Mounting Fixings – Mouser South Africa

.hide-partial { max-height: none; } .show-more { display: none; }

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.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Results: 268

Applied Filters:

Product

Type

Material

Mounting Hole Size

Length

Outside Diameter

Thread Size

Packaging

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) 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-032-2 SI 1: $0.62 744In Stock 10,000Expected 2027/02/05	Mfr. Part No. IUB-032-2 Mouser Part No 153-IUB-032-2	SI	Mounting Fixings ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	744In Stock 10,000Expected 2027/02/05	$0.62 $0.442 $0.354 $0.317 View $0.297 $0.287 $0.271 $0.265 $0.256	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.246 in	0.375 in	0.297 in	10-32
Mounting Fixings ULTRASONIC INSERT, STAINLESS IUCC-M3-2 SI 1: $0.62 344In Stock	Mfr. Part No. IUCC-M3-2 Mouser Part No 153-IUCC-M3-2	SI	Mounting Fixings ULTRASONIC INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	344In Stock	$0.62 $0.44 $0.354 $0.333 View $0.281 $0.269 $0.264 $0.255	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	4.7 mm	6.35 mm	5.56 mm	M3
Mounting Fixings HI-TORQUE INSERT, ALUM IUTA-256 SI 1: $0.34 253In Stock	Mfr. Part No. IUTA-256 Mouser Part No 153-IUTA-256	SI	Mounting Fixings HI-TORQUE INSERT, ALUM Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	253In Stock	$0.34 $0.247 $0.198 $0.178 View $0.165 $0.16 $0.151 $0.148 $0.143	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	0.127 in	0.157 in	0.147 in	2-56
Mounting Fixings HI-TORQUE INSERT, ALUM IUTA-440 SI 1: $0.33 559In Stock	Mfr. Part No. IUTA-440 Mouser Part No 153-IUTA-440	SI	Mounting Fixings HI-TORQUE INSERT, ALUM Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	559In Stock	$0.33 $0.235 $0.188 $0.169 View $0.157 $0.154 $0.144 $0.141 $0.136	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	0.158 in	0.226 in	0.179 in	4-40
Mounting Fixings HI-TORQUE INSERT, ALUMINUM .135X.152 4-40 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTA-440-135 SI 1: $0.33 946In Stock	Mfr. Part No. IUTA-440-135 Mouser Part No 153-IUTA-440-135	SI	Mounting Fixings HI-TORQUE INSERT, ALUMINUM .135X.152 4-40 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	946In Stock	$0.33 $0.235 $0.188 $0.169 View $0.157 $0.154 $0.144 $0.141 $0.136	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	0.158 in	0.135 in		4-40
Mounting Fixings HI-TORQUE INSERT IUTA-M2.5 SI 1: $0.37 7,249In Stock	Mfr. Part No. IUTA-M2.5 Mouser Part No 153-IUTA-M2.5	SI	Mounting Fixings HI-TORQUE INSERT Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	7,249In Stock	$0.37 $0.258 $0.207 $0.195 View $0.165 $0.158 $0.154 $0.149	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	4.01 mm	5.74 mm	4.55 mm	M2.5
Mounting Fixings ULTRASONIC INSERT, BRASS IUB-632-1 SI 1: $0.24 98In Stock 10,000On Order	Mfr. Part No. IUB-632-1 Mouser Part No 153-IUB-632-1	SI	Mounting Fixings ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	98In Stock 10,000On Order	$0.24 $0.166 $0.133 $0.126 View $0.106 $0.101 $0.099 $0.097	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.199 in	0.15 in	0.219 in	6-32
Mounting Fixings ULTRASONIC INSERT, STAINLESS IUC-024-1 SI 1: $0.861 380In Stock	Mfr. Part No. IUC-024-1 Mouser Part No 153-IUC-024-1	SI	Mounting Fixings ULTRASONIC INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	380In Stock	$0.861 $0.64 $0.504 $0.427 View $0.412 $0.406	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	0.267 in	0.225 in	0.297 in	10-24
Mounting Fixings ULTRASONIC INSERT, STAINLESS IUC-256-1 SI 1: $0.48 5,924In Stock	Mfr. Part No. IUC-256-1 Mouser Part No 153-IUC-256-1	SI	Mounting Fixings ULTRASONIC INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	5,924In Stock	$0.48 $0.34 $0.272 $0.245 View $0.228 $0.221 $0.209 $0.204 $0.197	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	0.118 in	0.115 in	0.141 in	2-56
Mounting Fixings HI-TORQUE INSERT, BRASS IUTB-M6 SI 1: $0.811 841In Stock 10,000Expected 2027/02/08	Mfr. Part No. IUTB-M6 Mouser Part No 153-IUTB-M6	SI	Mounting Fixings HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	841In Stock 10,000Expected 2027/02/08	$0.811 $0.576 $0.461 $0.434 View $0.368 $0.352 $0.345 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	8.03 mm	12.7 mm	8.69 mm	M6
Mounting Fixings HI-TORQUE INSERT, STAINLESS STEEL .150X.183 6-32 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTC-632-150 SI 1: $0.82 230In Stock	Mfr. Part No. IUTC-632-150 Mouser Part No 153-IUTC-632-150	SI	Mounting Fixings HI-TORQUE INSERT, STAINLESS STEEL .150X.183 6-32 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	230In Stock	$0.82 $0.59 $0.471 $0.424 View $0.394 $0.383 $0.361 $0.354 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	0.189 in	0.15 in	0.21 in	6-32
Mounting Fixings HI-TORQUE INSERT, BRASS IUTFB-M2.5 SI 1: $0.561 6,506In Stock	Mfr. Part No. IUTFB-M2.5 Mouser Part No 153-IUTFB-M2.5	SI	Mounting Fixings HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	6,506In Stock	$0.561 $0.404 $0.322 $0.29 View $0.269 $0.262 $0.247 $0.242 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	4.01 mm	5.74 mm	5.54 mm	M2.5	Bulk
Mounting Fixings HI-TORQUE INSERT, BRASS IUTFB-M3 SI 1: $0.44 6,884In Stock 15,023On Order	Mfr. Part No. IUTFB-M3 Mouser Part No 153-IUTFB-M3	SI	Mounting Fixings HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	6,884In Stock 15,023On Order	$0.44 $0.313 $0.25 $0.236 View $0.20 $0.191 $0.187 $0.181	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	4.01 mm	5.74 mm	5.54 mm	M3
Mounting Fixings ULTRASONIC INSERT, BRASS IUB-M2.5-1 SI 1: $0.29 4,990In Stock 28,000Expected 2026/11/10	Mfr. Part No. IUB-M2.5-1 Mouser Part No 153-IUB-M2.5-1	SI	Mounting Fixings ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	4,990In Stock 28,000Expected 2026/11/10	$0.29 $0.212 $0.17 $0.154 View $0.142 $0.138 $0.13 $0.127 $0.123	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	3.89 mm	3.43 mm	4.37 mm	M2.5
Mounting Fixings ULTRASONIC INSERT, STAINLESS IUC-256-2 SI 1: $0.711 798In Stock	Mfr. Part No. IUC-256-2 Mouser Part No 153-IUC-256-2	SI	Mounting Fixings ULTRASONIC INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	798In Stock	$0.711 $0.508 $0.406 $0.366 View $0.34 $0.33 $0.311 $0.305 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	0.107 in	0.188 in	0.141 in	2-56
Mounting Fixings HI-TORQUE INSERT, BRASS IUTB-0420 SI 1: $0.811 303In Stock	Mfr. Part No. IUTB-0420 Mouser Part No 153-IUTB-0420	SI	Mounting Fixings HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	303In Stock	$0.811 $0.576 $0.472 $0.40 View $0.384 $0.374 $0.352 $0.345 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.316 in	0.5 in	0.342 in	1/4-20
Mounting Fixings HI-TORQUE INSERT, BRASS .300X.310 1/4-20 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTB-0420-300 SI 1: $0.89 14In Stock	Mfr. Part No. IUTB-0420-300 Mouser Part No 153-IUTB-0420-300	SI	Mounting Fixings HI-TORQUE INSERT, BRASS .300X.310 1/4-20 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	14In Stock	$0.89 $0.638 $0.511 $0.459 View $0.427 $0.415 $0.391 $0.383 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.316 in	0.3 in	0.342 in	1/4-20
Mounting Fixings HI-TORQUE INSERT, BRASS IUTB-M4 SI 1: $0.511 2,138In Stock 10,000Expected 2026/11/11	Mfr. Part No. IUTB-M4 Mouser Part No 153-IUTB-M4	SI	Mounting Fixings HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	2,138In Stock 10,000Expected 2026/11/11	$0.511 $0.363 $0.29 $0.261 View $0.243 $0.236 $0.222 $0.217 $0.211	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	5.67 mm	8.15 mm	6.17 mm	M4
Mounting Fixings HI-TORQUE INSERT, BRASS 7.62X7.87 M6 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTB-M6-762 SI 1: $0.811 119In Stock	Mfr. Part No. IUTB-M6-762 Mouser Part No 153-IUTB-M6-762	SI	Mounting Fixings HI-TORQUE INSERT, BRASS 7.62X7.87 M6 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	119In Stock	$0.811 $0.576 $0.461 $0.434 View $0.368 $0.352 $0.345 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	8.03 mm	7.62 mm		M6
Mounting Fixings HI-TORQUE INSERT, BRASS 12.70X9.50 M8 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTB-M8 SI 1: $0.97 2,776In Stock	Mfr. Part No. IUTB-M8 Mouser Part No 153-IUTB-M8	SI	Mounting Fixings HI-TORQUE INSERT, BRASS 12.70X9.50 M8 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	2,776In Stock	$0.97 $0.69 $0.565 $0.479 View $0.461 $0.448 $0.422 $0.413 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	9.6 mm	12.7 mm	10.31 mm	M8
Mounting Fixings ULTRASONIC INSERT, BRASS IUB-032-1 SI 1: $0.40 33In Stock 10,000Expected 2027/01/29	Mfr. Part No. IUB-032-1 Mouser Part No 153-IUB-032-1	SI	Mounting Fixings ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	33In Stock 10,000Expected 2027/01/29	$0.40 $0.29 $0.233 $0.209 View $0.194 $0.188 $0.178 $0.174 $0.167	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.267 in	0.225 in	0.297 in	10-32
Mounting Fixings ULTRASONIC INSERT, BRASS IUB-M4-1 SI 1: $0.28 2,461In Stock 20,000On Order	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	2,461In Stock 20,000On Order On Order Ship Dates Mfr. No: IUB-M4-1 Stock: 2,461 Can Dispatch Immediately On Order: 10,000 Expected 2027/02/08 10,000 Expected 2027/02/26 Factory Lead Time: 17 Weeks	$0.28 $0.201 $0.16 $0.145 View $0.134 $0.131 $0.123 $0.12 $0.116	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	5.74 mm	4.7 mm	6.35 mm	M4
Mounting Fixings ULTRASONIC INSERT, BRASS IUBB-M3-1 SI 1: $0.37 8,164In Stock	Mfr. Part No. IUBB-M3-1 Mouser Part No 153-IUBB-M3-1	SI	Mounting Fixings ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	8,164In Stock	$0.37 $0.263 $0.211 $0.198 View $0.167 $0.16 $0.157 $0.152	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	5.05 mm	3.81 mm	5.56 mm	M3
Mounting Fixings ULTRASONIC INSERT, STAINLESS IUC-032-1 SI 1: $0.83 943In Stock	Mfr. Part No. IUC-032-1 Mouser Part No 153-IUC-032-1	SI	Mounting Fixings ULTRASONIC INSERT, STAINLESS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	943In Stock	$0.83 $0.59 $0.472 $0.444 View $0.377 $0.361 $0.354 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	0.267 in	0.225 in	0.297 in	10-32
Mounting Fixings HI-TORQUE INSERT IUTA-M2 SI 1: $0.32 7,220In Stock	Mfr. Part No. IUTA-M2 Mouser Part No 153-IUTA-M2	SI	Mounting Fixings HI-TORQUE INSERT Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	7,220In Stock	$0.32 $0.221 $0.177 $0.166 View $0.141 $0.135 $0.133 $0.127	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	3.23 mm	4 mm	3.73 mm	M2