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
Select Image Part # Mfr. Description Datasheet Availability Pricing (JPY) 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 Hardware HI-TORQUE INSERT, BRASS 7.62X7.87 M6 THREAD ULTRASONIC HEAT STAKING DIAGONAL 119In Stock
¥134.5
¥95.5
¥76.6
¥72.1
Min.: 1
Mult.: 1
Inserts Threaded Insert Brass 8.03 mm 7.62 mm M6
SI Mounting Hardware HI-TORQUE INSERT, BRASS 12.70X9.50 M8 THREAD ULTRASONIC HEAT STAKING DIAGONAL 2,826In Stock
¥161.1
¥114.4
¥93.8
¥79.6
Min.: 1
Mult.: 1
Inserts Threaded Insert Brass 9.6 mm 12.7 mm 10.31 mm M8
SI Mounting Hardware ULTRASONIC INSERT, BRASS 33In Stock
10,000Expected 1/29/2027
¥66.4
¥48.2
¥38.5
¥34.7
Min.: 1
Mult.: 1
Inserts Threaded Insert Brass 0.267 in 0.225 in 0.297 in 10-32
SI Mounting Hardware ULTRASONIC INSERT, BRASS 2,661In Stock
20,000On Order
¥46.5
¥33.4
¥26.7
¥24.1
Min.: 1
Mult.: 1
Inserts Threaded Insert Brass 5.74 mm 4.7 mm 6.35 mm M4
SI Mounting Hardware ULTRASONIC INSERT, BRASS 8,373In Stock
¥61.5
¥43.7
¥35
¥32.9
Min.: 1
Mult.: 1
Inserts Threaded Insert Brass 5.05 mm 3.81 mm 5.56 mm M3
SI Mounting Hardware ULTRASONIC INSERT, STAINLESS 943In Stock
¥137.9
¥97.8
¥78.4
¥73.7
Min.: 1
Mult.: 1
Inserts Threaded Insert Stainless Steel 0.267 in 0.225 in 0.297 in 10-32
SI Mounting Hardware HI-TORQUE INSERT 7,220In Stock
¥53.2
¥36.7
¥29.4
¥27.6
Min.: 1
Mult.: 1
Inserts Threaded Insert Aluminum 3.23 mm 4 mm 3.73 mm M2
SI Mounting Hardware HI-TORQUE INSERT, ALUMINUM 3.43X3.86 M3 THREAD ULTRASONIC HEAT STAKING DIAGONAL 360In Stock
10,000Expected 10/30/2026
¥51.5
¥35.5
¥28.4
¥26.7
Min.: 1
Mult.: 1
Inserts Threaded Insert Aluminum 4.01 mm 3.43 mm M3
SI Mounting Hardware HI-TORQUE INSERT, BRASS 252In Stock
¥69.8
¥50.2
¥40
¥36
Min.: 1
Mult.: 1
Inserts Threaded Insert Brass 0.127 in 0.157 in 0.147 in 2-56
SI Mounting Hardware HI-TORQUE INSERT, BRASS 7,544In Stock
10,000Expected 2/12/2027
¥79.7
¥57.3
¥45.8
¥41.4
Min.: 1
Mult.: 1
Inserts Threaded Insert Brass 3.23 mm 3.99 mm 4.75 mm M2 Bulk
SI Mounting Hardware ISC-440 DBL ENDED NUT 557In Stock
¥112.9
¥79.7
¥63.8
¥60.1
Min.: 1
Mult.: 1
Screws & Fasteners Nut, Double Ended Stainless Steel 0.157 in 0.226 in 0.182 in 4-40
SI Mounting Hardware ISC-M5 DBL ENDED NUT 65In Stock
¥181
¥135.4
¥105.3
¥99.3
Min.: 1
Mult.: 1
Screws & Fasteners Nut, Double Ended Stainless Steel 6.4 mm 9.52 mm 7.01 mm M5
SI Mounting Hardware ULTRASONIC INSERT, ALUMINUM 785In Stock
¥64.8
¥45.3
¥36.4
¥34.2
Min.: 1
Mult.: 1
Inserts Threaded Insert Aluminum 3.58 mm 5.56 mm 4.37 mm M2.5
SI Mounting Hardware ULTRASONIC INSERT, BRASS 898In Stock
10,000Expected 1/29/2027
¥94.7
¥68.3
¥54.6
¥49.2
Min.: 1
Mult.: 1
Inserts Threaded Insert Brass 8.86 mm 7.62 mm 9.52 mm M6
SI Mounting Hardware ULTRASONIC INSERT, STAINLESS 114In Stock
¥201
¥151
¥117.4
¥110.8
Min.: 1
Mult.: 1
Inserts Threaded Insert Stainless Steel 0.349 in 0.3 in 0.375 in 1/4-20
SI Mounting Hardware ULTRASONIC INSERT, STAINLESS 1,215In Stock
¥136.2
¥95.7
¥76.6
¥72.1
Min.: 1
Mult.: 1
Inserts Threaded Insert Stainless Steel 0.208 in 0.312 in 0.25 in 8-32
SI Mounting Hardware HI-TORQUE INSERT, ALUMINUM .300X.310 1/4-20 THREAD ULTRASONIC HEAT STAKING DIAGONAL 615In Stock
¥103
¥73.1
¥58.6
¥52.7
Min.: 1
Mult.: 1
Inserts Threaded Insert Aluminum 0.316 in 0.3 in 0.342 in 1/4-20

SI Mounting Hardware HI-TORQUE INSERT, BRASS 6,108In Stock
¥86.4
¥60.6
¥48.7
¥45.8
Min.: 1
Mult.: 1
Inserts Threaded Insert Brass 6.43 mm 9.52 mm 6.93 mm M5
SI Mounting Hardware HI-TORQUE INSERT, STAINLESS 4,655In Stock
5,250Expected 10/30/2026
¥122.9
¥86.5
¥69.3
¥65.3
Min.: 1
Mult.: 1
Inserts Threaded Insert Stainless Steel 4.81 mm 7.14 mm 5.33 mm M3.5
SI Mounting Hardware HI-TORQUE INSERT, BRASS 337In Stock
¥94.7
¥68.1
¥54.5
¥49
Min.: 1
Mult.: 1
Inserts Threaded Insert Brass 4.81 mm 7.14 mm 6.35 mm M3.5 Bulk
SI Mounting Hardware ULTRASONIC INSERT, ALUM 81In Stock
¥56.5
¥39.9
¥31.9
¥30.1
Min.: 1
Mult.: 1
Inserts Threaded Insert Aluminum 6.78 mm 5.72 mm 7.54 mm M5
SI Mounting Hardware ULTRASONIC INSERT, BRASS 744In Stock
10,000Expected 2/5/2027
¥103
¥73.4
¥58.8
¥52.8
Min.: 1
Mult.: 1
Inserts Threaded Insert Brass 0.246 in 0.375 in 0.297 in 10-32
SI Mounting Hardware ULTRASONIC INSERT, STAINLESS 344In Stock
¥103
¥73.1
¥58.6
¥55.1
Min.: 1
Mult.: 1
Inserts Threaded Insert Stainless Steel 4.7 mm 6.35 mm 5.56 mm M3
SI Mounting Hardware HI-TORQUE INSERT, ALUM 253In Stock
¥56.5
¥41
¥32.9
¥29.6
Min.: 1
Mult.: 1
Inserts Threaded Insert Aluminum 0.127 in 0.157 in 0.147 in 2-56
SI Mounting Hardware HI-TORQUE INSERT, ALUM 559In Stock
¥54.8
¥39
¥31.2
¥28.1
Min.: 1
Mult.: 1
Inserts Threaded Insert Aluminum 0.158 in 0.226 in 0.179 in 4-40