9/16"	7/32"	15/32"	0.085"	31/64"	10	000000000	0000
		3/8"-16	39/64"	15/64"	17/32"	0.05"	35/64"	50	000000000	00000
		3/8"-16	5/8"	1/4"	17/32"	0.085"	35/64"	10	000000000	0000
		1/2"-13	25/32"	23/64"	23/32"	0.06"	47/64"	50	000000000	00000
		1/2"-13	25/32"	23/64"	23/32"	0.085"	47/64"	50	000000000	00000
		5/8"-11	59/64"	27/64"	25/32"	0.085"	51/64"	25	000000000	00000


		5/8"-11	15/16"	7/16"	25/32"	0.085"	51/64"	5	000000000	0000
		M5 × 0.8 mm	11 mm	5.5 mm	7.6 mm	0.9 mm	7.6 mm	10	000000000	0000
		M6 × 1 mm	12.7 mm	5.1 mm	8.8 mm	1 mm	8.8 mm	100	000000000	00000
		M6 × 1 mm	13 mm	5.5 mm	9.1 mm	1.6 mm	9.1 mm	25	000000000	0000
		M8 × 1.25 mm	14.7 mm	6.6 mm	10.9 mm	1 mm	10.9 mm	50	000000000	00000
		M8 × 1.25 mm	15 mm	7 mm	11.1 mm	1.8 mm	11.1 mm	10	000000000	0000
		M10 × 1.5 mm	17.7 mm	7.7 mm	13.4 mm	1.16 mm	13.4 mm	50	000000000	00000
		M10 × 1.5 mm	18 mm	8 mm	13.6 mm	1.8 mm	13.6 mm	10	000000000	0000
		M12 × 1.75 mm	20.6 mm	9.4 mm	15.9 mm	1.26 mm	15.9 mm	50	000000000	00000
		M12 × 1.75 mm	21 mm	9.7 mm	16.1 mm	1.8 mm	16.1 mm	10	000000000	0000


		M16 × 2 mm	26 mm	13 mm	20.6 mm	1.3 mm	20.6 mm	5	000000000	0000

Round Weld Nuts

With three projections and a short collar, weld these nuts under low-clearance areas without sacrificing strength. The projections concentrate heat away from the threads to prevent them from deforming and create consistent welds. To make welding easier, their collar pilot guides them into the hole and aligns them with the surface while also shielding the threads from weld spatter.

Steel—Best for dry environments since moisture will cause them to rust. Made of uncoated steel, these nuts require minimal prep. Weld them to uncoated steel surfaces.

18-8 Stainless Steel—Suitable for outdoor use, these nuts resist rust from water and mild chemicals. Weld them to stainless steel surfaces.

		Base		Collar
	Thread Size	Dia.	Thk.	Dia.	Ht.	Pkg. Qty.		Pkg.
Steel



		4-40	5/16"	1/16"	11/64"	0.03"	25	000000000	00000


		6-32	11/32"	3/32"	3/16"	0.03"	25	000000000	00000
		8-32	3/8"	7/64"	7/32"	0.03"	50	000000000	00000
		10-24	7/16"	5/32"	1/4"	0.03"	10	000000000	0000
		10-32	7/16"	5/32"	1/4"	0.03"	25	000000000	0000
		1/4"-20	1/2"	3/16"	5/16"	0.047"	25	000000000	0000
		5/16"-18	19/32"	1/4"	25/64"	0.047"	10	000000000	0000
		M3 × 0.5 mm	8 mm	1.5 mm	4.3 mm	0.8 mm	25	000000000	0000
		M4 × 0.7 mm	9.6 mm	2.6 mm	5.5 mm	0.8 mm	50	000000000	0000
		M5 × 0.8 mm	11.1 mm	3.8 mm	6.3 mm	0.8 mm	25	000000000	0000
		M6 × 1 mm	13.2 mm	4.6 mm	8 mm	1.2 mm	50	000000000	00000


		18-8 Stainless Steel



				4-40	5/16"	1/16"	11/64"	0.03"	25	000000000	0000


				6-32	11/32"	3/32"	3/16"	0.03"	25	000000000	0000
				8-32	3/8"	7/64"	7/32"	0.03"	25	000000000	0000
				10-24	7/16"	5/32"	1/4"	0.03"	10	000000000	0000
				10-32	7/16"	5/32"	1/4"	0.03"	10	000000000	0000
				1/4"-20	33/64"	3/16"	5/16"	0.047"	10	000000000	0000
				M3 × 0.5 mm	7.8 mm	1.5 mm	4.3 mm	0.8 mm	25	000000000	0000
				M4 × 0.7 mm	9.4 mm	2.6 mm	5.5 mm	0.8 mm	25	000000000	0000
				M5 × 0.8 mm	11.2 mm	3.8 mm	6.3 mm	0.8 mm	10	000000000	0000
				M6 × 1 mm	13.2 mm	4.6 mm	8 mm	1.2 mm	10	000000000	0000

Long-Barrel Round Weld Nuts

With an extended barrel and a round flange, these nuts distribute force evenly to prevent pull-through. The barrel is twice as long as standard round weld nuts, so more threads connect with your bolt for a great grip. You can weld these nuts in two orientations: on top of a flat surface or with the barrel sticking through the hole.

Steel—Best for dry environments since moisture will cause them to rust. Made of uncoated steel, these nuts require minimal prep. Weld them to uncoated steel surfaces.

Number of Projections—Weld these nuts on top of metal—the projections on the bottom will fuse to the surface. More projections lead to more consistent welds by concentrating heat and protecting the threads from deforming.

			Base		Barrel
	Thread Size	No. of Projections	Dia.	Thk.	Dia.	Ht.	Pkg. Qty.		Pkg.
Steel



		8-32	3	23/32"	1/32"	7/32"	1/4"	50	000000000	000000


		10-24	3	3/4"	3/64"	1/4"	9/32"	50	000000000	00000
		10-32	3	3/4"	3/64"	1/4"	9/32"	50	000000000	00000
		1/4"-20	3	3/4"	3/64"	5/16"	5/16"	50	000000000	00000
		1/4"-20	3	3/4"	3/64"	5/16"	7/16"	25	000000000	00000
		1/4"-20	3	3/4"	3/64"	5/16"	9/16"	50	000000000	00000
		1/4"-20	3	3/4"	3/64"	5/16"	7/8"	25	000000000	00000
		5/16"-18	3	7/8"	1/16"	3/8"	3/8"	25	000000000	00000
		5/16"-18	3	7/8"	1/16"	3/8"	5/8"	25	000000000	00000
		5/16"-18	3	7/8"	1/16"	3/8"	7/8"	25	000000000	00000
		3/8"-16	3	1"	1/16"	29/64"	7/16"	25	000000000	00000


		1/2"-13	3	1 1/4"	3/32"	19/32"	3/8"	10	000000000	00000

Offset-Barrel Low-Profile Rectangular Weld Nuts

Add permanent threads on corners and near edges. With a slim base and a short, offset barrel, these weld nuts fit in tight spaces such as channels and low-clearance areas.

Steel—Best for dry environments since moisture will cause them to rust. Made of uncoated steel, these nuts require minimal prep. Weld them to uncoated steel surfaces.

18-8 Stainless Steel—Suitable for outdoor use, these nuts resist rust from water and mild chemicals. Weld them to stainless steel surfaces.

Number of Projections—More projections lead to more consistent welds by concentrating heat and protecting the threads from deforming.

			Base			Barrel
	Thread Size	No. of Projections	Lg.	Wd.	Thk.	Dia.	Ht.	For Hole Dia.	Pkg. Qty.		Pkg.
Steel



		6-32	1	5/8"	7/16"	3/32"	3/16"	1/32"	13/64"	25	000000000	00000


		8-32	1	5/8"	7/16"	3/32"	13/64"	1/32"	7/32"	25	000000000	0000
		10-24	1	5/8"	7/16"	3/32"	15/64"	1/32"	1/4"	25	000000000	0000
		10-32	1	5/8"	7/16"	3/32"	15/64"	1/32"	1/4"	25	000000000	0000
		1/4"-20	1	13/16"	1/2"	1/8"	19/64"	3/64"	5/16"	25	000000000	0000
		5/16"-18	1	63/64"	5/8"	9/64"	23/64"	5/64"	3/8"	25	000000000	0000
		3/8"-16	1	1 1/8"	5/8"	9/64"	7/16"	3/32"	29/64"	10	000000000	0000
		M4 × 0.7 mm	1	16 mm	11 mm	2.4 mm	5.2 mm	0.08 mm	5.6 mm	25	000000000	00000
		M5 × 0.8 mm	1	16 mm	11 mm	2.4 mm	6 mm	0.08 mm	6.4 mm	25	000000000	00000
		M6 × 1 mm	1	20.5 mm	13 mm	3.2 mm	7.6 mm	1.2 mm	8 mm	25	000000000	00000
		M8 × 1.25 mm	1	25 mm	16 mm	3.6 mm	9.2 mm	2 mm	9.6 mm	25	000000000	00000


		M10 × 1.5 mm	1	28.6 mm	16 mm	3.6 mm	11.8 mm	2.4 mm	12.2 mm	10	000000000	0000


		18-8 Stainless Steel



				8-32	1	5/8"	3/8"	3/32"	13/64"	1/32"	7/32"	10	000000000	0000


				10-24	1	5/8"	3/8"	3/32"	15/64"	1/32"	1/4"	10	000000000	0000
				10-32	1	5/8"	3/8"	3/32"	15/64"	1/32"	1/4"	10	000000000	0000
				1/4"-20	1	13/16"	1/2"	1/8"	19/64"	3/64"	5/16"	5	000000000	0000
				5/16"-18	1	1 1/8"	5/8"	9/64"	23/64"	5/64"	3/8"	5	000000000	00000
				3/8"-16	1	1 1/8"	5/8"	9/64"	7/16"	3/32"	29/64"	5	000000000	00000
				M4 × 0.7 mm	1	15.9 mm	9.6 mm	2.4 mm	5.2 mm	0.8 mm	5.6 mm	5	000000000	0000
				M5 × 0.8 mm	1	15.9 mm	9.6 mm	2.4 mm	6 mm	0.8 mm	6.4 mm	5	000000000	0000
				M6 × 1 mm	1	20.6 mm	12.9 mm	3.2 mm	7.6 mm	1.3 mm	8 mm	5	000000000	0000
				M8 × 1.25 mm	1	28.6 mm	16.1 mm	3.6 mm	9.2 mm	2 mm	9.6 mm	5	000000000	00000

Rectangular Weld Nuts

These nuts add permanent threads in narrow spaces such as channels. With a slim footprint, they fit where round weld nuts can’t. Plus, their barrel is twice as long as low-profile barrels, so more threads connect with your bolt for a secure hold. You can weld these nuts in two orientations: on top of a flat surface or with the barrel sticking through a hole.

Steel—Best for dry environments since moisture will cause them to rust. Made of uncoated steel, these nuts require minimal prep. Weld them to uncoated steel surfaces.

Zinc-Plated Steel—A step up from plain steel, these nuts withstand occasional exposure to moisture. Weld them to uncoated steel surfaces. If MIG or TIG welding, grind the zinc plating off the part of the nut you intend to weld.

18-8 Stainless Steel—Suitable for outdoor use, these nuts resist rust from water and mild chemicals. Weld them to stainless steel surfaces.

			Base			Barrel
	Thread Size	No. of Projections	Lg.	Wd.	Thk.	Dia.	Ht.	For Hole Dia.	Pkg. Qty.		Pkg.
Steel



		6-32	4	1/2"	5/16"	5/64"	7/32"	5/16"	7/32"	5	000000000	00000


		8-32	4	1/2"	5/16"	5/64"	1/4"	5/16"	1/4"	5	000000000	0000
		10-24	4	5/8"	3/8"	3/32"	9/32"	3/8"	9/32"	5	000000000	0000
		10-32	4	5/8"	3/8"	3/32"	9/32"	3/8"	9/32"	5	000000000	0000
		1/4"-20	2	3/4"	1/2"	3/64"	5/16"	1/4"	5/16"	25	000000000	0000
		1/4"-20	2	3/4"	1/2"	3/64"	5/16"	5/16"	5/16"	25	000000000	00000
		3/8"-16	2	1"	5/8"	1/16"	29/64"	7/16"	29/64"	25	000000000	00000


		Zinc-Plated Steel



				1/4"-20	2	3/4"	1/2"	3/64"	5/16"	1/4"	5/16"	10	000000000	00000


				18-8 Stainless Steel



						6-32	4	1/2"	5/16"	5/64"	7/32"	5/16"	—	1	000000000	0000


						8-32	4	1/2"	5/16"	5/64"	1/4"	5/16"	—	5	000000000	00000
						10-24	4	5/8"	3/8"	3/32"	9/32"	3/8"	—	5	000000000	00000
						10-32	4	5/8"	3/8"	3/32"	9/32"	3/8"	—	5	000000000	00000
						1/4"-20	4	13/16"	1/2"	7/64"	3/8"	1/2"	—	1	000000000	0000

Corner Weld Nuts

Create permanent, threaded 90° joints in sheet metal. Shaped like corner brackets, they’re often used to add mounting brackets in assemblies such as motors and heaters. These nuts have two projections that concentrate heat away from the threads to prevent them from deforming and create consistent welds.

Steel—Best for dry environments since moisture will cause them to rust. Made of uncoated steel, these nuts require minimal prep. Weld them to uncoated steel surfaces.

18-8 Stainless Steel—Suitable for outdoor use, these nuts resist rust from water and mild chemicals. Weld them to stainless steel surfaces.

		Base				Barrel
	Thread Size	Lg. (A)	Lg. (B)	Wd.	Thk.	Dia.	Ht.	For Hole Dia.	Pkg. Qty.		Pkg.
Steel



		8-32	1/2"	5/8"	1/2"	1/8"	—	—	11/64"	10	000000000	00000


		8-32	19/32"	21/32"	1/2"	1/8"	—	—	11/64"	10	000000000	00000
		10-24	19/32"	21/32"	1/2"	1/8"	—	—	13/64"	10	000000000	00000
		10-32	19/32"	21/32"	1/2"	1/8"	—	—	13/64"	10	000000000	00000
		1/4"-20	3/4"	3/4"	1/2"	1/8"	5/16"	3/64"	5/16"	10	000000000	00000
		5/16"-18	1"	1"	5/8"	5/32"	23/64"	5/64"	23/64"	10	000000000	00000
		M5 × 0.8 mm	15.1 mm	16.6 mm	13 mm	3.2 mm	—	—	6 mm	10	000000000	00000
		M6 × 1 mm	19.1 mm	19.1 mm	13 mm	3.2 mm	7.6 mm	1.2 mm	7.6 mm	10	000000000	00000
		M8 × 1.25 mm	25.4 mm	25.4 mm	16.1 mm	3.6 mm	9.2 mm	2 mm	9.2 mm	10	000000000	00000


		18-8 Stainless Steel



				10-24	19/32"	21/32"	1/2"	1/8"	—	—	13/64"	5	000000000	0000


				10-32	19/32"	21/32"	1/2"	1/8"	—	—	13/64"	5	000000000	00000
				5/16"-18	1"	1"	5/8"	5/32"	23/64"	5/64"	23/64"	5	000000000	00000