Ultrasonic/Heat Staking Inserts

SI (Standard Inserts) Ultrasonic/Heat Staking Inserts are hexagonal-shaped body inserts that provide rotational torque resistance and knurling provides torque out resistance. The heat staking inserts are installed by pressing the insert into the mounting hole with a thermal press to melt the plastic surrounding the insert. The SI® brand inserts employ press-in and heat/ultrasonic installation methods to provide strong, reusable, and permanent threads in plastic. These SI® inserts are available in brass, stainless steel, and aluminum. The applications include wearables, smartphones, handheld devices, automotive, aerospace and defense, medical, transportation, industrial, and recreational equipment.

Results: 268
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Description Datasheet Availability Pricing (IDR) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Product
Type
Material
Mounting Hole Size
Length
Outside Diameter
Thread Size
Packaging
SI Mounting Fixings HI-TORQUE INSERT, STAINLESS
Datasheet
2.700In Stock
5.250Expected 30/10/2026
Min.: 1
Mult.: 1

Inserts Threaded Insert Stainless Steel 4.81 mm 7.14 mm 5.33 mm M3.5
SI Mounting Fixings ISB-M5 DBL ENDED NUT
Datasheet
1.130In Stock
Min.: 1
Mult.: 1

Screws & Fasteners Nut, Double Ended Brass 6.4 mm 9.52 mm 7.01 mm M5
SI Mounting Fixings ISC-440 DBL ENDED NUT
Datasheet
557In Stock
Min.: 1
Mult.: 1

Screws & Fasteners Nut, Double Ended Stainless Steel 0.157 in 0.226 in 0.182 in 4-40
SI Mounting Fixings HI-TORQUE INSERT, ALUMINUM .225X.247 10-24 THREAD ULTRASONIC HEAT STAKING DIAGONAL
Datasheet
1.000In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Aluminum 0.253 in 0.225 in 0.237 in 10-24
SI Mounting Fixings HI-TORQUE INSERT, ALUMINUM .150X.183 6-32 THREAD ULTRASONIC HEAT STAKING DIAGONAL
Datasheet
1.000In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Aluminum 0.189 in 0.15 in 6-32
SI Mounting Fixings HI-TORQUE INSERT, ALUMINUM .185X.217 8-32 THREAD ULTRASONIC HEAT STAKING DIAGONAL
Datasheet
1.000In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Aluminum 0.223 in 0.185 in 8-32
SI Mounting Fixings ISA-M4 DBL ENDED NUT
Datasheet
400In Stock
Min.: 1
Mult.: 1

Screws & Fasteners Nut, Double Ended Aluminum 5.62 mm 8.15 mm 6.22 mm M4
SI Mounting Fixings ISB-0420 DBL ENDED NUT
Datasheet
776In Stock
Min.: 1
Mult.: 1

Screws & Fasteners Nut, Double Ended Brass 0.315 in 0.5 in 0.338 in 1/4-20
SI Mounting Fixings ISB-256 DBL ENDED NUT
Datasheet
987In Stock
Min.: 1
Mult.: 1

Screws & Fasteners Nut, Double Ended Brass 0.126 in 0.157 in 0.151 in 2-56
SI Mounting Fixings ISB-832 DBL ENDED NUT
Datasheet
749In Stock
Min.: 1
Mult.: 1

Screws & Fasteners Nut, Double Ended Brass 0.221 in 0.321 in 0.245 in 8-32
SI Mounting Fixings ISC-632 DBL ENDED NUT
Datasheet
62In Stock
Min.: 1
Mult.: 1

Screws & Fasteners Nut, Double Ended Stainless Steel 0.188 in 0.281 in 0.215 in 6-32
SI Mounting Fixings ULTRASONIC INSERT, ALUM
Datasheet
1.950In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Aluminum 0.246 in 0.375 in 0.297 in 10-24
SI Mounting Fixings ULTRASONIC INSERT, ALUM
Datasheet
990In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Aluminum 0.267 in 0.225 in 0.297 in 10-32
SI Mounting Fixings ULTRASONIC INSERT, ALUM
Datasheet
1.900In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Aluminum 0.246 in 0.375 in 0.297 in 10-32
SI Mounting Fixings ULTRASONIC INSERT, ALUM
Datasheet
1.787In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Aluminum 0.321 in 0.5 in 0.375 in 1/4-20
SI Mounting Fixings ULTRASONIC INSERT, ALUM
Datasheet
900In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Aluminum 0.349 in 0.3 in 0.375 in 1/4-28
SI Mounting Fixings ULTRASONIC INSERT, ALUM
Datasheet
147In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Aluminum 0.431 in 0.335 in 0.469 in 5/16-18
SI Mounting Fixings ULTRASONIC INSERT, ALUM
Datasheet
935In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Aluminum 0.401 in 0.562 in 0.469 in 5/16-18
SI Mounting Fixings ULTRASONIC INSERT, ALUM
Datasheet
980In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Aluminum 0.523 in 0.375 in 0.563 in 3/8-16
SI Mounting Fixings ULTRASONIC INSERT, ALUM
Datasheet
840In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Aluminum 0.208 in 0.312 in 0.25 in 8-32
SI Mounting Fixings ULTRASONIC INSERT, ALUM
Datasheet
938In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Aluminum 8.86 mm 7.62 mm 9.52 mm M6
SI Mounting Fixings ULTRASONIC INSERT, AL
Datasheet
340In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Aluminum 5.05 mm 3.81 mm 5.56 mm M3
SI Mounting Fixings ULTRASONIC INSERT, ALUM
Datasheet
1.900In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Aluminum 7.06 mm 11.1 mm 8.33 mm M5
SI Mounting Fixings ULTRASONIC INSERT, BRASS
Datasheet
405In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Brass 0.267 in 0.225 in 0.297 in 10-24
SI Mounting Fixings ULTRASONIC INSERT, BRASS
Datasheet
942In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Brass 0.321 in 0.5 in 0.375 in 1/4-20