RS PRO Plain Stainless Steel Self Tapping Screw No. 4 x 1/2in Long 13mm Long

  • RS Stock No. 521-557
  • Manufacturer RS PRO
Technical data sheets
Legislation and Compliance
Non Compliant
Product Details

Cross-recess Self-Tapping Screws - A2 Stainless Steel

From the trusted RS PRO brand, these self-tapping screws are ideal for jobs that require a secure fastening without any pre-drilling. They are The thread forming screw is made from A2 stainless steel, ensuring excellent protection against corrosion and wear and tear.

The screws feature a pan head which is great for retention between the head and the material surface. They also have a crosshead recess to ensure high torque when driving.

Features and Benefits

Cross-recess Self-Tapping Screws
A2 grade 18/8 stainless steel (Type 304 S15)


Self-tapping screws are used wherever a reliable and convenient fastening solution is needed. Unlike self-drilling screws, which can be used through metal, self-tapping fasteners are suitable for use with softer materials such as wood, and only need an appropriate driver to use. They do not need a pilot hole drilled to operate effectively. As they are made of A2 stainless steel, they are suitable for specialist environments such as food and catering industries. They are commonly used by;

• Carpenters
• Construction workers
• DIY Enthusiasts


RS PRO aims to be your go-to brand for reliability and value for money. We source great parts at great prices and test everything with our in-house experts to ensure the quality you need.

When it comes to tools, we know that versatility and dependability are what you need. As such, we stock a variety of mainstay and specialist tools to suit any application. Whether you're a professional electrician, plumber, builder or DIY enthusiast, RS PRO is here to support you.

Attribute Value
Length Imperial 1/2in
Length Metric 13mm
Thread Size UTS 4
Head Shape Pan
Drive Type Pozidriv
Finish Plain
Material Stainless Steel
Stainless Steel Type A2 304
18 : Next working day (AU stock)
64 : 5 working days (Global stock)
Price (ex. GST) 1 Bag of 100
$ 11.15
(exc. GST)
$ 12.27
(inc. GST)
Per Bag
Per unit*
1 - 4
5 - 9
10 - 29
30 +
*price indicative
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