RS PRO, M3 Brass Threaded Insert, 5.5mm diameter 4mm Depth 5.7mm

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Subtotal (1 bag of 100 units)*

£28.88

(exc. VAT)

£34.66

(inc. VAT)

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  • 223 unit(s) ready to ship
  • Plus 37 unit(s) ready to ship from another location
  • Plus 37 unit(s) shipping from 14 October 2025
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RS Stock No.:
204-0620
Brand:
RS PRO
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Brand

RS PRO

Thread Size

M3

Flange Diameter

5.5mm

Fixing Hole Diameter

4mm

Body Outside Diameter

5.5mm

Body Depth

5.7mm

Material

Brass

Thickness of Material Maximum

1.6mm

RS PRO Brass Threaded Insert


RS PRO introduces the fantastic range of heat install brass inserts designed for high performance in almost all thermoplastics, using either drilled or moulded holes. These threaded inserts feature an opposing herringbone knurled outer diameter for a secure hold and to reduce the stress on the plastic that could cause cracks. They also have a pilot end which aids insertion and makes alignment with the hole easy.

Features and Benefits


  • Material is brass - metal inserts are durable and resistant to corrosion, provides a better level of corrosion resistance than steel

  • Opposing herringbone knurled for a strong grip

  • Pilot ended to aid in insertion

  • Heat or Ultrasonic installation

  • Can be used in drilled or moulded holes

  • Various thread sizes - M3, M3.5, M4, M5 and M6

  • High torque & pull out, suitable for thin boss walls to maximise design space

  • Available in Flush or Flange headings

  • The Flange headed version of the threaded insert to be used for electrical contact and higher performance

Applications


Threaded inserts are available in various materials and finishes and metric course threads to suit every application. Heat inserts are particularly suitable in thermoplastic materials that are prone to stress cracks that are also flexible to let the knurls anchor into the material. Threaded inserts are designed to provide strong permanent threads in thermoset and other hard plastics and are commonly used in plastic casings and housing.

Options Available


RS PRO has designed a range of options to suit your needs
Threaded Inserts available with Flush Head
204-0616 - Insert M3 flush
204-0615 - Insert M3.5 flush
204-0617 - Insert M4 flush
204-0618 - Insert M5 flush
204-0619 - Insert M6 flush

Threaded Inserts available with Flange Head
204-0620 - Insert M3 flange
204-0621 - Insert M4 flange
204-0622 - Insert M5 flange
204-0623 - Insert M6 flange

Why RS PRO?


RS Pro is our family brand to go-to and brings you a wide range of high-quality and high-value products to support your project. Trusted by engineers all over the world, every part of every RS PRO product is always rigorously tested against demanding industry standards. We are only giving the RS PRO seal of approval if we're confident of their exceptional quality, which means you can be convinced too.

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