Mounting Hardware – Mouser Peru

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Molded-In Inserts

SI (Standard Inserts) Molded-In Inserts are installed during the molding process, and the inserts are located in the mold cavity by core pins. The core pins are withdrawn when the mold is opened, leaving the inserts permanently encapsulated in the plastic section with only the threads exposed. Inserts installed during the molding process avoid the need for additional procedures or installation equipment. The molded-in inserts include blind threaded inserts (IBA/IBB/IBC), self-locking blind threaded inserts (ILBC), through threaded inserts ( ITA/ITB/ITC), and knurled inserts (STKA/STKB/STKC). Typical applications include electronics (wearables, smartphones, and hand-held devices), automotive, aerospace and defense, medical, transportation, industrial, and recreational equipment.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (PEN) Filter the results in the table by unit price based on your quantity.	Qty.	Product	Type	Material	Length	Outside Diameter	Thread Size
Mounting Hardware MOLD-IN INSERT,BLIND,STAINLESS IBC-M3-6 SI 1: S/3.66 4,197In Stock 10,000Expected 10/30/2026	Mfr. Part # IBC-M3-6 Mouser Part # 153-IBC-M3-6	SI	Mounting Hardware MOLD-IN INSERT,BLIND,STAINLESS Learn More about SI molded in inserts	Datasheet	4,197In Stock 10,000Expected 10/30/2026	S/3.66 S/2.60 S/2.08 S/1.87 View S/1.74 S/1.69 S/1.60 S/1.56 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	7.13 mm	4.78 mm	M3
Mounting Hardware MOLD-IN INSERT,BLIND,STAINLESS IBC-M4-8 SI 1: S/3.78 4,006In Stock 5,000Expected 10/14/2026	Mfr. Part # IBC-M4-8 Mouser Part # 153-IBC-M4-8	SI	Mounting Hardware MOLD-IN INSERT,BLIND,STAINLESS Learn More about SI molded in inserts	Datasheet	4,006In Stock 5,000Expected 10/14/2026	S/3.78 S/2.81 S/2.21 S/1.88 View S/1.81 S/1.79	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	10.31 mm	6.35 mm	M4
Mounting Hardware MOLD-IN INSERT,BLIND,STAINLESS IBC-832-12 SI 1: S/4.32 9,092In Stock	Mfr. Part # IBC-832-12 Mouser Part # 153-IBC-832-12	SI	Mounting Hardware MOLD-IN INSERT,BLIND,STAINLESS Learn More about SI molded in inserts	Datasheet	9,092In Stock	S/4.32 S/3.24 S/2.52 S/2.37 View S/2.32 S/2.25 S/2.17 S/2.09 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	0.531 in	0.25 in	8-32
Mounting Hardware MOLD-IN INSERT, BLIND, BRASS IBB-0420-10 SI 1: S/3.35 4,993In Stock	Mfr. Part # IBB-0420-10 Mouser Part # 153-IBB-0420-10	SI	Mounting Hardware MOLD-IN INSERT, BLIND, BRASS Learn More about SI molded in inserts	Datasheet	4,993In Stock	S/3.35 S/2.48 S/1.93 S/1.64 View S/1.60 S/1.58	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Leaded Brass	0.719 in	0.344 in	1/4-20
Mounting Hardware MOLD-IN INSERT, BRASS ITB-M5 SI 1: S/2.34 8,027In Stock	Mfr. Part # ITB-M5 Mouser Part # 153-ITB-M5	SI	Mounting Hardware MOLD-IN INSERT, BRASS Learn More about SI molded in inserts	Datasheet	8,027In Stock	S/2.34 S/1.65 S/1.32 S/1.24 View S/1.05 S/1.01 S/0.985 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Leaded Brass	7.13 mm	7.13 mm	M5
Mounting Hardware MOLD-IN INSERT, ALUM ITA-M5 SI 1: S/1.71 10,000In Stock	Mfr. Part # ITA-M5 Mouser Part # 153-ITA-M5	SI	Mounting Hardware MOLD-IN INSERT, ALUM Learn More about SI molded in inserts	Datasheet	10,000In Stock	S/1.71 S/1.20 S/0.958 S/0.864 View S/0.79 S/0.779 S/0.732 S/0.716 S/0.693	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	7.13 mm	7.13 mm	M5
Mounting Hardware INTERNAL-THRD SPACR KBRL BRASS STKB-M3-3 SI 1: S/2.41 19,865In Stock	Mfr. Part # STKB-M3-3 Mouser Part # 153-STKB-M3-3	SI	Mounting Hardware INTERNAL-THRD SPACR KBRL BRASS Learn More about SI molded in inserts	Datasheet	19,865In Stock	S/2.41 S/1.70 S/1.37 S/1.23 View S/1.14 S/1.11 S/1.04 S/1.02 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Leaded Brass	3 mm	4.74 mm	M3
Mounting Hardware MOLD-IN INSERT,BLIND,STAINLESS IBC-632-8 SI 1: S/3.46 9,908In Stock	Mfr. Part # IBC-632-8 Mouser Part # 153-IBC-632-8	SI	Mounting Hardware MOLD-IN INSERT,BLIND,STAINLESS Learn More about SI molded in inserts	Datasheet	9,908In Stock	S/3.46 S/2.57 S/2.00 S/1.88 View S/1.84 S/1.78 S/1.72 S/1.65 S/1.63	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	0.406 in	0.219 in	6-32
Mounting Hardware MOLD-IN INSERT, BLIND, BRASS IBB-632-6 SI 1: S/1.91 1,282In Stock	Mfr. Part # IBB-632-6 Mouser Part # 153-IBB-632-6	SI	Mounting Hardware MOLD-IN INSERT, BLIND, BRASS Learn More about SI molded in inserts	Datasheet	1,282In Stock	S/1.91 S/1.35 S/1.09 S/0.977 View S/0.907 S/0.884 S/0.833 S/0.814 S/0.786	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Leaded Brass	0.344 in	0.219 in	6-32
Mounting Hardware INTERNAL THRD SPACER KNRL S/S STKC-M3-4 SI 1: S/3.35 701In Stock	Mfr. Part # STKC-M3-4 Mouser Part # 153-STKC-M3-4	SI	Mounting Hardware INTERNAL THRD SPACER KNRL S/S Learn More about SI molded in inserts	Datasheet	701In Stock	S/3.35 S/2.40 S/1.92 S/1.73 View S/1.60 S/1.56 S/1.47 S/1.44 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	4 mm	4.74 mm	M3
Mounting Hardware MOLD-IN INSERT, BLIND, BRASS IBB-M5-12 SI 1: S/3.00 931In Stock	Mfr. Part # IBB-M5-12 Mouser Part # 153-IBB-M5-12	SI	Mounting Hardware MOLD-IN INSERT, BLIND, BRASS Learn More about SI molded in inserts	Datasheet	931In Stock	S/3.00 S/2.12 S/1.69 S/1.60 View S/1.35 S/1.30 S/1.27 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Leaded Brass	13.48 mm	7.14 mm	M5
Mounting Hardware MOLD-IN INSERT, ALUM ITA-M3 SI 1: S/1.25 579In Stock	Mfr. Part # ITA-M3 Mouser Part # 153-ITA-M3	SI	Mounting Hardware MOLD-IN INSERT, ALUM Learn More about SI molded in inserts	Datasheet	579In Stock	S/1.25 S/0.903 S/0.724 S/0.65 View S/0.603 S/0.588 S/0.553 S/0.541 S/0.525	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	4.77 mm	4.77 mm	M3
Mounting Hardware MOLD-IN INSERT, BLIND, BRASS IBB-440-8 SI 1: S/1.79 2,435In Stock	Mfr. Part # IBB-440-8 Mouser Part # 153-IBB-440-8	SI	Mounting Hardware MOLD-IN INSERT, BLIND, BRASS Learn More about SI molded in inserts	Datasheet	2,435In Stock	S/1.79 S/1.29 S/1.04 S/0.93 View S/0.864 S/0.841 S/0.794 S/0.775 S/0.747	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Leaded Brass	0.344 in	0.188 in	4-40
Mounting Hardware MOLD-IN INSERT, BRASS ITB-M4 SI 1: S/2.37 807In Stock	Mfr. Part # ITB-M4 Mouser Part # 153-ITB-M4	SI	Mounting Hardware MOLD-IN INSERT, BRASS Learn More about SI molded in inserts	Datasheet	807In Stock	S/2.37 S/1.67 S/1.34 S/1.26 View S/1.06 S/1.02 S/0.996 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Leaded Brass	6.35 mm	6.35 mm	M4
Mounting Hardware MOLD-IN INSERT, BLIND, BRASS IBB-632-8 SI 1: S/2.10 1,900In Stock	Mfr. Part # IBB-632-8 Mouser Part # 153-IBB-632-8	SI	Mounting Hardware MOLD-IN INSERT, BLIND, BRASS Learn More about SI molded in inserts	Datasheet	1,900In Stock	S/2.10 S/1.50 S/1.20 S/1.08 View S/1.00 S/0.977 S/0.919 S/0.899 S/0.868	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Leaded Brass	0.406 in	0.219 in	6-32
Mounting Hardware MOLD-IN INSERT, BLIND, BRASS IBB-M4-6 SI 1: S/1.95 1,997In Stock	Mfr. Part # IBB-M4-6 Mouser Part # 153-IBB-M4-6	SI	Mounting Hardware MOLD-IN INSERT, BLIND, BRASS Learn More about SI molded in inserts	Datasheet	1,997In Stock	S/1.95 S/1.38 S/1.11 S/1.04 View S/0.884 S/0.845 S/0.829 S/0.798	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Leaded Brass	8.73 mm	6.35 mm	M4
Mounting Hardware INTERNAL-THRD SPACR KNRL BRASS STKB-M4-4 SI 1: S/2.53 1,544In Stock	Mfr. Part # STKB-M4-4 Mouser Part # 153-STKB-M4-4	SI	Mounting Hardware INTERNAL-THRD SPACR KNRL BRASS Learn More about SI molded in inserts	Datasheet	1,544In Stock	S/2.53 S/1.80 S/1.44 S/1.30 View S/1.20 S/1.17 S/1.10 S/1.08 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Leaded Brass	4 mm	6.35 mm	M4
Mounting Hardware MOLD-IN INSERT, BRASS ITB-080 SI 1: S/3.74 256In Stock 92On Order	Mfr. Part # ITB-080 Mouser Part # 153-ITB-080	SI	Mounting Hardware MOLD-IN INSERT, BRASS Learn More about SI molded in inserts	Datasheet	256In Stock 92On Order	S/3.74 S/2.81 S/2.19 S/2.06 View S/2.02 S/1.95 S/1.88 S/1.81 S/1.79	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Leaded Brass	0.125 in	0.109 in	0-80
Mounting Hardware MOLD-IN INSERT, STAINLESS ITC-M3 SI 1: S/2.65 1,263In Stock	Mfr. Part # ITC-M3 Mouser Part # 153-ITC-M3	SI	Mounting Hardware MOLD-IN INSERT, STAINLESS Learn More about SI molded in inserts	Datasheet	1,263In Stock	S/2.65 S/1.88 S/1.51 S/1.42 View S/1.20 S/1.15 S/1.12 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	4.77 mm	4.77 mm	M3
Mounting Hardware INTERNAL-THRD SPACR KNRL BRASS STKB-M4-3 SI 1: S/2.41 997In Stock	Mfr. Part # STKB-M4-3 Mouser Part # 153-STKB-M4-3	SI	Mounting Hardware INTERNAL-THRD SPACR KNRL BRASS Learn More about SI molded in inserts	Datasheet	997In Stock	S/2.41 S/1.72 S/1.38 S/1.24 View S/1.15 S/1.12 S/1.06 S/1.04 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Leaded Brass	3 mm	6.35 mm	M4
Mounting Hardware MOLD-IN INSERT,BLIND,STAINLESS IBC-632-6 SI 1: S/3.39 10,567In Stock	Mfr. Part # IBC-632-6 Mouser Part # 153-IBC-632-6	SI	Mounting Hardware MOLD-IN INSERT,BLIND,STAINLESS Learn More about SI molded in inserts	Datasheet	10,567In Stock	S/3.39 S/2.51 S/1.96 S/1.85 View S/1.80 S/1.74 S/1.68 S/1.62 S/1.60	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	0.344 in	0.219 in	6-32
Mounting Hardware INTERNAL-THRD SPACR KNRL BRASS STKB-832-24 SI 1: S/3.43 9,125In Stock	Mfr. Part # STKB-832-24 Mouser Part # 153-STKB-832-24	SI	Mounting Hardware INTERNAL-THRD SPACR KNRL BRASS Learn More about SI molded in inserts	Datasheet	9,125In Stock	S/3.43 S/2.55 S/1.99 S/1.87 View S/1.83 S/1.77 S/1.70 S/1.65 S/1.62	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Leaded Brass	0.75 in	0.25 in	8-32
Mounting Hardware MOLD-IN INSERT, BLIND, BRASS IBB-440-6 SI 1: S/1.71 930In Stock	Mfr. Part # IBB-440-6 Mouser Part # 153-IBB-440-6	SI	Mounting Hardware MOLD-IN INSERT, BLIND, BRASS Learn More about SI molded in inserts	Datasheet	930In Stock	S/1.71 S/1.24 S/0.989 S/0.891 View S/0.829 S/0.806 S/0.759 S/0.743 S/0.716	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Leaded Brass	0.281 in	0.188 in	4-40
Mounting Hardware MOLD-IN INSERT, BLIND, BRASS IBB-M4-8 SI 1: S/2.26 488In Stock	Mfr. Part # IBB-M4-8 Mouser Part # 153-IBB-M4-8	SI	Mounting Hardware MOLD-IN INSERT, BLIND, BRASS Learn More about SI molded in inserts	Datasheet	488In Stock	S/2.26 S/1.61 S/1.29 S/1.16 View S/1.07 S/1.05 S/0.985 S/0.965 S/0.934	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Leaded Brass	10.31 mm	6.35 mm	M4
Mounting Hardware MOLD-IN INSERT,BLIND,STAINLESS IBC-440-6 SI 1: S/3.43 477In Stock	Mfr. Part # IBC-440-6 Mouser Part # 153-IBC-440-6	SI	Mounting Hardware MOLD-IN INSERT,BLIND,STAINLESS Learn More about SI molded in inserts	Datasheet	477In Stock	S/3.43 S/2.45 S/1.96 S/1.77 View S/1.64 S/1.60 S/1.51 S/1.47 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	0.281 in	0.188 in	4-40