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RS PRO Brass Threaded Insert - Expansion insert

RS PRO range of expansion inserts which are suitable for use with most plastic materials, using either through or blind holes. These threaded inserts feature a knurled outer diameter with expansion slots that prevent rotation or loosening due to vibration and ensures consistent self-locking pressure on the fixing screws.
Threaded inserts are designed to be placed into existing holes to provide a threaded receptacle so that screws, bolts or other fixings can be installed. RS PRO have a great range of threaded inserts made from various materials including brass and steel with zinc plated finishes.
Options include:
Threaded Inserts available with Flush Head
278-534 - Insert M3 flush
278-540 - Insert M3.5 flush
278-556 - Insert M4 flush
278-562 - Insert M5 flush
278-578 - Insert M6 flush
Threaded Inserts available with Flange Head
278-584 - Insert M3 flange
278-590 - Insert M3.5 flange
278-607 - Insert M4 flange
278-613 - Insert M5 flange
278-629 - Insert M6 flange

Features and Benefits:

• Material is brass - inserts are durable and resistant to corrosion, provides a better level of corrosion resistance than steel
• Knurled for grip
• Simple press or hammer in - press-in installation into drilled or moulded holes of specified size
• Can be used in drilled or moulded holes
• Various thread sizes - M3, M3.5, M4, M5 and M6
• Insertion of the screw expands the insert giving a self-locking action

Typical Applications:

• Threaded inserts are available in various materials and finishes and metric course threads to suit every application. Expansion inserts are ideal for plastics which can resist the expansion of the insert but also flexible to let the knurls anchor into the material. Threaded expansion inserts are designed to provide strong reusable threads in thermoset and other hard plastics and are commonly used in plastic casings and housing.

RS PRO
RS PRO is our own brand range and brings you a wide range of high-quality, great value products offering you more choice. Trusted by engineers all over the world, every part of every RS PRO product has been rigorously tested against demanding industry standards; they’re only given the RS PRO Seal of Approval if we’re confident of their exceptional quality, which means you can be confident too.