Riv-Float Nuts | McMaster-Carr

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73 Products

Self-Aligning Twist-Resistant Rivet Nuts

Fasten parts with off-center holes. Also known as Riv-Float nuts, these have floating threads that shift so you can insert screws at a slight angle. Their ribbed body digs into material so nuts won't spin out when tightening or loosening screws. Install them in a drilled hole with the required wrench-driven tool (sold separately).

To install, first thread the rivet nut onto the mandrel. Then grip the tool body with a wrench and twist the tightening nut with a ratchet.

Zinc-Plated Steel—A step up from plain steel, the plating withstands occasional exposure to moisture.

	Rivet Nuts											Wrench-Driven Tools
							Flange
	Thread Size	Drill Bit Size	For Material Thk.	Body Dia.	Lg.	Installed Lg.	Dia.	Thk.	Pkg. Qty.		Pkg.		Each
Zinc-Plated Steel



		8-32	25/64"	0.027" to 0.130"	0.39"	0.69"	0.522"	0.5"	0.03"	10	93669A210	00000	96349A180	000000


		8-32	7/16"	0.020" to 0.100"	0.43"	0.498"	0.315"	0.555"	0.033"	5	93669A110	0000	———	0
		10-24	7/16"	0.020" to 0.100"	0.43"	0.498"	0.315"	0.555"	0.033"	5	93669A120	0000	———	0
		10-32	25/64"	0.027" to 0.150"	0.39"	0.69"	0.522"	0.5"	0.03"	10	93669A220	0000	96349A280	00000
		10-32	7/16"	0.020" to 0.100"	0.43"	0.498"	0.315"	0.555"	0.033"	5	93669A130	0000	———	0
		1/4"-20	17/32"	0.027" to 0.150"	0.53"	0.784"	0.630"	0.685"	0.035"	10	93669A230	00000	96349A380	00000
		M4 x 0.7 mm	10 mm	0.7 mm to 3.3 mm	9.9 mm	17.5 mm	13.3 mm	12.7 mm	0.8 mm	10	93669A260	0000	96349A180	00000
		M4 x 0.7 mm	11 mm	0.5 mm to 2.5 mm	11 mm	12.6 mm	8 mm	14.1 mm	0.9 mm	5	93669A140	0000	———	0
		M5 x 0.8 mm	10 mm	0.7 mm to 3.8 mm	9.9 mm	17.5 mm	13.3 mm	12.7 mm	0.8 mm	10	93669A270	0000	96349A740	00000
		M5 x 0.8 mm	11 mm	0.5 mm to 2.5 mm	11 mm	12.6 mm	8 mm	14.1 mm	0.9 mm	5	93669A150	0000	———	0
		M6 x 1 mm	13.5 mm	0.7 mm to 3.8 mm	13.5 mm	19.9 mm	16 mm	17.4 mm	0.9 mm	10	93669A280	00000	96349A780	00000

Mil. Spec. Rivet-Mount Nuts

Create threads in hard-to-work areas—where you can’t reach the back of a workpiece, or material is too thin to be tapped. For a strong grip, these rivet-mount nuts have distorted threads that increase friction with bolts. Because they mount with two rivets, they won’t spin when you’re tightening screws. However, these nuts do move inside their retainers, which lets you install bolts at a slight angle; use them to align with off-center parts. All meet military guidelines for dimensions and material.

A286 Stainless Steel—A286 stainless steel nuts are corrosion resistant.

Cadmium-Plated Carbon Steel and Cadmium-Plated Steel—Cadmium-plated nuts resist corrosion in industrial and saltwater environments, although will lose their corrosion resistance over 450° F. The cadmium plating also adds lubricity, making these nuts easy to install.

Silver-Plated A286 Stainless Steel—Silver-plated stainless steel nuts withstand temperatures up to 800° F. The silver plating also adds lubricity and prevents seizing caused by friction between nuts and bolts.

Lubricated—Lubricated nuts thread onto bolts smoothly.

		Base			Barrel		Mounting
	Thread Size	Lg.	Wd.	Thk.	Dia.	Ht.	No. of Holes	Hole Dia.	Hole Ctr.-to-Ctr.	Mil. Spec.		Each
Steel—Unlubricated



		4-40	21/32"	5/16"	3/32"	1/8"	1/16"	2	0.098"	13/32"	MS21075-04N	90857A126	00000


		6-32	11/16"	11/32"	3/32"	0.172"	5/64"	2	0.098"	7/16"	MS21075-06N	90857A127	0000
		8-32	45/64"	23/64"	3/32"	0.203"	5/32"	2	0.098"	15/32"	MS21075-08N	90857A128	0000
		10-32	47/64"	13/32"	3/32"	0.234"	5/32"	2	0.098"	1/2"	MS21075-3N	90857A129	0000
		1/4"-28	51/64"	1/2"	3/32"	0.313"	3/16"	2	0.098"	9/16"	MS21075-4N	90857A130	0000


		Cadmium-Plated Steel—Lubricated



				4-40	21/32"	5/16"	3/32"	1/8"	1/16"	2	0.098"	13/32"	MS21075L04N	90857A131	0000


				6-32	11/16"	11/32"	3/32"	0.172"	5/64"	2	0.098"	7/16"	MS21075L06N	90857A132	0000
				8-32	45/64"	23/64"	3/32"	0.203"	5/32"	2	0.098"	15/32"	MS21075L08N	90857A133	0000
				10-32	47/64"	13/32"	3/32"	0.234"	5/32"	2	0.098"	1/2"	MS21075L3N	90857A134	0000
				1/4"-28	51/64"	1/2"	3/32"	0.313"	3/16"	2	0.098"	9/16"	MS21075L4N	90857A135	0000


				Carbon Steel—Unlubricated



						6-32	61/64"	13/32"	1/32"	0.172"	11/64"	2	0.098"	11/16"	MS21059-06	90857A101	0000


						8-32	61/64"	13/32"	1/32"	0.203"	7/32"	2	0.098"	11/16"	MS21059-08	90857A102	0000
						10-32	61/64"	13/32"	1/32"	0.234"	7/32"	2	0.098"	11/16"	MS21059-3	90857A103	0000
						1/4"-28	1 19/64"	33/64"	1/32"	0.313"	1/4"	2	0.098"	1"	MS21059-4	90857A104	0000


						Cadmium-Plated Carbon Steel—Lubricated



								4-40	61/64"	13/32"	1/32"	0.141"	9/64"	2	0.098"	11/16"	MS21059L04	90857A106	0000


								6-32	61/64"	13/32"	1/32"	0.172"	11/64"	2	0.098"	11/16"	MS21059L06	90857A107	0000
								8-32	61/64"	13/32"	1/32"	0.203"	7/32"	2	0.098"	11/16"	MS21059L08	90857A108	0000
								10-32	61/64"	13/32"	1/32"	0.234"	7/32"	2	0.098"	11/16"	MS21059L3	90857A109	0000
								1/4"-28	1 19/64"	33/64"	1/32"	0.313"	1/4"	2	0.098"	1"	MS21059L4	90857A110	0000
								5/16"-24	1 19/64"	39/64"	3/64"	3/8"	9/32"	2	0.13"	1"	MS21059L5	90857A111	0000
								3/8"-24	1 19/64"	43/64"	1/16"	0.453"	19/64"	2	0.13"	1"	MS21059L6	90857A112	00000


								A286 Stainless Steel—Lubricated



										4-40	21/32"	5/16"	3/32"	1/8"	1/16"	2	0.098"	13/32"	MS21076L04N	90857A141	00000


										6-32	11/16"	11/32"	3/32"	0.172"	5/64"	2	0.098"	7/16"	MS21076L06N	90857A142	00000
										6-32	61/64"	13/32"	1/32"	0.172"	11/64"	2	0.098"	11/16"	MS21060L06	90857A120	00000
										8-32	45/64"	23/64"	3/32"	0.203"	5/32"	2	0.098"	15/32"	MS21076L08N	90857A143	0000
										8-32	61/64"	13/32"	1/32"	0.203"	7/32"	2	0.098"	11/16"	MS21060L08	90857A121	0000
										10-32	47/64"	13/32"	3/32"	0.234"	5/32"	2	0.098"	1/2"	MS21076L3N	90857A144	0000
10-32										61/64"	13/32"	1/32"	0.234"	7/32"	2	0.098"	11/16"	MS21060L3	90857A122	0000
1/4"-28	51/64"									1/2"	3/32"	0.313"	3/16"	2	0.098"	9/16"	MS21076L4N	90857A145	0000
1/4"-28	1 19/64"									33/64"	1/32"	0.313"	1/4"	2	0.098"	1"	MS21060L4	90857A123	00000
5/16"-24	1 1/64"									37/64"	7/64"	0.391"	7/32"	2	0.13"	23/32"	MS21076L5N	90857A146	00000
5/16"-24	1 19/64"									39/64"	3/64"	3/8"	9/32"	2	0.13"	1"	MS21060L5	90857A124	00000


3/8"-24	1 19/64"									43/64"	1/16"	0.453"	19/64"	2	0.13"	1"	MS21060L6	90857A125	00000


Silver-Plated A286 Stainless Steel—Unlubricated



		4-40								21/32"	5/16"	3/32"	1/8"	1/16"	2	0.098"	13/32"	MS21076-04N	90857A136	00000


		6-32	61/64"							13/32"	1/32"	0.172"	11/64"	2	0.098"	11/16"	MS21060-06	90857A114	00000
		8-32	45/64"							23/64"	3/32"	0.203"	5/32"	2	0.098"	15/32"	MS21076-08N	90857A137	00000
		10-32	47/64"							13/32"	3/32"	0.234"	5/32"	2	0.098"	1/2"	MS21076-3N	90857A138	0000
		10-32	61/64"							13/32"	1/32"	0.234"	7/32"	2	0.098"	11/16"	MS21060-3	90857A116	0000
		1/4"-28	51/64"							1/2"	3/32"	0.313"	3/16"	2	0.098"	9/16"	MS21076-4N	90857A139	00000
		1/4"-28	1 19/64"							33/64"	1/32"	0.313"	1/4"	2	0.098"	1"	MS21060-4	90857A117	00000
		5/16"-24	1 1/64"							37/64"	7/64"	0.391"	7/32"	2	0.13"	23/32"	MS21076-5N	90857A140	00000

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 Aluminum Retainer—Both the nut and retainer can withstand occasional exposure to moisture. Weld them to aluminum surfaces.

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



		8-32	1 1/2"	1/2"	3/64"	11/32"	10	90955A105	000000


		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
		1/2"-13	2 1/4"	15/16"	1/16"	51/64"	5	90955A121	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


		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