545 piece Stainless Steel Screw/Bolt Kit, M3, M4, M5, M6

  • RS Stock No. 225-3363
  • Manufacturer RS PRO
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): GB
Product Details

ISO Metric Threads A4 Stainless Steel, M3 - M6

A4 grade 18//8 stainless steel (Type 316 S16)
Supplied in polypropylene storage box

A4 Stainless Steel Hex Cap Socket Screws

From the trusted RS PRO brand, this set of high-quality hexagonal cap socket screws have a hexagonal drive and a stainless finish. Socket screws are tightened using an Allan or Hex key, ideal for applications where a lack of space leaves externally wrenched fasteners unpractical. Hex cap head screws have a hexagonal socket and a head height that is equal to the shank diameter. They are used instead of a standard hex bolt when there is less clearance available.

These machine screws are made from A4 stainless steel, which is often known as ’Marine Grade’ for its high hardness level and high resistance to wear & tear. These A4-grade slotted machine screws are fully-threaded fasteners for reliable fixing.

In this kit, you will find a range of 545 socket screws with hexagonal socket caps for Allan or hex keys. The kit includes thread sizes of M3, M4, M5, and M6 with lengths ranging from 6mm to 25mm.

Features and Benefits

  • A2 stainless steel

  • Hex socket cap socket screws

  • Supplied in a polypropylene case with a hinged lid


The impressive strength of A4 stainless steel, also known as ’Type 314’ or ’Marine Grade’, makes it a versatile component material that can withstand very high levels of wear and tear. A4 Stainless provides the highest level of corrosion resistance, making it an excellent material for applications in which there will be contact with food, fresh water, or chemicals, as well as surgical implants and even underwater installations.

Due to these attributes of Type 314 stainless steel, these machine screws are suitable for a wide range of applications, including:

  • Chemical equipment

  • Food & drug production equipment

  • Bearing plates

  • Heat Exchanger tubes

  • Pumps & valves

  • Underwater installations

  • Surgical equipment and implants


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

Attribute Value
Number of Pieces 545
Screw/Bolt Type Socket Screw
Head Shape Hex Socket Cap
Drive Type Hex Socket
Screw/Bolts Lengths 6 → 25mm
Thread Size M3, M4, M5, M6
Material Stainless Steel
Stainless Steel Type A4 316
Finish Plain
Screw/Bolt Length Longest 25mm
Screw/Bolt Length Shortest 6mm
3 : Next working day (AU stock)
48 : 5 working days (Global stock)
Price (ex. GST) 1 Kit of 1
$ 281.31
(exc. GST)
$ 309.44
(inc. GST)
1 +
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