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 The core pins are withdrawn when the mold is opened, leaving the inserts permanently encapsulated in the plastic section with only the threads exposed.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 (USD) 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 MOLD-IN INSERT,BLIND,STAINLESS 4,006In Stock
5,000Expected 2026/10/14
$0.97
$0.723
$0.569
$0.483
Min.: 1
Mult.: 1
Inserts Threaded Insert Stainless Steel 10.31 mm 6.35 mm M4
SI Mounting Fixings MOLD-IN INSERT,BLIND,STAINLESS 9,092In Stock
$1.11
$0.833
$0.648
$0.611
Min.: 1
Mult.: 1
Inserts Threaded Insert Stainless Steel 0.531 in 0.25 in 8-32
SI Mounting Fixings MOLD-IN INSERT,BLIND,STAINLESS 4,197In Stock
10,000Expected 2026/10/30
$0.94
$0.668
$0.535
$0.481
Min.: 1
Mult.: 1
Inserts Threaded Insert Stainless Steel 7.13 mm 4.78 mm M3
SI Mounting Fixings MOLD-IN INSERT, BRASS 8,027In Stock
$0.60
$0.423
$0.34
$0.319
Min.: 1
Mult.: 1
Inserts Threaded Insert Leaded Brass 7.13 mm 7.13 mm M5
SI Mounting Fixings MOLD-IN INSERT, BLIND, BRASS 4,993In Stock
$0.861
$0.638
$0.497
$0.422
Min.: 1
Mult.: 1
Inserts Threaded Insert Leaded Brass 0.719 in 0.344 in 1/4-20
SI Mounting Fixings MOLD-IN INSERT, ALUM 10,000In Stock
$0.44
$0.308
$0.247
$0.222
Min.: 1
Mult.: 1
Inserts Threaded Insert Aluminum 7.13 mm 7.13 mm M5
SI Mounting Fixings INTERNAL-THRD SPACR KBRL BRASS 19,865In Stock
$0.62
$0.438
$0.351
$0.316
Min.: 1
Mult.: 1
Inserts Threaded Insert Leaded Brass 3 mm 4.74 mm M3
SI Mounting Fixings MOLD-IN INSERT,BLIND,STAINLESS 9,908In Stock
$0.89
$0.659
$0.513
$0.484
Min.: 1
Mult.: 1
Inserts Threaded Insert Stainless Steel 0.406 in 0.219 in 6-32
SI Mounting Fixings MOLD-IN INSERT, BRASS 256In Stock
92On Order
$0.961
$0.721
$0.562
$0.529
Min.: 1
Mult.: 1
Inserts Threaded Insert Leaded Brass 0.125 in 0.109 in 0-80
SI Mounting Fixings MOLD-IN INSERT, STAINLESS 1,263In Stock
$0.68
$0.483
$0.387
$0.364
Min.: 1
Mult.: 1
Inserts Threaded Insert Stainless Steel 4.77 mm 4.77 mm M3
SI Mounting Fixings INTERNAL-THRD SPACR KNRL BRASS 997In Stock
$0.62
$0.443
$0.355
$0.319
Min.: 1
Mult.: 1
Inserts Threaded Insert Leaded Brass 3 mm 6.35 mm M4
SI Mounting Fixings MOLD-IN INSERT, BLIND, BRASS 931In Stock
$0.77
$0.544
$0.435
$0.411
Min.: 1
Mult.: 1
Inserts Threaded Insert Leaded Brass 13.48 mm 7.14 mm M5
SI Mounting Fixings MOLD-IN INSERT, ALUM 579In Stock
$0.32
$0.233
$0.186
$0.167
Min.: 1
Mult.: 1
Inserts Threaded Insert Aluminum 4.77 mm 4.77 mm M3
SI Mounting Fixings MOLD-IN INSERT, BLIND, BRASS 2,435In Stock
$0.461
$0.333
$0.266
$0.24
Min.: 1
Mult.: 1
Inserts Threaded Insert Leaded Brass 0.344 in 0.188 in 4-40
SI Mounting Fixings MOLD-IN INSERT, BRASS 807In Stock
$0.611
$0.428
$0.343
$0.323
Min.: 1
Mult.: 1
Inserts Threaded Insert Leaded Brass 6.35 mm 6.35 mm M4
SI Mounting Fixings MOLD-IN INSERT, BLIND, BRASS 1,282In Stock
$0.49
$0.348
$0.279
$0.251
Min.: 1
Mult.: 1
Inserts Threaded Insert Leaded Brass 0.344 in 0.219 in 6-32
SI Mounting Fixings INTERNAL THRD SPACER KNRL S/S 701In Stock
$0.861
$0.616
$0.493
$0.444
Min.: 1
Mult.: 1
Inserts Threaded Insert Stainless Steel 4 mm 4.74 mm M3
SI Mounting Fixings MOLD-IN INSERT, BLIND, BRASS 1,997In Stock
$0.50
$0.355
$0.285
$0.267
Min.: 1
Mult.: 1
Inserts Threaded Insert Leaded Brass 8.73 mm 6.35 mm M4
SI Mounting Fixings INTERNAL-THRD SPACR KNRL BRASS 1,544In Stock
$0.65
$0.462
$0.37
$0.333
Min.: 1
Mult.: 1
Inserts Threaded Insert Leaded Brass 4 mm 6.35 mm M4
SI Mounting Fixings INTERNAL-THRD SPACR KNRL BRASS 9,125In Stock
$0.88
$0.656
$0.511
$0.481
Min.: 1
Mult.: 1
Inserts Threaded Insert Leaded Brass 0.75 in 0.25 in 8-32
SI Mounting Fixings MOLD-IN INSERT,BLIND,STAINLESS 10,567In Stock
$0.87
$0.647
$0.504
$0.475
Min.: 1
Mult.: 1
Inserts Threaded Insert Stainless Steel 0.344 in 0.219 in 6-32
SI Mounting Fixings MOLD-IN INSERT, BLIND,ALUM 780In Stock
$0.28
$0.195
$0.156
$0.147
Min.: 1
Mult.: 1
Inserts Threaded Insert Aluminum 5.21 mm 4.78 mm M3
SI Mounting Fixings MOLD-IN INSERT, BLIND, BRASS 1,294In Stock
$0.45
$0.316
$0.254
$0.238
Min.: 1
Mult.: 1
Inserts Threaded Insert Leaded Brass 7.13 mm 4.78 mm M3
SI Mounting Fixings MOLD-IN INSERT,BLIND,STAINLESS 100In Stock
$0.861
$0.613
$0.491
$0.442
Min.: 1
Mult.: 1
Inserts Threaded Insert Stainless Steel 0.156 in 0.156 in 2-56
SI Mounting Fixings MOLD-IN INSERT, STAINLESS 13In Stock
$0.87
$0.621
$0.497
$0.448
Min.: 1
Mult.: 1
Inserts Threaded Insert Stainless Steel 6.35 mm 6.35 mm M4