Mounting Fixings – Mouser Slovakia

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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 (EUR) 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 Fixings ULTRASONIC INSERT, BRASS IUB-M4-1 SI 1: 0,241 € 8.011In Stock	Mfr. Part No. IUB-M4-1 Mouser Part No 153-IUB-M4-1	SI	Mounting Fixings ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	8.011In Stock	0,241 € 0,173 € 0,138 € 0,125 € View 0,115 € 0,113 € 0,106 € 0,103 € 0,10 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	5.74 mm	4.7 mm	6.35 mm	M4
Mounting Fixings HI-TORQUE INSERT, ALUM IUTA-M5 SI 1: 0,413 € 1.211In Stock	Mfr. Part No. IUTA-M5 Mouser Part No 153-IUTA-M5	SI	Mounting Fixings HI-TORQUE INSERT, ALUM Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	1.211In Stock	0,413 € 0,292 € 0,234 € 0,221 € View 0,187 € 0,179 € 0,175 € 0,169 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	6.43 mm	9.52 mm	6.93 mm	M5
Mounting Fixings HI-TORQUE INSERT, STAINLESS IUTC-M2 SI 1: 0,421 € 7.339In Stock	Mfr. Part No. IUTC-M2 Mouser Part No 153-IUTC-M2	SI	Mounting Fixings HI-TORQUE INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	7.339In Stock	0,421 € 0,298 € 0,238 € 0,224 € View 0,19 € 0,182 € 0,178 € 0,172 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	3.23 mm	4 mm	3.73 mm	M2
Mounting Fixings ULTRASONIC INSERT, STAINLESS IUC-M6-1 SI 1: 0,912 € 1.880In Stock	Mfr. Part No. IUC-M6-1 Mouser Part No 153-IUC-M6-1	SI	Mounting Fixings ULTRASONIC INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	1.880In Stock	0,912 € 0,683 € 0,531 € 0,501 € View 0,49 € 0,474 € 0,458 € 0,441 € 0,434 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	8.86 mm	7.62 mm	9.52 mm	M6
Mounting Fixings ULTRASONIC INSERT, BRASS IUB-256-1 SI 1: 0,232 € 990In Stock	Mfr. Part No. IUB-256-1 Mouser Part No 153-IUB-256-1	SI	Mounting Fixings ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	990In Stock	0,232 € 0,169 € 0,135 € 0,121 € View 0,113 € 0,109 € 0,103 € 0,101 € 0,097 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.118 in	0.115 in	0.141 in	2-56
Mounting Fixings HI-TORQUE INSERT, ALUMINUM 5.72X6.27 M5 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTA-M5-572 SI 1: 0,439 € 973In Stock	Mfr. Part No. IUTA-M5-572 Mouser Part No 153-IUTA-M5-572	SI	Mounting Fixings 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	0,439 € 0,315 € 0,252 € 0,227 € View 0,211 € 0,205 € 0,194 € 0,189 € 0,182 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	6.43 mm	5.72 mm		M5
Mounting Fixings HI-TORQUE INSERT, BRASS .150X.183 6-32 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTB-632-150 SI 1: 0,275 € 9.456In Stock	Mfr. Part No. IUTB-632-150 Mouser Part No 153-IUTB-632-150	SI	Mounting Fixings HI-TORQUE INSERT, BRASS .150X.183 6-32 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	9.456In Stock	0,275 € 0,193 € 0,155 € 0,145 € View 0,123 € 0,118 € 0,115 € 0,111 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.189 in	0.15 in		6-32
Mounting Fixings HI-TORQUE INSERT, STAINLESS IUTC-032 SI 1: 0,834 € 1.184In Stock	Mfr. Part No. IUTC-032 Mouser Part No 153-IUTC-032	SI	Mounting Fixings HI-TORQUE INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	1.184In Stock	0,834 € 0,621 € 0,489 € 0,415 € View 0,401 € 0,395 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	0.253 in	0.375 in	0.273 in	10-32
Mounting Fixings HI-TORQUE INSERT, BRASS IUTFB-832 SI 1: 0,507 € 89In Stock	Mfr. Part No. IUTFB-832 Mouser Part No 153-IUTFB-832	SI	Mounting Fixings HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	89In Stock	0,507 € 0,363 € 0,291 € 0,261 € View 0,243 € 0,237 € 0,223 € 0,218 € 0,211 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.223 in	0.321 in	0.281 in	8-32	Bulk
Mounting Fixings ULTRASONIC INSERT, BRASS IUB-M6-1 SI 1: 0,49 € 1.398In Stock 10.000Expected 9/25/2026	Mfr. Part No. IUB-M6-1 Mouser Part No 153-IUB-M6-1	SI	Mounting Fixings ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	1.398In Stock 10.000Expected 9/25/2026	0,49 € 0,353 € 0,283 € 0,255 € View 0,237 € 0,23 € 0,217 € 0,212 € 0,205 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	8.86 mm	7.62 mm	9.52 mm	M6
Mounting Fixings ULTRASONIC INSERT, STAINLESS IUC-632-1 SI 1: 0,542 € 989In Stock	Mfr. Part No. IUC-632-1 Mouser Part No 153-IUC-632-1	SI	Mounting Fixings ULTRASONIC INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	989In Stock	0,542 € 0,385 € 0,309 € 0,278 € View 0,258 € 0,251 € 0,237 € 0,231 € 0,224 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	0.199 in	0.15 in	0.219 in	6-32
Mounting Fixings HI-TORQUE INSERT, STAINLESS IUTC-440 SI 1: 0,55 € 839In Stock	Mfr. Part No. IUTC-440 Mouser Part No 153-IUTC-440	SI	Mounting Fixings HI-TORQUE INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	839In Stock	0,55 € 0,395 € 0,316 € 0,285 € View 0,264 € 0,257 € 0,242 € 0,237 € 0,229 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	0.158 in	0.226 in	0.179 in	4-40
Mounting Fixings ISA-032 DBL ENDED NUT ISA-032 SI 1: 0,43 € 986In Stock	Mfr. Part No. ISA-032 Mouser Part No 153-ISA-032	SI	Mounting Fixings ISA-032 DBL ENDED NUT Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	986In Stock	0,43 € 0,307 € 0,246 € 0,221 € View 0,206 € 0,20 € 0,188 € 0,184 € 0,178 €	Min.: 1 Mult.: 1	Screws & Fasteners	Nut, Double Ended	Aluminum	0.252 in	0.375 in	0.276 in	10-32
Mounting Fixings ISB-M3 DBL ENDED ISB-M3 SI 1: 0,344 € 14In Stock 10.000Expected 11/27/2026	Mfr. Part No. ISB-M3 Mouser Part No 153-ISB-M3	SI	Mounting Fixings ISB-M3 DBL ENDED Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	14In Stock 10.000Expected 11/27/2026	0,344 € 0,244 € 0,195 € 0,184 € View 0,156 € 0,149 € 0,146 € 0,141 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	3.99 mm	5.74 mm	4.62 mm	M3
Mounting Fixings ULTRASONIC INSERT, BRASS IUB-024-2 SI 1: 0,593 € 679In Stock	Mfr. Part No. IUB-024-2 Mouser Part No 153-IUB-024-2	SI	Mounting Fixings ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	679In Stock	0,593 € 0,419 € 0,335 € 0,316 € View 0,267 € 0,256 € 0,251 € Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.246 in	0.375 in	0.297 in	10-24
Mounting Fixings ULTRASONIC INSERT, BRASS IUB-M4-2 SI 1: 0,292 € 2.198In Stock 10.000Expected 1/25/2027	Mfr. Part No. IUB-M4-2 Mouser Part No 153-IUB-M4-2	SI	Mounting Fixings ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	2.198In Stock 10.000Expected 1/25/2027	0,292 € 0,208 € 0,167 € 0,151 € View 0,139 € 0,136 € 0,128 € 0,125 € 0,12 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	5.28 mm	7.92 mm	6.35 mm	M4
Mounting Fixings ULTRASONIC INSERT, STAINLESS IUC-M3-1 SI 1: 0,413 € 2.072In Stock 10.000Expected 10/2/2026	Mfr. Part No. IUC-M3-1 Mouser Part No 153-IUC-M3-1	SI	Mounting Fixings ULTRASONIC INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	2.072In Stock 10.000Expected 10/2/2026	0,413 € 0,295 € 0,237 € 0,212 € View 0,198 € 0,192 € 0,181 € 0,177 € 0,171 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	3.89 mm	3.43 mm	4.37 mm	M3
Mounting Fixings HI-TORQUE INSERT, ALUM IUTA-632 SI 1: 0,318 € 1.915In Stock	Mfr. Part No. IUTA-632 Mouser Part No 153-IUTA-632	SI	Mounting Fixings HI-TORQUE INSERT, ALUM Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	1.915In Stock	0,318 € 0,231 € 0,185 € 0,167 € View 0,155 € 0,151 € 0,142 € 0,138 € 0,134 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	0.189 in	0.281 in	0.21 in	6-32
Mounting Fixings HI-TORQUE INSERT IUTA-M4 SI 1: 0,361 € 277In Stock 10.000On Order	Mfr. Part No. IUTA-M4 Mouser Part No 153-IUTA-M4	SI	Mounting Fixings HI-TORQUE INSERT Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	277In Stock 10.000On Order	0,361 € 0,256 € 0,206 € 0,185 € View 0,172 € 0,167 € 0,157 € 0,154 € 0,149 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	5.67 mm	8.15 mm	6.17 mm	M4
Mounting Fixings HI-TORQUE INSERT, ALUMINUM 7.62X7.87 M6 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTA-M6-762 SI 1: 0,525 € 479In Stock	Mfr. Part No. IUTA-M6-762 Mouser Part No 153-IUTA-M6-762	SI	Mounting Fixings HI-TORQUE INSERT, ALUMINUM 7.62X7.87 M6 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	479In Stock	0,525 € 0,378 € 0,303 € 0,272 € View 0,253 € 0,246 € 0,231 € 0,227 € 0,219 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	8.03 mm	7.62 mm		M6
Mounting Fixings HI-TORQUE INSERT, BRASS .225X.247 10-32 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTB-032-225 SI 1: 0,482 € 381In Stock	Mfr. Part No. IUTB-032-225 Mouser Part No 153-IUTB-032-225	SI	Mounting Fixings HI-TORQUE INSERT, BRASS .225X.247 10-32 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	381In Stock	0,482 € 0,347 € 0,278 € 0,249 € View 0,232 € 0,225 € 0,212 € 0,208 € 0,201 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.253 in	0.225 in		10-32
Mounting Fixings HI-TORQUE INSERT, BRASS IUTFB-0420 SI 1: 0,679 € 505In Stock	Mfr. Part No. IUTFB-0420 Mouser Part No 153-IUTFB-0420	SI	Mounting Fixings HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	505In Stock	0,679 € 0,506 € 0,416 € 0,353 € View 0,35 € 0,338 € 0,326 € 0,321 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.316 in	0.5 in	0.375 in	1/4-20
Mounting Fixings ULTRASONIC INSERT, BRASS IUB-832-2 SI 1: 0,284 € 9.721In Stock	Mfr. Part No. IUB-832-2 Mouser Part No 153-IUB-832-2	SI	Mounting Fixings ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	9.721In Stock	0,284 € 0,20 € 0,16 € 0,146 € View 0,131 € 0,129 € 0,122 € 0,12 € 0,115 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.208 in	0.312 in	0.25 in	8-32
Mounting Fixings HI-TORQUE INSERT, BRASS IUTB-440 SI 1: 0,284 € 8.624In Stock	Mfr. Part No. IUTB-440 Mouser Part No 153-IUTB-440	SI	Mounting Fixings HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	8.624In Stock	0,284 € 0,196 € 0,157 € 0,144 € View 0,129 € 0,127 € 0,12 € 0,117 € 0,114 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.158 in	0.226 in	0.179 in	4-40
Mounting Fixings HI-TORQUE INSERT, BRASS IUTB-632 SI 1: 0,292 € 9.852In Stock	Mfr. Part No. IUTB-632 Mouser Part No 153-IUTB-632	SI	Mounting Fixings HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	9.852In Stock	0,292 € 0,206 € 0,164 € 0,15 € View 0,134 € 0,133 € 0,126 € 0,123 € 0,119 €	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.189 in	0.281 in	0.21 in	6-32