Bridge Weld Nuts | McMaster-Carr

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Retainer Material

1008-1010 Low-Carbon Steel

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Base Length

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Unified Standard Class 2B

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

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REACH

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26 Products

Self-Aligning Rectangular Weld Nuts

Help screws pass through perfectly every time. These nuts float inside a rectangular retainer that shifts and tilts to compensate for misalignment. A pilot tip locates the hole, and the retainer holds the nut in place during welding.

Steel with Steel Retainer—Best for dry environments since moisture will create rust. Weld them to steel surfaces.

Zinc-Plated Steel with Steel Retainer—A step up from a plain steel nut, the zinc plating on these nuts withstands occasional exposure to moisture. Weld them to uncoated steel surfaces.

Zinc-Plated Steel with Aluminum Retainer—Both the nut and retainer can withstand occasional exposure to moisture. Weld them to aluminum surfaces.

18-8 Stainless Steel with Stainless Steel Retainer—Suitable for outdoor use, both the nut and its retainer resist rust from water and mild chemicals. Weld them to stainless steel surfaces.

		Base
	Thread Size	Lg.	Wd.	Thk.	Ht.	Certificate Type	Pkg. Qty.		Pkg.
Steel with Steel Retainer



		6-32	1 1/2"	1/2"	3/64"	29/64"	—	1	90955A136	00000


		8-32	1 1/2"	1/2"	3/64"	11/32"	—	10	90955A105	00000
		10-24	1 1/2"	1/2"	3/64"	11/32"	—	10	90955A107	00000
		10-32	1 1/2"	1/2"	3/64"	11/32"	—	10	90955A109	00000
		1/4"-20	1 3/4"	9/16"	1/16"	7/16"	—	10	90955A112	00000
		1/4"-28	1 3/4"	9/16"	1/16"	7/16"	—	10	90955A113	00000
		5/16"-18	2"	25/32"	1/16"	33/64"	—	10	90955A115	00000
		5/16"-24	2"	25/32"	1/16"	33/64"	—	10	90955A116	00000
		3/8"-16	2"	25/32"	1/16"	33/64"	—	10	90955A123	00000
		3/8"-24	2"	25/32"	1/16"	33/64"	—	5	90955A120	00000
		7/16"-14	2 1/4"	15/16"	1/16"	51/64"	—	5	90955A134	00000


		1/2"-13	2 1/4"	15/16"	1/16"	51/64"	—	5	90955A121	00000
		M5 × 0.8 mm	38.1 mm	12.7 mm	1.06 mm	8.6 mm	—	5	90955A311	00000
		M6 × 1 mm	38.1 mm	12.7 mm	1.06 mm	8.6 mm	—	10	90955A101	00000
		M8 × 1.25 mm	50.8 mm	19.8 mm	1.27 mm	13.7 mm	—	5	90955A103	00000
		M10 × 1.5 mm	50.8 mm	19.8 mm	1.27 mm	13 mm	—	5	90955A312	00000
		M12 × 1.75 mm	58.7 mm	23.8 mm	1.27 mm	20.2 mm	—	5	90955A313	00000


		Zinc-Plated Steel with Steel Retainer



				10-24	1 1/2"	1/2"	3/64"	11/32"	—	5	90955A131	0000


				1/4"-20	1 3/4"	9/16"	1/16"	7/16"	—	5	90955A132	00000
				5/16"-18	2"	25/32"	1/16"	33/64"	—	5	90955A133	00000


				Zinc-Plated Steel with Aluminum Retainer



						10-32	1 1/2"	1/2"	3/64"	11/32"	—	10	90955A130	00000


						1/4"-20	1 3/4"	9/16"	1/16"	7/16"	—	10	90955A126	00000
						5/16"-18	2"	25/32"	1/16"	33/64"	—	10	90955A128	00000
						3/8"-16	2"	25/32"	1/16"	33/64"	—	5	90955A129	00000
						M10 × 1.5 mm	50.8 mm	19.8 mm	1.27 mm	13 mm	—	5	90955A314	00000


						18-8 Stainless Steel with Stainless Steel Retainer



								1/4"-20	1 3/4"	9/16"	1/16"	11/32"	Material Certificate	1	90955A135	00000