Mounting Hardware – Mouser Japan

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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.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (JPY) Filter the results in the table by unit price based on your quantity.	Qty.	Product	Type	Material	Mounting Hole Size	Length	Outside Diameter	Thread Size	Packaging
Mounting Hardware ULTRASONIC INSERT, BRASS IUB-032-1 SI 1: ¥66.4 33In Stock 10,000Expected 1/29/2027	Mfr. Part # IUB-032-1 Mouser Part # 153-IUB-032-1	SI	Mounting Hardware ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	33In Stock 10,000Expected 1/29/2027	¥66.4 ¥48.2 ¥38.5 ¥34.7 View ¥32.2 ¥31.2 ¥29.6 ¥28.9 ¥27.9	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.267 in	0.225 in	0.297 in	10-32
Mounting Hardware ULTRASONIC INSERT, BRASS IUB-M4-1 SI 1: ¥46.5 2,661In Stock 20,000On Order	Mfr. Part # IUB-M4-1 Mouser Part # 153-IUB-M4-1	SI	Mounting Hardware ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	2,661In Stock 20,000On Order On Order Ship Dates Mfr. #: IUB-M4-1 Stock: 2,661 Can Ship Immediately On Order: 10,000 Expected 2/8/2027 10,000 Expected 2/26/2027 Factory Lead-Time: 17 Weeks	¥46.5 ¥33.4 ¥26.7 ¥24.1 View ¥22.3 ¥21.8 ¥20.4 ¥19.9 ¥19.3	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	5.74 mm	4.7 mm	6.35 mm	M4
Mounting Hardware ULTRASONIC INSERT, BRASS IUBB-M3-1 SI 1: ¥61.5 8,373In Stock	Mfr. Part # IUBB-M3-1 Mouser Part # 153-IUBB-M3-1	SI	Mounting Hardware ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	8,373In Stock	¥61.5 ¥43.7 ¥35 ¥32.9 View ¥27.9 ¥26.7 ¥26.1 ¥25.2	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	5.05 mm	3.81 mm	5.56 mm	M3
Mounting Hardware ULTRASONIC INSERT, STAINLESS IUC-032-1 SI 1: ¥137.9 943In Stock	Mfr. Part # IUC-032-1 Mouser Part # 153-IUC-032-1	SI	Mounting Hardware ULTRASONIC INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	943In Stock	¥137.9 ¥97.8 ¥78.4 ¥73.7 View ¥62.6 ¥60 ¥58.6 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	0.267 in	0.225 in	0.297 in	10-32
Mounting Hardware HI-TORQUE INSERT IUTA-M2 SI 1: ¥53.2 7,220In Stock	Mfr. Part # IUTA-M2 Mouser Part # 153-IUTA-M2	SI	Mounting Hardware HI-TORQUE INSERT Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	7,220In Stock	¥53.2 ¥36.7 ¥29.4 ¥27.6 View ¥23.4 ¥22.4 ¥21.9 ¥21.1	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	3.23 mm	4 mm	3.73 mm	M2
Mounting Hardware HI-TORQUE INSERT, ALUMINUM 3.43X3.86 M3 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTA-M3-343 SI 1: ¥51.5 360In Stock 10,000Expected 10/30/2026	Mfr. Part # IUTA-M3-343 Mouser Part # 153-IUTA-M3-343	SI	Mounting Hardware HI-TORQUE INSERT, ALUMINUM 3.43X3.86 M3 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	360In Stock 10,000Expected 10/30/2026	¥51.5 ¥35.5 ¥28.4 ¥26.7 View ¥22.6 ¥21.6 ¥21.3 ¥20.4	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	4.01 mm	3.43 mm		M3
Mounting Hardware HI-TORQUE INSERT, BRASS IUTB-256 SI 1: ¥69.8 252In Stock	Mfr. Part # IUTB-256 Mouser Part # 153-IUTB-256	SI	Mounting Hardware HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	252In Stock	¥69.8 ¥50.2 ¥40 ¥36 View ¥33.6 ¥32.6 ¥30.7 ¥30.1 ¥29.1	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.127 in	0.157 in	0.147 in	2-56
Mounting Hardware HI-TORQUE INSERT, BRASS IUTFB-M2 SI 1: ¥79.7 7,644In Stock 10,000Expected 2/12/2027	Mfr. Part # IUTFB-M2 Mouser Part # 153-IUTFB-M2	SI	Mounting Hardware HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	7,644In Stock 10,000Expected 2/12/2027	¥79.7 ¥57.3 ¥45.8 ¥41.4 View ¥38.4 ¥37.2 ¥35.2 ¥34.4 ¥33.2	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	3.23 mm	3.99 mm	4.75 mm	M2	Bulk
Mounting Hardware ULTRASONIC INSERT, BRASS IUB-0616-2 SI 1: ¥289 925In Stock	Mfr. Part # IUB-0616-2 Mouser Part # 153-IUB-0616-2	SI	Mounting Hardware ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	925In Stock	¥289 ¥215.9 ¥169.4 ¥158.1 View ¥154.6 ¥149.5 ¥144.3 ¥139.2 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.488 in	0.625 in	0.563 in	3/8-16
Mounting Hardware ULTRASONIC INSERT, BRASS IUB-0616-1 SI 1: ¥295.7 919In Stock	Mfr. Part # IUB-0616-1 Mouser Part # 153-IUB-0616-1	SI	Mounting Hardware ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	919In Stock	¥295.7 ¥220.9 ¥172.7 ¥161 View ¥157.5 ¥152.1 ¥147 ¥141.7 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.523 in	0.375 in	0.563 in	3/8-16
Mounting Hardware ULTRASONIC INSERT, STAINLESS IUC-M8-2 SI 1: ¥433.5 1,160In Stock	Mfr. Part # IUC-M8-2 Mouser Part # 153-IUC-M8-2	SI	Mounting Hardware ULTRASONIC INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	1,160In Stock	¥433.5 ¥323.9 ¥252.5 ¥235.9 View ¥230.9 ¥222.6 ¥215.9 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	10.19 mm	14.27 mm	11.91 mm	M8
Mounting Hardware HI-TORQUE INSERT, STAINLESS IUTC-024 SI 1: ¥181 1,487In Stock	Mfr. Part # IUTC-024 Mouser Part # 153-IUTC-024	SI	Mounting Hardware HI-TORQUE INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	1,487In Stock	¥181 ¥134.4 ¥104.6 ¥98.7 View ¥96.3 ¥93 ¥89.9 ¥86.7 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	0.253 in	0.375 in	0.273 in	10-24
Mounting Hardware ULTRASONIC INSERT, STAINLESS IUC-0518-1 SI 1: ¥428.5 915In Stock	Mfr. Part # IUC-0518-1 Mouser Part # 153-IUC-0518-1	SI	Mounting Hardware ULTRASONIC INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	915In Stock	¥428.5 ¥320.6 ¥249.2 ¥232.5 View ¥229.2 ¥220.9 ¥212.6 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	0.431 in	0.335 in	0.469 in	5/16-18
Mounting Hardware HI-TORQUE INSERT, STAINLESS IUTC-0616 SI 1: ¥295.7 1,644In Stock	Mfr. Part # IUTC-0616 Mouser Part # 153-IUTC-0616	SI	Mounting Hardware HI-TORQUE INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	1,644In Stock	¥295.7 ¥220.9 ¥172.7 ¥161.6 View ¥158.1 ¥152.8 ¥147.5 ¥142.2 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	0.468 in	0.5 in	0.509 in	3/8-16
Mounting Hardware HI-TORQUE INSERT, STAINLESS IUTC-632 SI 1: ¥131.2 8,305In Stock	Mfr. Part # IUTC-632 Mouser Part # 153-IUTC-632	SI	Mounting Hardware HI-TORQUE INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	8,305In Stock	¥131.2 ¥92.2 ¥73.9 ¥69.6 View ¥59 ¥56.5 ¥55.3 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	0.189 in	0.281 in	0.21 in	6-32
Mounting Hardware HI-TORQUE INSERT IUTA-M3 SI 1: ¥53.2 14,310In Stock 17,000Expected 12/21/2026	Mfr. Part # IUTA-M3 Mouser Part # 153-IUTA-M3	SI	Mounting Hardware HI-TORQUE INSERT Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	14,310In Stock 17,000Expected 12/21/2026	¥53.2 ¥38.2 ¥30.6 ¥27.6 View ¥25.6 ¥24.9 ¥23.4 ¥22.9 ¥22.1	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	4.01 mm	5.74 mm	4.55 mm	M3
Mounting Hardware HI-TORQUE INSERT, STAINLESS STEEL 5.72X6.27 M5 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTC-M5-572 SI 1: ¥147.8 9,405In Stock	Mfr. Part # IUTC-M5-572 Mouser Part # 153-IUTC-M5-572	SI	Mounting Hardware HI-TORQUE INSERT, STAINLESS STEEL 5.72X6.27 M5 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	9,405In Stock	¥147.8 ¥109.5 ¥86.2 ¥73.3 View ¥73.1 ¥70.6 ¥69.6	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	6.43 mm	5.72 mm	6.93 mm	M5
Mounting Hardware HI-TORQUE INSERT, STAINLESS STEEL 7.62X7.87 M6 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTC-M6-762 SI 1: ¥201 4,715In Stock	Mfr. Part # IUTC-M6-762 Mouser Part # 153-IUTC-M6-762	SI	Mounting Hardware HI-TORQUE INSERT, STAINLESS STEEL 7.62X7.87 M6 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	4,715In Stock	¥201 ¥149.2 ¥117.4 ¥99.7 View ¥96.2 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	8.03 mm	7.62 mm	8.69 mm	M6
Mounting Hardware ISB-M5 DBL ENDED NUT ISB-M5 SI 1: ¥134.5 1,130In Stock	Mfr. Part # ISB-M5 Mouser Part # 153-ISB-M5	SI	Mounting Hardware ISB-M5 DBL ENDED NUT Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	1,130In Stock	¥134.5 ¥100.3 ¥78.1 ¥73.6 View ¥72.1 ¥69.6 ¥67.3 ¥64.8 ¥63.8	Min.: 1 Mult.: 1	Screws & Fasteners	Nut, Double Ended	Brass	6.4 mm	9.52 mm	7.01 mm	M5
Mounting Hardware HI-TORQUE INSERT, ALUMINUM .225X.247 10-24 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTA-024-225 SI 1: ¥89.7 1,000In Stock	Mfr. Part # IUTA-024-225 Mouser Part # 153-IUTA-024-225	SI	Mounting Hardware HI-TORQUE INSERT, ALUMINUM .225X.247 10-24 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	1,000In Stock	¥89.7 ¥63.6 ¥51 ¥45.8 View ¥42.5 ¥41.4 ¥39 ¥38.2 ¥36.9	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	0.253 in	0.225 in	0.237 in	10-24
Mounting Hardware HI-TORQUE INSERT, ALUMINUM .150X.183 6-32 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTA-632-150 SI 1: ¥61.5 1,000In Stock	Mfr. Part # IUTA-632-150 Mouser Part # 153-IUTA-632-150	SI	Mounting Hardware HI-TORQUE INSERT, ALUMINUM .150X.183 6-32 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	1,000In Stock	¥61.5 ¥43.9 ¥35.2 ¥31.6 View ¥29.4 ¥28.6 ¥26.9 ¥26.4 ¥25.4	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	0.189 in	0.15 in		6-32
Mounting Hardware HI-TORQUE INSERT, ALUMINUM .185X.217 8-32 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTA-832-185 SI 1: ¥64.8 1,000In Stock	Mfr. Part # IUTA-832-185 Mouser Part # 153-IUTA-832-185	SI	Mounting Hardware HI-TORQUE INSERT, ALUMINUM .185X.217 8-32 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	1,000In Stock	¥64.8 ¥46.2 ¥37 ¥33.4 View ¥30.9 ¥30.1 ¥28.4 ¥27.7 ¥26.7	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	0.223 in	0.185 in		8-32
Mounting Hardware ISA-M4 DBL ENDED NUT ISA-M4 SI 1: ¥73.1 400In Stock	Mfr. Part # ISA-M4 Mouser Part # 153-ISA-M4	SI	Mounting Hardware ISA-M4 DBL ENDED NUT Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	400In Stock	¥73.1 ¥51.8 ¥41.5 ¥37.4 View ¥34.7 ¥33.7 ¥31.7 ¥31.1 ¥30.1	Min.: 1 Mult.: 1	Screws & Fasteners	Nut, Double Ended	Aluminum	5.62 mm	8.15 mm	6.22 mm	M4
Mounting Hardware ISB-0420 DBL ENDED NUT ISB-0420 SI 1: ¥151.2 776In Stock	Mfr. Part # ISB-0420 Mouser Part # 153-ISB-0420	SI	Mounting Hardware ISB-0420 DBL ENDED NUT Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	776In Stock	¥151.2 ¥107.3 ¥85.9 ¥77.4 View ¥71.8 ¥69.9 ¥65.8 ¥64.4 Quote	Min.: 1 Mult.: 1	Screws & Fasteners	Nut, Double Ended	Brass	0.315 in	0.5 in	0.338 in	1/4-20
Mounting Hardware ISB-256 DBL ENDED NUT ISB-256 SI 1: ¥71.4 987In Stock	Mfr. Part # ISB-256 Mouser Part # 153-ISB-256	SI	Mounting Hardware ISB-256 DBL ENDED NUT Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	987In Stock	¥71.4 ¥51.2 ¥41 ¥36.9 View ¥34.2 ¥33.4 ¥31.4 ¥30.7 ¥29.7	Min.: 1 Mult.: 1	Screws & Fasteners	Nut, Double Ended	Brass	0.126 in	0.157 in	0.151 in	2-56