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 The core pins are withdrawn when the mold is opened, leaving the inserts permanently encapsulated in the plastic section with only the threads exposed.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.

Results: 558
Select Image Part # Mfr. Description Datasheet Availability Pricing (GBP) Filter the results in the table by unit price based on your quantity. Qty. RoHS ECAD Model Product Type Material Length Outside Diameter Thread Size
SI Mounting Fixings ASSEMBLY,LOCKING 1,231In Stock
5,000Expected 18/03/2026
Min.: 1
Mult.: 1

Inserts Threaded Insert Stainless Steel 0.406 in 0.25 in 8-32
SI Mounting Fixings MOLD-IN INSERT, BRASS 1,000In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Leaded Brass 7.13 mm 7.13 mm M5
SI Mounting Fixings INTERNAL-THRD SPACR KNRL BRASS 2,087In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Leaded Brass 4 mm 4.74 mm M3
SI Mounting Fixings MOLD-IN INSERT, BLIND, BRASS 727In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Leaded Brass 13.48 mm 6.35 mm M4
SI Mounting Fixings INTERNAL-THRD SPACR KBRL BRASS 20,385In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Leaded Brass 3 mm 4.74 mm M3
SI Mounting Fixings INTERNAL-THRD SPACR KNRL BRASS 810In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Leaded Brass 0.187 in 0.375 in 1/4-20
SI Mounting Fixings INTERNAL THRD SPACER KNRL S/S 111In Stock
650On Order
Min.: 1
Mult.: 1

Inserts Threaded Insert Stainless Steel 4 mm 4.74 mm M3
SI Mounting Fixings MOLD-IN INSERT,BLIND,STAINLESS 393In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Stainless Steel 0.719 in 0.344 in 1/4-20
SI Mounting Fixings INTERNAL-THRD SPACR KNRL BRASS 229In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Leaded Brass 0.25 in 0.375 in 1/4-20
SI Mounting Fixings MOLD-IN INSERT, BLIND, BRASS 1,498In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Leaded Brass 0.344 in 0.188 in 4-40
SI Mounting Fixings MOLD-IN INSERT, BLIND, BRASS 1,992In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Leaded Brass 5.21 mm 4.78 mm M3
SI Mounting Fixings MOLD-IN INSERT,BLIND,STAINLESS 1,997In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Stainless Steel 0.344 in 0.219 in 6-32
SI Mounting Fixings INTERNAL-THRD SPACR KNRL BRASS 615In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Leaded Brass 0.125 in 0.25 in 8-32
SI Mounting Fixings MOLD-IN INSERT, BLIND, BRASS 1,610In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Leaded Brass 7.13 mm 4.78 mm M3
SI Mounting Fixings INTERNAL-THRD SPACR KNRL BRASS 500In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Leaded Brass 0.375 in 0.219 in 6-32
SI Mounting Fixings INTERNAL-THRD SPACR KNRL BRASS 3,100In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Leaded Brass 8 mm 4.74 mm M3
SI Mounting Fixings INTERNAL-THRD SPACR KNRL BRASS 801In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Leaded Brass 0.187 in 0.188 in 4-40
SI Mounting Fixings MOLD-IN INSERT ALUM 2,828In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Aluminum 10.31 mm 4.78 mm M3
SI Mounting Fixings MOLD-IN INSERT, BLIND, BRASS 1,719In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Leaded Brass 0.344 in 0.25 in 8-32
SI Mounting Fixings INTERNAL-THRD SPACR KNRL BRASS 350In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Leaded Brass 6 mm 4.74 mm M3
SI Mounting Fixings MOLD-IN INSERT, BLIND, ALUM 294In Stock
1,000Expected 25/05/2026
Min.: 1
Mult.: 1

Inserts Threaded Insert Aluminum 0.531 in 0.281 in 10-24
SI Mounting Fixings MOLD-IN INSERT, BLIND, BRASS 267In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Leaded Brass 0.25 in 0.219 in 6-32
SI Mounting Fixings MOLD-IN INSERT, BLIND, BRASS 770In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Leaded Brass 11.13 mm 4.78 mm M3
SI Mounting Fixings MOLD-IN INSERT, BLIND, BRASS 2,929In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Leaded Brass 6.35 mm 6.35 mm M4
SI Mounting Fixings INTERNAL-THRD SPACR KNRL ALUM 750In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Aluminum 6 mm 6.35 mm M4