Mold In Threaded Inserts

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Unified Standard Class 2B

Threaded Insert Securing Type

Knurled

DFARS Specialty Metals

Exempt

Tensile Strength

40,000 psi to 99,999 psi

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

Yes

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Individual

Export Control Classification Number (ECCN)

EAR99

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106 Products

About Threaded Inserts

Choose the right threaded insert for your application and learn how to install it securely.

Performance

Twist Resistant

Hold fast against twisting and loosening

11 products

Conductive

Create a path for electricity

64 products

Performance

Lightweight

For applications with strict weight limits

18 products

Nonmagnetic

Avoid interference with circuit boards and other sensitive electronics

64 products

Mold-In Threaded Inserts for Plastic

Mold the strongest metal threads into plastic parts. Designed for injection molding, these inserts become inseparable from your part. They form a stronger bond than heat-set and press-fit inserts and are better for frequent use than threads cut directly into material. Unlike heat-set inserts, they can be used in a wide variety of plastics, including thermoset plastics that can’t be reformed.

To install, position these inserts in your mold cavity with a core pin (not included).

Brass—Conductive and nonmagnetic, these inserts are useful for electrical applications. They resist moisture but aren't as strong as steel inserts.

Lightweight Aluminum—At one-third the weight of steel or brass, use these inserts in robotics, aerospace parts, and other applications with strict weight limits. They also resist rust about as well as stainless steel but aren't as strong. Since inserts are lead-free, they can be safely recycled.

18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals. Since they’re lead-free, they can be safely recycled.

	Thread Size	Installed Lg.	Drill Bit Size	For Max. Hole Dia.	For Core Pin Dia.	Pkg. Qty.		Pkg.
Brass



		2-56	0.156"	30 Ga.	0.133"	0.072"	25	7588N59	00000


		4-40	0.187"	19 Ga.	0.169"	0.089"	25	7588N61	00000
		6-32	0.250"	8 Ga.	0.200"	0.110"	25	7588N62	00000
		8-32	0.281"	1 Ga.	0.232"	0.136"	25	7588N63	00000
		10-24	0.312"	H	0.266"	0.154"	25	7588N64	00000
		10-32	0.312"	H	0.266"	0.161"	25	7588N65	00000
		1/4"-20	0.468"	25/64"	0.391"	0.204"	25	7588N66	00000
		1/4"-28	0.468"	25/64"	0.391"	0.215"	25	7588N67	0000
		5/16"-18	0.562"	33/64"	0.516"	0.261"	10	7588N68	00000
		3/8"-16	0.687"	14.5 mm	0.578"	0.318"	5	7588N69	0000
		1/2"-13	0.875"	49/64"	0.766"	0.430"	1	7588N71	0000


		M2 x 0.4 mm	3.96 mm	30 Ga.	3.37 mm	1.700 mm	25	7588N72	00000
		M3 x 0.5 mm	4.75 mm	19 Ga.	4.29 mm	2.500 mm	25	7588N73	00000
		M3.5 x 0.6 mm	6.35 mm	8 Ga.	5.08 mm	3.000 mm	25	7588N74	00000
		M4 x 0.7 mm	7.14 mm	1 Ga.	5.89 mm	3.400 mm	25	7588N75	00000
		M5 x 0.8 mm	7.92 mm	H	6.75 mm	4.300 mm	25	7588N76	00000
		M6 x 1 mm	11.89 mm	25/64"	9.93 mm	5.100 mm	10	7588N77	0000
		M8 x 1.25 mm	14.27 mm	33/64"	13.1 mm	6.800 mm	5	7588N78	0000
		M10 x 1.5 mm	17.45 mm	14.5 mm	14.68 mm	8.600 mm	5	7588N79	0000
		M12 x 1.75 mm	22.23 mm	49/64"	19.45 mm	10.300 mm	5	7588N81	0000


		Lightweight Aluminum



				4-40	0.187"	19 Ga.	0.169"	0.089"	25	7588N12	0000


				6-32	0.250"	8 Ga.	0.200"	0.110"	25	7588N13	0000
				8-32	0.256"	I	0.272"	0.136"	25	7588N23	00000
				10-24	0.325"	N	0.309"	0.148"	25	7588N24	00000
				1/4"-20	0.394"	23/64"	0.367"	0.200"	10	7588N25	0000
				5/16"-18	0.463"	29/64"	0.463"	0.257"	5	7588N26	0000
				M4 x 0.7 mm	6.5 mm	I	6.9 mm	3.200 mm	10	7588N27	0000
				M5 x 0.8 mm	8.25 mm	N	7.85 mm	4.300 mm	10	7588N28	0000
				M6 x 1 mm	10.00 mm	23/64"	9.33 mm	4.900 mm	10	7588N29	00000
				M8 x 1.25 mm	11.75 mm	29/64"	11.75 mm	6.800 mm	10	7588N31	00000


				18-8 Stainless Steel



						0-80	0.125"	48 Ga.	0.078"	0.050"	10	7588N99	0000


						2-56	0.125"	9/64"	0.142"	0.072"	25	7588N101	00000
						4-40	0.188"	18 Ga.	0.171"	0.089"	25	7588N102	00000
						6-32	0.219"	7 Ga.	0.202"	0.110"	25	7588N103	00000
						8-32	0.250"	2 Ga.	0.226"	0.136"	10	7588N104	0000
						10-24	0.281"	F	0.259"	0.154"	10	7588N105	0000
						10-32	0.281"	F	0.259"	0.161"	10	7588N106	0000
						1/4"-20	0.375"	O	0.321"	0.204"	10	7588N107	0000
						5/16"-18	0.469"	Y	0.404"	0.261"	5	7588N108	00000
						3/8"-16	0.562"	29/64"	0.466"	0.318"	5	7588N109	00000
						M3 x 0.5 mm	4.77 mm	18 Ga.	4.34 mm	2.500 mm	10	7588N111	0000


M4 x 0.7 mm	6.35 mm					2 Ga.	5.74 mm	3.400 mm	10	7588N112	0000
M5 x 0.8 mm	7.13 mm					F	6.57 mm	4.300 mm	10	7588N113	00000
M6 x 1 mm	9.53 mm					O	8.15 mm	5.100 mm	10	7588N114	00000
M10 x 1.5 mm	14.27 mm					29/64"	11.84 mm	8.000 mm	5	7588N115	00000

Closed-End Mold-In Threaded Inserts for Plastic

The closed end prevents molten plastic from seeping in and clogging the threads. Designed for injection molding, these inserts become inseparable from your part. They form a stronger bond than heat-set and press-fit inserts and last longer than threads cut directly into material. Unlike heat-set inserts, these work in a wide variety of plastics, including thermoset plastics that can’t be reformed.

To install, position these inserts in your mold cavity with a core pin (not included).

Brass—Conductive and nonmagnetic, these inserts are useful for electrical applications. They resist moisture but aren't as strong as steel inserts.

18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals. Since they’re lead-free, they can be safely recycled.

	Thread Size	Installed Lg.	Drill Bit Size	For Max. Hole Dia.	For Core Pin Dia.	Pkg. Qty.		Pkg.
Brass



		2-56	0.156"	9/64"	0.142"	0.067"	25	7588N32	00000


		2-56	0.219"	9/64"	0.142"	0.067"	25	7588N33	0000
		4-40	0.205"	18 Ga.	0.171"	0.089"	10	7588N34	0000
		4-40	0.281"	18 Ga.	0.171"	0.089"	10	7588N35	0000
		4-40	0.344"	18 Ga.	0.171"	0.089"	10	7588N36	0000
		6-32	0.250"	7 Ga.	0.202"	0.104"	25	7588N37	0000
		6-32	0.344"	7 Ga.	0.202"	0.104"	25	7588N38	0000
		6-32	0.469"	7 Ga.	0.202"	0.104"	10	7588N39	0000
		8-32	0.469"	2 Ga.	0.226"	0.130"	10	7588N41	0000
		10-24	0.438"	F	0.259"	0.145"	10	7588N42	0000
		10-24	0.531"	F	0.259"	0.145"	10	7588N43	0000


		10-24	0.750"	F	0.259"	0.145"	5	7588N44	0000
		10-32	0.281"	F	0.259"	0.156"	10	7588N45	0000
		10-32	0.438"	F	0.259"	0.156"	10	7588N46	0000
		10-32	0.531"	F	0.259"	0.156"	10	7588N47	0000
		1/4"-20	0.531"	O	0.321"	0.196"	10	7588N48	0000
		1/4"-20	0.625"	O	0.321"	0.196"	10	7588N49	0000
		5/16"-18	0.719"	Y	0.404"	0.252"	5	7588N51	0000
		3/8"-16	0.812"	29/64"	0.466"	0.307"	5	7588N52	0000
		M2 x 0.4 mm	4.75 mm	30 Ga.	3.38 mm	1.700 mm	25	7588N11	0000
		M3 x 0.5 mm	5.21 mm	18 Ga.	4.34 mm	2.500 mm	25	7588N53	0000


		M3 x 0.5 mm	8.74 mm	18 Ga.	4.34 mm	2.500 mm	10	7588N54	0000
		M4 x 0.7 mm	11.91 mm	2 Ga.	5.74 mm	3.200 mm	5	7588N55	0000
		M5 x 0.8 mm	13.49 mm	F	6.57 mm	4.300 mm	10	7588N56	0000
		M6 x 1 mm	13.49 mm	O	8.15 mm	4.900 mm	10	7588N57	0000
		M6 x 1 mm	15.88 mm	O	8.15 mm	4.900 mm	10	7588N58	0000


		Lightweight Aluminum



				8-32	0.380"	I	0.272"	0.136"	25	7588N14	0000


				10-24	0.459"	N	0.309"	0.148"	10	7588N15	0000
				1/4"-20	0.610"	23/64"	0.367"	0.200"	10	7588N16	0000
				5/16"-18	0.697"	29/64"	0.463"	0.257"	5	7588N17	0000
				M4 x 0.7 mm	9.65 mm	I	6.9 mm	3.200 mm	25	7588N18	0000
				M5 x 0.8 mm	11.65 mm	N	7.85 mm	4.300 mm	10	7588N19	0000
				M6 x 1 mm	15.5 mm	23/64"	9.33 mm	4.900 mm	10	7588N21	0000
				M8 x 1.25 mm	17.7 mm	29/64"	11.75 mm	6.800 mm	5	7588N22	0000


				18-8 Stainless Steel



						2-56	0.156"	9/64"	0.142"	0.072"	10	7588N82	0000


						4-40	0.205"	18 Ga.	0.171"	0.089"	10	7588N83	0000
						6-32	0.250"	7 Ga.	0.202"	0.110"	10	7588N84	0000
						8-32	0.250"	2 Ga.	0.226"	0.136"	10	7588N85	0000
						10-24	0.531"	F	0.259"	0.154"	10	7588N86	0000
10-32						0.281"	F	0.259"	0.161"	10	7588N87	0000
1/4"-20	0.344"					O	0.321"	0.204"	10	7588N88	00000
5/16"-18	0.594"					Y	0.404"	0.261"	5	7588N89	0000
3/8"-16	0.500"					29/64"	0.466"	0.318"	5	7588N91	0000
M2.5 x 0.45 mm	4.78 mm					18 Ga.	4.34 mm	2.100 mm	10	7588N92	0000
M3 x 0.5 mm	5.21 mm					18 Ga.	4.34 mm	2.100 mm	10	7588N93	0000


M3.5 x 0.6 mm	6.35 mm					7 Ga.	5.13 mm	3.000 mm	10	7588N94	0000
M4 x 0.7 mm	6.35 mm					2 Ga.	5.74 mm	3.400 mm	10	7588N95	0000
M5 x 0.8 mm	7.13 mm					F	6.57 mm	4.300 mm	10	7588N96	0000
M6 x 1 mm	8.73 mm					O	8.15 mm	5.100 mm	10	7588N97	00000
M8 x 1.25 mm	11.13 mm					Y	10.26 mm	6.800 mm	5	7588N98	0000

Twist-Resistant Closed-End Mold-In Threaded Inserts for Plastic

Install threads that hold fast against twisting and pulling. These inserts have six ridged points for maximum contact and a more stable hold than other mold-in inserts. Since plastic flows into the knurls and ridges as inserts are molded in, they form a more durable bond than heat-set and press-fit inserts. You can even use them with phenolic and other thermoset plastics. Inserts have a closed end that prevents plastic from filling the threads during molding.

To install, position these inserts in your mold cavity with a core pin (not included).

18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals. Since they’re lead-free, they can be safely recycled.

	Installed Lg.	Drill Bit Size	Overall Dia.	For Core Pin Dia.	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	8-32	0.530"	K	0.52"	0.130"	10	7497N11	000000


	10-24	0.530"	K	0.52"	0.145"	10	7497N12	00000
	10-32	0.530"	K	0.52"	0.156"	5	7497N13	0000
	1/4"-20	0.670"	3/8"	0.7"	0.196"	5	7497N14	00000
	5/16"-18	0.830"	12 mm	0.91"	0.252"	1	7497N15	0000
	3/8"-16	0.960"	14.5 mm	1.04"	0.307"	1	7497N16	0000
	M4 x 0.7 mm	13.5 mm	K	0.52"	3.200 mm	10	7497N17	00000
	M5 x 0.8 mm	13.5 mm	K	0.52"	4.100 mm	10	7497N18	00000
	M6 x 1 mm	17 mm	3/8"	0.7"	4.900 mm	5	7497N19	00000
	M8 x 1.25 mm	21 mm	12 mm	0.91"	6.600 mm	1	7497N21	0000
	M10 x 1.5 mm	24.5 mm	14.5 mm	1.04"	8.300 mm	1	7497N22	0000