Mounting Hardware – Mouser Chile

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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 (CLP) 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
Mounting Hardware ULTRASONIC INSERT, BRASS IUB-M3-2 SI 1: $296 187.378In Stock 12.674On Order	Mfr. Part # IUB-M3-2 Mouser Part # 153-IUB-M3-2	SI	Mounting Hardware ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	187.378In Stock 12.674On Order	$296 $203 $163 $153 View $129 $124 $121 $117	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	3.58 mm	5.56 mm	4.37 mm	M3
Mounting Hardware ULTRASONIC INSERT, STAINLESS IUC-632-2 SI 1: $752 6.833In Stock	Mfr. Part # IUC-632-2 Mouser Part # 153-IUC-632-2	SI	Mounting Hardware ULTRASONIC INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	6.833In Stock	$752 $529 $424 $382 View $353 $344 $324 $317 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	0.185 in	0.25 in	0.219 in	6-32
Mounting Hardware HI-TORQUE INSERT, BRASS IUTB-M3 SI 1: $422 60.029In Stock	Mfr. Part # IUTB-M3 Mouser Part # 153-IUTB-M3	SI	Mounting Hardware HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	60.029In Stock	$422 $300 $239 $215 View $201 $195 $183 $180 $173	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	4.01 mm	5.74 mm	4.55 mm	M3
Mounting Hardware HI-TORQUE INSERT, STAINLESS IUTC-0420 SI 1: $1.379 3.764In Stock	Mfr. Part # IUTC-0420 Mouser Part # 153-IUTC-0420	SI	Mounting Hardware HI-TORQUE INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	3.764In Stock	$1.379 $1.023 $805 $684 View $660 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	0.316 in	0.5 in	0.342 in	1/4-20
Mounting Hardware HI-TORQUE INSERT, STAINLESS STEEL 3.43X3.86 M3 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTC-M3-343 SI 1: $923 8.486In Stock	Mfr. Part # IUTC-M3-343 Mouser Part # 153-IUTC-M3-343	SI	Mounting Hardware HI-TORQUE INSERT, STAINLESS STEEL 3.43X3.86 M3 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	8.486In Stock	$923 $655 $525 $494 View $419 $401 $393 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	4.01 mm	3.43 mm	4.55 mm	M3
Mounting Hardware HI-TORQUE INSERT, STAINLESS IUTC-632 SI 1: $900 8.105In 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	8.105In Stock	$900 $632 $507 $477 View $404 $387 $379 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, BRASS 3.43X3.86 M3 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTB-M3-343 SI 1: $467 14.444In Stock	Mfr. Part # IUTB-M3-343 Mouser Part # 153-IUTB-M3-343	SI	Mounting Hardware HI-TORQUE INSERT, BRASS 3.43X3.86 M3 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	14.444In Stock	$467 $332 $265 $238 View $221 $215 $203 $198 $191	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	4.01 mm	3.43 mm		M3
Mounting Hardware HI-TORQUE INSERT, BRASS IUTB-832 SI 1: $422 13.080In Stock	Mfr. Part # IUTB-832 Mouser Part # 153-IUTB-832	SI	Mounting Hardware HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	13.080In Stock	$422 $296 $237 $223 View $189 $181 $177 $171	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.223 in	0.321 in	0.243 in	8-32
Mounting Hardware ULTRASONIC,INSERT,STAINLESS IUCC-M5-2 SI 1: $1.139 9.496In Stock	Mfr. Part # IUCC-M5-2 Mouser Part # 153-IUCC-M5-2	SI	Mounting Hardware ULTRASONIC,INSERT,STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	9.496In Stock	$1.139 $846 $660 $621 View $607 $587 $566 $546 $538	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	7.06 mm	11.1 mm	8.33 mm	M5
Mounting Hardware HI-TORQUE INSERT, STAINLESS STEEL 3.18X3.07 M2 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTC-M2-318 SI 1: $615 9.923In Stock	Mfr. Part # IUTC-M2-318 Mouser Part # 153-IUTC-M2-318	SI	Mounting Hardware HI-TORQUE INSERT, STAINLESS STEEL 3.18X3.07 M2 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	9.923In Stock	$615 $434 $347 $312 View $289 $281 $265 $260 $251	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	3.23 mm	3.18 mm	3.73 mm	M2
Mounting Hardware HI-TORQUE INSERT, BRASS 3.18X3.07 M2 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTB-M2-318 SI 1: $535 9.561In Stock	Mfr. Part # IUTB-M2-318 Mouser Part # 153-IUTB-M2-318	SI	Mounting Hardware HI-TORQUE INSERT, BRASS 3.18X3.07 M2 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	9.561In Stock	$535 $379 $304 $273 View $247 $246 $232 $227 $219	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	3.23 mm	3.18 mm		M2
Mounting Hardware HI-TORQUE INSERT, STAINLESS IUTC-M2.5 SI 1: $980 10.316In Stock	Mfr. Part # IUTC-M2.5 Mouser Part # 153-IUTC-M2.5	SI	Mounting Hardware HI-TORQUE INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	10.316In Stock	$980 $695 $557 $501 View $465 $451 $426 $416 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	4.01 mm	5.74 mm	4.55 mm	M2.5
Mounting Hardware ULTRASONIC INSERT, STAINLESS IUC-M2.5-1 SI 1: $797 10.254In Stock	Mfr. Part # IUC-M2.5-1 Mouser Part # 153-IUC-M2.5-1	SI	Mounting Hardware ULTRASONIC INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	10.254In Stock	$797 $561 $449 $404 View $375 $365 $343 $336 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	3.89 mm	3.43 mm	4.37 mm	M2.5
Mounting Hardware HI-TORQUE INSERT, STAINLESS IUTC-M6 SI 1: $1.504 9.053In Stock	Mfr. Part # IUTC-M6 Mouser Part # 153-IUTC-M6	SI	Mounting Hardware HI-TORQUE INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	9.053In Stock	$1.504 $1.114 $868 $818 View $799 $772 $746 $719 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	8.03 mm	12.7 mm	8.69 mm	M6
Mounting Hardware HI-TORQUE INSERT, BRASS IUTFB-M5 SI 1: $1.071 9.769In Stock	Mfr. Part # IUTFB-M5 Mouser Part # 153-IUTFB-M5	SI	Mounting Hardware HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	9.769In Stock	$1.071 $754 $604 $545 View $505 $490 $463 $452 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	6.43 mm	9.53 mm	7.92 mm	M5
Mounting Hardware ULTRASONIC INSERT, BRASS IUB-M5-2 SI 1: $729 9.560In Stock	Mfr. Part # IUB-M5-2 Mouser Part # 153-IUB-M5-2	SI	Mounting Hardware ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	9.560In Stock	$729 $516 $414 $373 View $345 $335 $316 $309 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	6.25 mm	9.53 mm	7.54 mm	M5
Mounting Hardware ULTRASONIC INSERT, STAINLESS IUC-M3-2 SI 1: $592 40.472In Stock 68.141On Order	Mfr. Part # IUC-M3-2 Mouser Part # 153-IUC-M3-2	SI	Mounting Hardware ULTRASONIC INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	40.472In Stock 68.141On Order On Order Ship Dates Mfr. #: IUC-M3-2 Stock: 40.472 Can Ship Immediately On Order: 6.141 Pending 62.000 Expected 11/10/2026 Factory Lead-Time: 19 Weeks	$592 $423 $338 $304 View $283 $275 $259 $253 $245	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	3.58 mm	5.56 mm	4.37 mm	M3
Mounting Hardware ULTRASONIC INSERT, STAINLESS IUC-M4-2 SI 1: $1.014 9.049In Stock	Mfr. Part # IUC-M4-2 Mouser Part # 153-IUC-M4-2	SI	Mounting Hardware ULTRASONIC INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	9.049In Stock	$1.014 $721 $578 $520 View $482 $469 $442 $433 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	5.28 mm	7.92 mm	6.35 mm	M4
Mounting Hardware ULTRASONIC INSERT, STAINLESS IUC-M3-1 SI 1: $547 9.542In Stock	Mfr. Part # IUC-M3-1 Mouser Part # 153-IUC-M3-1	SI	Mounting Hardware ULTRASONIC INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	9.542In Stock	$547 $391 $313 $281 View $262 $254 $239 $235 $227	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	3.89 mm	3.43 mm	4.37 mm	M3
Mounting Hardware ULTRASONIC INSERT, STAINLESS IUC-M4-1 SI 1: $684 9.895In Stock	Mfr. Part # IUC-M4-1 Mouser Part # 153-IUC-M4-1	SI	Mounting Hardware ULTRASONIC INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	9.895In Stock	$684 $485 $388 $366 View $310 $297 $291 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	5.74 mm	4.7 mm	6.35 mm	M4
Mounting Hardware HI-TORQUE INSERT, STAINLESS IUTC-M3 SI 1: $968 36.257In 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	36.257In Stock	$968 $690 $553 $498 View $461 $449 $424 $415 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: $1.253 3.696In 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	3.696In Stock 10.000Expected 11/17/2026	$1.253 $942 $734 $692 View $677 $654 $631 $608 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: $1.060 6.761In 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	6.761In Stock	$1.060 $792 $616 $581 View $568 $549 $530 $512 $504	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	6.43 mm	9.52 mm	6.93 mm	M5
Mounting Hardware HI-TORQUE INSERT, BRASS IUTB-M4 SI 1: $581 12.138In Stock	Mfr. Part # IUTB-M4 Mouser Part # 153-IUTB-M4	SI	Mounting Hardware HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	12.138In Stock	$581 $414 $330 $297 View $277 $269 $253 $248 $239	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	5.67 mm	8.15 mm	6.17 mm	M4
Mounting Hardware HI-TORQUE INSERT, BRASS IUTFB-M3 SI 1: $501 21.807In Stock	Mfr. Part # IUTFB-M3 Mouser Part # 153-IUTFB-M3	SI	Mounting Hardware HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	21.807In Stock	$501 $357 $285 $269 View $228 $218 $213 $206	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	4.01 mm	5.74 mm	5.54 mm	M3