Flat Tabs | McMaster-Carr

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System of Measurement

Thread Size

Material

Base Width

Nut Type

Base Length

Base Thickness

Barrel Height

Barrel Diameter

Thread Type

Number of Projections

Thread Pitch

Thread Spacing

Thread Fit

Unified Standard Class 2B

Export Control Classification Number (ECCN)

EAR99

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

Yes

DFARS Specialty Metals

RoHS

REACH

Performance

140 Products

Nut Type

Flange

Distribute pressure evenly across the welding surface

123 products

Performance

Corrosion Resistant

Won’t rust when exposed to moisture and chemicals

49 products

Performance

Easy Weld

Projections on the nut focus heat and current

53 products

Mounting Hole Location

Offset

Weld near edges and on corners with an off-center barrel

67 products

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.	Certificate Type	Pkg. Qty.		Pkg.
Steel



		6-32	0	7/8"	7/16"	3/32"	3/16"	1/32"	13/64"	—	25	98001A110	00000


		6-32	2	5/8"	3/8"	3/32"	3/16"	1/32"	3/16"	—	25	92006A210	0000
		8-32	0	7/8"	7/16"	3/32"	13/64"	1/32"	7/32"	—	25	98001A115	0000
		8-32	2	5/8"	3/8"	3/32"	13/64"	1/32"	13/64"	—	25	92006A220	0000
		10-24	0	7/8"	7/16"	3/32"	15/64"	1/32"	1/4"	—	25	98001A120	0000
		10-24	2	5/8"	3/8"	3/32"	15/64"	1/32"	15/64"	—	25	92006A140	0000
		10-32	0	7/8"	7/16"	3/32"	15/64"	1/32"	1/4"	Material Certificate	25	98001A125	0000
		10-32	2	5/8"	3/8"	3/32"	15/64"	1/32"	15/64"	—	25	92006A150	0000
		1/4"-20	0	1"	7/16"	3/32"	9/32"	1/32"	19/64"	Material Certificate	25	98001A130	0000
		1/4"-20	0	1 1/8"	1/2"	1/8"	19/64"	3/64"	5/16"	Material Certificate	25	98001A135	00000
		1/4"-20	2	13/16"	1/2"	1/8"	19/64"	1/16"	19/64"	—	25	92006A120	0000


		1/4"-28	2	13/16"	1/2"	1/8"	19/64"	1/16"	19/64"	—	10	92006A130	0000
		5/16"-18	0	1 1/2"	5/8"	9/64"	23/64"	5/64"	3/8"	—	10	98001A140	0000
		5/16"-18	2	63/64"	5/8"	9/64"	23/64"	3/32"	23/64"	—	25	92006A180	00000
		5/16"-24	2	63/64"	5/8"	9/64"	23/64"	3/32"	23/64"	—	10	92006A190	0000
		3/8"-16	0	1 1/2"	5/8"	9/64"	7/16"	3/32"	29/64"	—	10	98001A145	0000
		3/8"-16	2	63/64"	5/8"	9/64"	7/16"	3/32"	7/16"	—	25	92006A160	0000
		3/8"-24	2	63/64"	5/8"	9/64"	7/16"	3/32"	7/16"	—	10	92006A170	0000
		1/2"-13	0	1 1/2"	3/4"	3/16"	37/64"	3/32"	39/64"	—	10	98001A156	00000
		1/2"-13	2	1 1/8"	3/4"	3/16"	37/64"	3/32"	19/32"	—	10	92006A110	00000
		M3.5 × 0.6 mm	0	22 mm	11 mm	2.4 mm	4.8 mm	0.8 mm	5.2 mm	—	10	98001A103	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	92006A240	0000
		M4 × 0.7 mm	0	22 mm	11 mm	2.4 mm	5.2 mm	0.8 mm	5.6 mm	—	10	98001A157	00000
		M4 × 0.7 mm	2	16 mm	9.6 mm	2.4 mm	5.2 mm	0.8 mm	5.2 mm	—	25	92006A250	0000
		M5 × 0.8 mm	0	22 mm	11 mm	2.4 mm	6 mm	0.8 mm	6.4 mm	—	10	98001A101	00000
		M5 × 0.8 mm	2	16 mm	9.6 mm	2.4 mm	6 mm	0.8 mm	6 mm	—	25	92006A260	0000
		M6 × 1 mm	0	28.5 mm	13 mm	3.2 mm	7.6 mm	1.2 mm	8 mm	—	10	98001A158	00000
		M6 × 1 mm	2	20.5 mm	13 mm	3.2 mm	7.6 mm	1.2 mm	7.6 mm	—	10	92006A270	0000
		M8 × 1.25 mm	0	38 mm	16 mm	3.6 mm	9.2 mm	2 mm	9.6 mm	—	10	98001A159	00000
		M8 × 1.25 mm	2	25 mm	16 mm	3.6 mm	9.2 mm	2 mm	9.2 mm	—	25	92006A280	00000
		M10 × 1.5 mm	0	38 mm	16 mm	3.6 mm	11.8 mm	2.4 mm	12.2 mm	—	10	98001A160	00000


		M12 × 1.75 mm	0	38 mm	19.4 mm	4.8 mm	14.1 mm	2.4 mm	14.7 mm	—	5	98001A102	00000
		M12 × 1.75 mm	2	28.5 mm	19 mm	4.8 mm	14 mm	2.4 mm	14 mm	—	10	92006A230	00000


		18-8 Stainless Steel



				8-32	0	7/8"	7/16"	3/32"	13/64"	1/32"	7/32"	—	10	92442A160	00000


				8-32	2	5/8"	3/8"	3/32"	13/64"	1/32"	7/32"	—	10	98697A510	0000
				10-24	0	7/8"	7/16"	3/32"	15/64"	1/32"	1/4"	—	10	92442A180	00000
				10-24	2	5/8"	3/8"	3/32"	15/64"	1/32"	1/4"	—	10	98697A520	0000
				10-32	0	7/8"	7/16"	3/32"	15/64"	1/32"	1/4"	—	10	92442A190	00000
				10-32	2	5/8"	3/8"	3/32"	15/64"	1/32"	1/4"	—	10	98697A530	0000
				1/4"-20	0	1"	7/16"	3/32"	19/64"	1/32"	5/16"	—	5	92442A120	0000
				1/4"-20	0	1 1/8"	1/2"	1/8"	19/64"	3/64"	5/16"	Material Certificate	5	92442A150	0000
				1/4"-20	2	13/16"	1/2"	1/8"	19/64"	1/16"	5/16"	—	10	98697A540	00000
				1/4"-28	2	13/16"	1/2"	1/8"	19/64"	1/16"	19/64"	Material Certificate	10	98697A770	00000
				5/16"-18	0	1 1/2"	5/8"	9/64"	23/64"	5/64"	3/8"	—	5	92442A140	00000


5/16"-18	2			63/64"	5/8"	9/64"	23/64"	3/32"	3/8"	—	5	98697A550	0000
5/16"-24	2			63/64"	5/8"	9/64"	23/64"	5/8"	23/64"	—	5	98697A780	0000
3/8"-16	0			1 1/2"	5/8"	9/64"	7/16"	3/32"	29/64"	—	5	92442A130	00000
3/8"-16	2			63/64"	5/8"	9/64"	7/16"	3/32"	29/64"	—	5	98697A560	0000
3/8"-24	2			63/64"	5/8"	9/64"	7/16"	3/32"	7/16"	—	5	98697A790	0000
1/2"-13	0			1 1/2"	51/64"	5/32"	19/32"	3/32"	39/64"	—	1	92442A220	0000
1/2"-13	2			1 1/8"	3/4"	5/32"	37/64"	3/32"	37/64"	—	5	98697A800	00000
M4 × 0.7 mm	2			16 mm	9.6 mm	2.4 mm	5.2 mm	0.8 mm	5.2 mm	—	10	98697A810	0000
M5 × 0.8 mm	0			22.4 mm	11.3 mm	2.5 mm	6.2 mm	0.8 mm	6.6 mm	—	10	92442A230	0000
M5 × 0.8 mm	2			16 mm	9.6 mm	2.4 mm	6 mm	0.8 mm	6 mm	—	10	98697A820	0000


M6 × 1 mm	0			28.5 mm	13 mm	3.2 mm	7.6 mm	1.2 mm	8 mm	—	5	92442A210	00000
M6 × 1 mm	2			20.5 mm	13 mm	3.2 mm	7.6 mm	1.2 mm	7.6 mm	Material Certificate	10	98697A830	00000
M8 × 1.25 mm	0			38 mm	16 mm	3.6 mm	9.2 mm	2 mm	9.6 mm	—	5	92442A170	00000
M8 × 1.25 mm	2			25 mm	16 mm	3.6 mm	9.2 mm	2 mm	9.2 mm	—	5	98697A840	0000
M10 × 1.5 mm	0			38 mm	16 mm	3.6 mm	11.8 mm	2.4 mm	12.2 mm	—	5	92442A110	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.

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.

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.	Certificate Type	Pkg. Qty.		Pkg.
Steel



		6-32	0	5/8"	7/16"	3/32"	3/16"	1/32"	13/64"	—	50	94579A100	000000


		6-32	1	5/8"	7/16"	3/32"	3/16"	1/32"	13/64"	—	25	93172A110	0000
		8-32	0	5/8"	7/16"	3/32"	13/64"	1/32"	7/32"	—	50	94579A200	00000
		8-32	1	5/8"	7/16"	3/32"	13/64"	1/32"	7/32"	—	25	93172A120	0000
		10-24	0	5/8"	7/16"	3/32"	15/64"	1/32"	1/4"	—	50	94579A250	00000
		10-24	1	5/8"	7/16"	3/32"	15/64"	1/32"	1/4"	—	25	93172A130	0000
		10-32	0	5/8"	7/16"	3/32"	15/64"	1/32"	1/4"	Material Certificate	50	94579A300	00000
		10-32	1	5/8"	7/16"	3/32"	15/64"	1/32"	1/4"	—	25	93172A140	0000
		1/4"-20	0	13/16"	1/2"	1/8"	19/64"	1/16"	5/16"	—	50	94579A400	00000
		1/4"-20	1	13/16"	1/2"	1/8"	19/64"	3/64"	5/16"	—	25	93172A150	0000
		1/4"-28	0	13/16"	1/2"	1/8"	19/64"	1/16"	5/16"	—	25	94579A450	0000


		5/16"-18	0	63/64"	5/8"	9/64"	23/64"	3/32"	3/8"	—	25	94579A500	00000
		5/16"-18	1	63/64"	5/8"	9/64"	23/64"	5/64"	3/8"	—	25	93172A160	0000
		5/16"-24	0	63/64"	5/8"	9/64"	23/64"	3/32"	3/8"	Material Certificate	25	94579A550	0000
		3/8"-16	0	1 1/8"	5/8"	9/64"	7/16"	3/32"	29/64"	—	25	94579A600	00000
		3/8"-16	1	1 1/8"	5/8"	9/64"	7/16"	3/32"	29/64"	—	10	93172A170	0000
		3/8"-24	0	1 1/8"	5/8"	9/64"	7/16"	3/32"	29/64"	—	25	94579A650	00000
		M3.5 × 0.6 mm	0	16 mm	11 mm	2.4 mm	4.8 mm	0.8 mm	4.9 mm	—	10	94579A660	0000
		M4 × 0.7 mm	0	16 mm	11 mm	2.4 mm	5.2 mm	0.8 mm	5.3 mm	—	10	94579A670	0000
		M4 × 0.7 mm	1	16 mm	11 mm	2.4 mm	5.2 mm	0.08 mm	5.6 mm	—	25	93172A180	00000
		M5 × 0.8 mm	0	16 mm	11 mm	2.4 mm	6 mm	0.8 mm	6.1 mm	—	10	94579A680	0000


		M5 × 0.8 mm	1	16 mm	11 mm	2.4 mm	6 mm	0.08 mm	6.4 mm	—	25	93172A190	00000
		M6 × 1 mm	0	20.5 mm	13 mm	3.2 mm	7.6 mm	1.2 mm	7.7 mm	—	10	94579A690	0000
		M6 × 1 mm	1	20.5 mm	13 mm	3.2 mm	7.6 mm	1.2 mm	8 mm	—	25	93172A210	00000
		M8 × 1.25 mm	0	25 mm	16 mm	3.6 mm	9.2 mm	2 mm	9.3 mm	—	10	94579A710	0000
		M8 × 1.25 mm	1	25 mm	16 mm	3.6 mm	9.2 mm	2 mm	9.6 mm	—	25	93172A220	00000
		M10 × 1.5 mm	0	28.5 mm	16 mm	3.6 mm	11.8 mm	2.4 mm	11.9 mm	—	10	94579A720	0000
		M10 × 1.5 mm	1	28.6 mm	16 mm	3.6 mm	11.8 mm	2.4 mm	12.2 mm	—	10	93172A230	0000


		Zinc-Plated Steel



				6-32	0	5/8"	7/16"	3/32"	3/16"	1/32"	13/64"	—	10	94579A730	0000


				8-32	0	5/8"	7/16"	3/32"	13/64"	1/32"	7/32"	—	10	94579A740	0000
				10-24	0	5/8"	7/16"	3/32"	15/64"	1/32"	1/4"	—	10	94579A750	0000
				10-32	0	5/8"	7/16"	3/32"	15/64"	1/32"	1/4"	—	10	94579A760	0000
				1/4"-20	0	13/16"	1/2"	1/8"	19/64"	1/16"	5/16"	—	10	94579A770	0000
				1/4"-28	0	13/16"	1/2"	1/8"	19/64"	1/16"	5/16"	—	10	94579A780	0000
				5/16"-18	0	63/64"	5/8"	9/64"	23/64"	3/32"	3/8"	—	10	94579A790	0000
				5/16"-24	0	63/64"	5/8"	9/64"	23/64"	3/32"	3/8"	—	10	94579A810	0000
				3/8"-16	0	1 1/8"	5/8"	9/64"	7/16"	3/32"	29/64"	—	10	94579A820	0000
				3/8"-24	0	1 1/8"	5/8"	9/64"	7/16"	3/32"	29/64"	—	10	94579A830	0000
				M3.5 × 0.6 mm	0	16 mm	11 mm	2.4 mm	4.8 mm	0.8 mm	4.9 mm	—	10	94579A840	0000


				M4 × 0.7 mm	0	16 mm	11 mm	2.4 mm	5.2 mm	0.8 mm	5.3 mm	—	10	94579A850	0000
				M5 × 0.8 mm	0	16 mm	11 mm	2.4 mm	6 mm	0.8 mm	6.1 mm	—	10	94579A860	0000
				M6 × 1 mm	0	20.5 mm	13 mm	3.2 mm	7.6 mm	1.2 mm	7.7 mm	—	10	94579A870	0000
				M8 × 1.25 mm	0	25 mm	16 mm	3.6 mm	9.2 mm	2 mm	9.3 mm	—	10	94579A880	0000
				M10 × 1.5 mm	0	28.5 mm	16 mm	3.6 mm	11.8 mm	2.4 mm	11.9 mm	—	10	94579A890	00000


18-8 Stainless Steel



				8-32	0	5/8"	3/8"	3/32"	13/64"	1/32"	7/32"	—	10	94581A117	00000


				8-32	1	5/8"	3/8"	3/32"	13/64"	1/32"	7/32"	—	10	92413A110	0000
				10-24	0	5/8"	3/8"	3/32"	15/64"	1/32"	1/4"	—	10	94581A123	00000
				10-24	1	5/8"	3/8"	3/32"	15/64"	1/32"	1/4"	Material Certificate	10	92413A120	0000
				10-32	0	5/8"	3/8"	3/32"	15/64"	1/32"	1/4"	Material Certificate	10	94581A128	00000
				10-32	1	5/8"	3/8"	3/32"	15/64"	1/32"	1/4"	Material Certificate	10	92413A150	0000
				1/4"-20	0	13/16"	1/2"	1/8"	19/64"	1/16"	5/16"	Material Certificate	10	94581A132	00000
				1/4"-20	1	13/16"	1/2"	1/8"	19/64"	3/64"	5/16"	—	5	92413A130	0000
				1/4"-28	0	13/16"	1/2"	1/8"	19/64"	1/16"	5/16"	—	10	94581A136	00000
				5/16"-18	0	1 1/8"	5/8"	9/64"	23/64"	3/32"	3/8"	Material Certificate	5	94581A139	00000
				5/16"-18	1	1 1/8"	5/8"	9/64"	23/64"	5/64"	3/8"	—	5	92413A140	00000


				5/16"-24	0	1 1/8"	5/8"	9/64"	23/64"	3/32"	3/8"	—	5	94581A144	0000
				3/8"-16	0	1 1/8"	5/8"	9/64"	7/16"	3/32"	29/64"	—	5	94581A148	00000
				3/8"-16	1	1 1/8"	5/8"	9/64"	7/16"	3/32"	29/64"	—	5	92413A160	00000
				3/8"-24	0	1 1/8"	5/8"	9/64"	7/16"	3/32"	29/64"	—	5	94581A151	0000
				M4 × 0.7 mm	0	15.9 mm	9.6 mm	2.4 mm	5.2 mm	0.8 mm	5.6 mm	—	10	94581A161	00000
				M4 × 0.7 mm	1	15.9 mm	9.6 mm	2.4 mm	5.2 mm	0.8 mm	5.6 mm	Material Certificate	5	92413A190	0000
				M5 × 0.8 mm	0	15.9 mm	9.6 mm	2.4 mm	6 mm	0.8 mm	6.4 mm	—	10	94581A162	00000
				M5 × 0.8 mm	1	15.9 mm	9.6 mm	2.4 mm	6 mm	0.8 mm	6.4 mm	Material Certificate	5	92413A210	0000
				M6 × 1 mm	0	20.6 mm	12.9 mm	3.2 mm	7.6 mm	1.3 mm	8 mm	—	10	94581A164	00000
				M6 × 1 mm	1	20.6 mm	12.9 mm	3.2 mm	7.6 mm	1.3 mm	8 mm	Material Certificate	5	92413A170	0000


				M8 × 1.25 mm	0	28.6 mm	16.15 mm	3.6 mm	9.2 mm	2 mm	9.6 mm	—	5	94581A171	00000
				M8 × 1.25 mm	1	28.6 mm	16.1 mm	3.6 mm	9.2 mm	2 mm	9.6 mm	—	5	92413A180	00000

Two-Barrel Low-Profile Rectangular Weld Nuts

Fuse two threaded holes to metal with just one weld. These weld nuts have two short barrels with the same threads for installing screws side by side. They add the strength of two joints with a single nut. Their slim footprint fits in tight areas such as channels.

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.

		Base			Barrel
	Thread Size	Lg.	Wd.	Thk.	Dia.	Ht.	For Hole Dia.	Pkg. Qty.		Pkg.
Steel



		6-32	7/8"	1/2"	3/32"	3/16"	1/32"	13/64"	10	92262A250	000000


		6-32	1 3/8"	1/2"	3/32"	3/16"	1/32"	13/64"	10	92262A210	0000
		8-32	7/8"	1/2"	3/32"	13/64"	1/32"	7/32"	10	92262A220	0000
		8-32	1 3/8"	1/2"	3/32"	13/64"	1/32"	7/32"	10	92262A150	0000
		10-24	1 1/8"	1/2"	3/32"	15/64"	1/32"	1/4"	10	92262A180	0000
		10-24	1 5/8"	1/2"	3/32"	15/64"	1/32"	1/4"	10	92262A170	00000
		10-32	1 1/8"	1/2"	3/32"	15/64"	1/32"	1/4"	10	92262A230	0000
		10-32	1 5/8"	1/2"	3/32"	15/64"	1/32"	1/4"	10	92262A240	0000
		1/4"-20	1 1/4"	1/2"	1/8"	19/64"	3/64"	5/16"	10	92262A160	00000
		1/4"-20	1 1/2"	1/2"	1/8"	19/64"	3/64"	5/16"	10	92262A130	0000
		1/4"-20	1 3/4"	1/2"	1/8"	19/64"	3/64"	5/16"	10	92262A140	0000


		1/4"-20	2"	1/2"	1/8"	19/64"	3/64"	5/16"	10	92262A190	00000
		5/16"-18	1 11/16"	5/8"	9/64"	23/64"	5/64"	3/8"	10	92262A120	00000
		3/8"-16	2 1/16"	5/8"	9/64"	7/16"	3/32"	29/64"	10	92262A110	00000