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 HI-TORQUE INSERT, BRASS IUTFB-M4 SI 1: ¥99.7 29,191In Stock 11,000Expected 1/4/2027	Mfr. Part # IUTFB-M4 Mouser Part # 153-IUTFB-M4	SI	Mounting Hardware HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	29,191In Stock 11,000Expected 1/4/2027	¥99.7 ¥71.3 ¥57 ¥51.3 View ¥47.7 ¥46.3 ¥43.7 ¥42.7 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	5.67 mm	8.15 mm	7.14 mm	M4
Mounting Hardware HI-TORQUE INSERT, STAINLESS IUTC-M3 SI 1: ¥141.2 37,097In Stock	Mfr. Part # IUTC-M3 Mouser Part # 153-IUTC-M3	SI	Mounting Hardware HI-TORQUE INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	37,097In Stock	¥141.2 ¥100.7 ¥80.6 ¥72.6 View ¥67.3 ¥65.4 ¥61.8 ¥60.5 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	4.01 mm	5.74 mm	4.55 mm	M3
Mounting Hardware HI-TORQUE INSERT, STAINLESS STEEL 4.70X5.51 M4 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTC-M4-470 SI 1: ¥182.7 3,711In Stock 10,000Expected 11/17/2026	Mfr. Part # IUTC-M4-470 Mouser Part # 153-IUTC-M4-470	SI	Mounting Hardware HI-TORQUE INSERT, STAINLESS STEEL 4.70X5.51 M4 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	3,711In Stock 10,000Expected 11/17/2026	¥182.7 ¥137.4 ¥107 ¥100.8 View ¥98.7 ¥95.3 ¥92 ¥88.7 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	5.67 mm	4.7 mm	6.17 mm	M4
Mounting Hardware HI-TORQUE INSERT, STAINLESS IUTC-M5 SI 1: ¥154.5 6,901In Stock	Mfr. Part # IUTC-M5 Mouser Part # 153-IUTC-M5	SI	Mounting Hardware HI-TORQUE INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	6,901In Stock	¥154.5 ¥115.4 ¥89.9 ¥84.7 View ¥82.9 ¥80.1 ¥77.2 ¥74.6 ¥73.4	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	6.43 mm	9.52 mm	6.93 mm	M5
Mounting Hardware ULTRASONIC INSERT, BRASS IUB-M2.5-2 SI 1: ¥81.4 9,076In Stock	Mfr. Part # IUB-M2.5-2 Mouser Part # 153-IUB-M2.5-2	SI	Mounting Hardware ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	9,076In Stock	¥81.4 ¥57.1 ¥45.7 ¥41.2 View ¥37.7 ¥37 ¥34.9 ¥34.2 ¥33.1	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	3.58 mm	5.56 mm	4.37 mm	M2.5
Mounting Hardware ULTRASONIC INSERT, BRASS IUB-832-2 SI 1: ¥54.8 9,721In Stock	Mfr. Part # IUB-832-2 Mouser Part # 153-IUB-832-2	SI	Mounting Hardware ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	9,721In Stock	¥54.8 ¥38.5 ¥30.9 ¥27.9 View ¥25.2 ¥24.9 ¥23.6 ¥23.1 ¥22.3	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.208 in	0.312 in	0.25 in	8-32
Mounting Hardware HI-TORQUE INSERT, BRASS IUTB-632 SI 1: ¥56.5 9,510In Stock	Mfr. Part # IUTB-632 Mouser Part # 153-IUTB-632	SI	Mounting Hardware HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	9,510In Stock	¥56.5 ¥39.7 ¥31.7 ¥28.6 View ¥25.9 ¥25.7 ¥24.3 ¥23.8 ¥22.9	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.189 in	0.281 in	0.21 in	6-32
Mounting Hardware ULTRASONIC INSERT, STAINLESS IUC-632-1 SI 1: ¥104.6 119In Stock	Mfr. Part # IUC-632-1 Mouser Part # 153-IUC-632-1	SI	Mounting Hardware ULTRASONIC INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	119In Stock	¥104.6 ¥74.4 ¥59.6 ¥53.7 View ¥49.8 ¥48.5 ¥45.7 ¥44.7 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	0.199 in	0.15 in	0.219 in	6-32
Mounting Hardware ULTRASONIC INSERT, ALUM IUA-440-1 SI 1: ¥43.2 1,426In Stock	Mfr. Part # IUA-440-1 Mouser Part # 153-IUA-440-1	SI	Mounting Hardware ULTRASONIC INSERT, ALUM Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	1,426In Stock	¥43.2 ¥31.2 ¥25.1 ¥22.6 View ¥20.9 ¥20.3 ¥19.1 ¥18.8 ¥18.1	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	0.153 in	0.135 in	0.172 in	4-40
Mounting Hardware ULTRASONIC INSERT, BRASS IUB-632-2 SI 1: ¥44.8 7,377In Stock	Mfr. Part # IUB-632-2 Mouser Part # 153-IUB-632-2	SI	Mounting Hardware ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	7,377In Stock	¥44.8 ¥31.7 ¥25.4 ¥23.9 View ¥20.3 ¥19.3 ¥18.9 ¥18.3	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.185 in	0.25 in	0.219 in	6-32
Mounting Hardware TAPERED THRU THREADED INSERT M2X0.4 STAINLESS STEEL IUC-M2-1 SI 1: ¥73.1 1,681In Stock	Mfr. Part # IUC-M2-1 Mouser Part # 153-IUC-M2-1	SI	Mounting Hardware TAPERED THRU THREADED INSERT M2X0.4 STAINLESS STEEL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	1,681In Stock	¥73.1 ¥51.8 ¥41.5 ¥37.4 View ¥34.7 ¥33.7 ¥31.7 ¥31.1 ¥30.1	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	3 mm	2.92 mm		M2
Mounting Hardware HI-TORQUE INSERT, ALUMINUM 4.70X5.51 M4 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTA-M4-470 SI 1: ¥63.1 828In Stock	Mfr. Part # IUTA-M4-470 Mouser Part # 153-IUTA-M4-470	SI	Mounting Hardware HI-TORQUE INSERT, ALUMINUM 4.70X5.51 M4 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	828In Stock	¥63.1 ¥44.2 ¥35.4 ¥33.4 View ¥28.2 ¥27.1 ¥26.4 ¥25.6	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	5.67 mm	4.7 mm		M4
Mounting Hardware HI-TORQUE INSERT, BRASS IUTB-032 SI 1: ¥86.4 483In Stock	Mfr. Part # IUTB-032 Mouser Part # 153-IUTB-032	SI	Mounting Hardware HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	483In Stock	¥86.4 ¥60.5 ¥48.5 ¥45.7 View ¥38.7 ¥37 ¥36.2 ¥35	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.253 in	0.375 in	0.273 in	10-32
Mounting Hardware HI-TORQUE INSERT, BRASS .135X.152 4-40 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTB-440-135 SI 1: ¥49.8 6,098In Stock	Mfr. Part # IUTB-440-135 Mouser Part # 153-IUTB-440-135	SI	Mounting Hardware HI-TORQUE INSERT, BRASS .135X.152 4-40 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	6,098In Stock	¥49.8 ¥34.9 ¥27.9 ¥26.2 View ¥22.1 ¥21.3 ¥20.8 ¥20.1	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.158 in	0.135 in		4-40
Mounting Hardware ULTRASONIC INSERT, BRASS IUB-0420-1 SI 1: ¥91.4 600In Stock	Mfr. Part # IUB-0420-1 Mouser Part # 153-IUB-0420-1	SI	Mounting Hardware ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	600In Stock	¥91.4 ¥64.9 ¥52 ¥46.8 View ¥43.5 ¥42.4 ¥39.9 ¥39 ¥37.7	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.349 in	0.3 in	0.375 in	1/4-20
Mounting Hardware ULTRASONIC INSERT, BRASS IUB-832-1 SI 1: ¥44.8 2,521In Stock	Mfr. Part # IUB-832-1 Mouser Part # 153-IUB-832-1	SI	Mounting Hardware ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	2,521In Stock	¥44.8 ¥32.4 ¥25.9 ¥23.3 View ¥21.6 ¥21.1 ¥19.8 ¥19.4 ¥18.8	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.226 in	0.185 in	0.25 in	8-32
Mounting Hardware ULTRASONIC INSERT, BRASS IUB-M5-1 SI 1: ¥71.4 6,831In Stock	Mfr. Part # IUB-M5-1 Mouser Part # 153-IUB-M5-1	SI	Mounting Hardware ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	6,831In Stock	¥71.4 ¥51.5 ¥41.2 ¥37 View ¥34.4 ¥33.4 ¥31.6 ¥30.9 ¥29.7	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	6.78 mm	5.72 mm	7.54 mm	M5
Mounting Hardware ULTRASONIC INSERT, BRASS IUBB-M5-1 SI 1: ¥71.4 682In Stock	Mfr. Part # IUBB-M5-1 Mouser Part # 153-IUBB-M5-1	SI	Mounting Hardware ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	682In Stock	¥71.4 ¥50 ¥40 ¥37.7 View ¥31.9 ¥30.6 ¥29.9 ¥28.9	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	7.7 mm	6.71 mm	8.33 mm	M5
Mounting Hardware HI-TORQUE INSERT, BRASS 5.72X6.27 M5 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTB-M5-572 SI 1: ¥93 311In Stock 10,000Expected 10/28/2026	Mfr. Part # IUTB-M5-572 Mouser Part # 153-IUTB-M5-572	SI	Mounting Hardware HI-TORQUE INSERT, BRASS 5.72X6.27 M5 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	311In Stock 10,000Expected 10/28/2026	¥93 ¥65.9 ¥52.8 ¥47.5 View ¥44.2 ¥42.9 ¥40.5 ¥39.5 ¥38.2	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	6.43 mm	5.72 mm		M5
Mounting Hardware HI-TORQUE INSERT, BRASS IUTB-440 SI 1: ¥54.8 8,415In Stock	Mfr. Part # IUTB-440 Mouser Part # 153-IUTB-440	SI	Mounting Hardware HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	8,415In Stock	¥54.8 ¥37.9 ¥30.4 ¥28.2 View ¥23.8 ¥23.1 ¥22.6 ¥21.9	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.158 in	0.226 in	0.179 in	4-40
Mounting Hardware HI-TORQUE INSERT, STAINLESS IUTC-032 SI 1: ¥161.1 1,183In Stock	Mfr. Part # IUTC-032 Mouser Part # 153-IUTC-032	SI	Mounting Hardware HI-TORQUE INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	1,183In Stock	¥161.1 ¥119.9 ¥94.5 ¥80.2 View ¥77.4 ¥76.2	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	0.253 in	0.375 in	0.273 in	10-32
Mounting Hardware HI-TORQUE INSERT, BRASS IUTFB-832 SI 1: ¥98 89In Stock	Mfr. Part # IUTFB-832 Mouser Part # 153-IUTFB-832	SI	Mounting Hardware HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	89In Stock	¥98 ¥70.1 ¥56.1 ¥50.5 View ¥46.8 ¥45.7 ¥43 ¥42 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.223 in	0.321 in	0.281 in	8-32	Bulk
Mounting Hardware ULTRASONIC INSERT, STAINLESS IUC-M6-1 SI 1: ¥176.1 1,780In Stock	Mfr. Part # IUC-M6-1 Mouser Part # 153-IUC-M6-1	SI	Mounting Hardware ULTRASONIC INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	1,780In Stock	¥176.1 ¥131.9 ¥102.6 ¥96.8 View ¥94.7 ¥91.5 ¥88.4 ¥85.2 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	8.86 mm	7.62 mm	9.52 mm	M6
Mounting Hardware ULTRASONIC INSERT, BRASS IUB-256-1 SI 1: ¥44.8 990In Stock	Mfr. Part # IUB-256-1 Mouser Part # 153-IUB-256-1	SI	Mounting Hardware ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	990In Stock	¥44.8 ¥32.6 ¥26.1 ¥23.4 View ¥21.8 ¥21.1 ¥19.9 ¥19.4 ¥18.8	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.118 in	0.115 in	0.141 in	2-56
Mounting Hardware HI-TORQUE INSERT, ALUMINUM 5.72X6.27 M5 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTA-M5-572 SI 1: ¥84.7 973In Stock	Mfr. Part # IUTA-M5-572 Mouser Part # 153-IUTA-M5-572	SI	Mounting Hardware HI-TORQUE INSERT, ALUMINUM 5.72X6.27 M5 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	973In Stock	¥84.7 ¥60.8 ¥48.7 ¥43.9 View ¥40.7 ¥39.5 ¥37.4 ¥36.5 ¥35.2	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	6.43 mm	5.72 mm		M5