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 (RON) 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, BRASS 3.43X3.86 M3 THREAD ULTRASONIC HEAT STAKING DIAGONAL
Datasheet
10.917In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Brass 4.01 mm 3.43 mm M3
SI Mounting Fixings HI-TORQUE INSERT, BRASS 3.18X3.07 M2 THREAD ULTRASONIC HEAT STAKING DIAGONAL
Datasheet
12.261In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Brass 3.23 mm 3.18 mm M2
SI Mounting Fixings HI-TORQUE INSERT, STAINLESS
Datasheet
12.780In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Stainless Steel 5.67 mm 8.15 mm 6.17 mm M4
SI Mounting Fixings HI-TORQUE INSERT, BRASS
Datasheet
20.311In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Brass 5.67 mm 8.15 mm 7.14 mm M4
SI Mounting Fixings ULTRASONIC INSERT, BRASS
Datasheet
9.911In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Brass 6.78 mm 5.72 mm 7.54 mm M5
SI Mounting Fixings HI-TORQUE INSERT, STAINLESS
Datasheet
5.500In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Stainless Steel 0.316 in 0.5 in 0.342 in 1/4-20
SI Mounting Fixings ULTRASONIC INSERT, STAINLESS
Datasheet
10.450In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Stainless Steel 0.185 in 0.25 in 0.219 in 6-32
SI Mounting Fixings HI-TORQUE INSERT, BRASS
Datasheet
51.591In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Brass 4.01 mm 5.74 mm 4.55 mm M3


SI Mounting Fixings ULTRASONIC INSERT, BRASS
Datasheet
50.118In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Brass 3.89 mm 3.43 mm 4.37 mm M3
SI Mounting Fixings HI-TORQUE INSERT, BRASS
Datasheet
14.362In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Brass 0.223 in 0.321 in 0.243 in 8-32
SI Mounting Fixings HI-TORQUE INSERT, BRASS
Datasheet
10.024In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Brass 6.43 mm 9.53 mm 7.92 mm M5
SI Mounting Fixings HI-TORQUE INSERT, STAINLESS STEEL 3.18X3.07 M2 THREAD ULTRASONIC HEAT STAKING DIAGONAL
Datasheet
11.231In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Stainless Steel 3.23 mm 3.18 mm 3.73 mm M2
SI Mounting Fixings HI-TORQUE INSERT, STAINLESS
Datasheet
11.531In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Stainless Steel 4.01 mm 5.74 mm 4.55 mm M2.5
SI Mounting Fixings HI-TORQUE INSERT, STAINLESS
Datasheet
9.363In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Stainless Steel 8.03 mm 12.7 mm 8.69 mm M6
SI Mounting Fixings ULTRASONIC INSERT, BRASS
Datasheet
21.883In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Brass 3.89 mm 3.43 mm 4.37 mm M2.5
SI Mounting Fixings HI-TORQUE INSERT, BRASS
Datasheet
36.012In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Brass 4.01 mm 5.74 mm 4.55 mm M2.5
SI Mounting Fixings HI-TORQUE INSERT, STAINLESS
Datasheet
14.010In Stock
34.000On Order
Min.: 1
Mult.: 1

Inserts Threaded Insert Stainless Steel 4.01 mm 5.74 mm 4.55 mm M3
SI Mounting Fixings HI-TORQUE INSERT, STAINLESS
Datasheet
9.500In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Stainless Steel 6.43 mm 9.52 mm 6.93 mm M5
SI Mounting Fixings ISB-M3 DBL ENDED
Datasheet
34.033In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Brass 3.99 mm 5.74 mm 4.62 mm M3
SI Mounting Fixings HI-TORQUE INSERT, STAINLESS
Datasheet
10.820In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Stainless Steel 3.23 mm 4 mm 3.73 mm M2
SI Mounting Fixings ULTRASONIC INSERT, BRASS
Datasheet
1.362In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Brass 0.199 in 0.15 in 0.219 in 6-32
SI Mounting Fixings HI-TORQUE INSERT, BRASS
Datasheet
9.629In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Brass 0.158 in 0.226 in 0.179 in 4-40
SI Mounting Fixings HI-TORQUE INSERT, BRASS
Datasheet
10.453In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Brass 0.189 in 0.281 in 0.21 in 6-32
SI Mounting Fixings HI-TORQUE INSERT, STAINLESS
Datasheet
1.184In Stock
Min.: 1
Mult.: 1

Inserts Threaded Insert Stainless Steel 0.253 in 0.375 in 0.273 in 10-32
SI Mounting Fixings HI-TORQUE INSERT, BRASS
Datasheet
4.030In Stock
10.000Expected 8/24/2026
Min.: 1
Mult.: 1

Inserts Threaded Insert Brass 4.01 mm 5.74 mm 5.54 mm M3