RS PRO, M3 Countersunk Head, 40mm Stainless Steel Slot A2 304

Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
Product Details

Metric Thread - A2 Stainless Steel

Machine screws are fully threaded screws that are specifically designed to be used in pre-tapped holes or used with conforming nuts and washers in through holes. Machine screws are available in an array of configurations, materials, driver head types and sizes.
As their name implies, machine screws are used to fasten various components together in appliances, tools, machines, electronic devices, vehicles amongst a whole host of other objects. Machine screws are similar to a bolt but have a socket in the head which allows it to be turned with a screwdriver.

Are they easy to assemble?

Our slot countersunk head machine screws have been designed to give the user an easy assembling experience.

When are they used ?

This screw type is an excellent solution for when you need the head to sink into the material.

Features & Benefits

• Excellent corrosion resistance • Versatile in the number of joints they can fasten
• Features a stainless steel finish
• Metric thread
• Recyclable
• Can be used up to 800°C
• A2 grade 18/8 stainless steel type (304 S15)

Typical Applications

• Food Industries • Medical sector
• Chemical Industries
• Construction
• Commercial
• Electronic appliances


This product requires a slotted screwdriver to make use of the full function. To see the range of our slot countersunk head machine screws please refer to the datasheet and fasteners selection guide. Through these two documents you will also find the various thread sizes and lengths that we have to offer.


Threaded in accordance with DIN 963 standards

Attribute Value
Head Shape Countersunk
Drive Type Slot
Length Metric 40mm
Thread Size Metric M3
Material Stainless Steel
Stainless Steel Type A2 304
Thread Pitch 0.5
Available to back order for despatch 26/02/2020
Price 1 Bag of 100
£ 5.72
(exc. VAT)
£ 6.86
(inc. VAT)
Per Bag
Per unit*
1 - 4
5 - 9
10 - 29
30 +
*price indicative
Related Products
From RS PRO a high-quality machine screw with ...
From RS PRO a high-quality machine screw with a flat countersunk head for flush fitting and a versatile Pozidriv recess for a superior grip when tightening. This machine screw has a metric thread and is made from high quality A2 stainless steel which has strong abrasion resistance and excellent resistance ...
They are usually graded, ensuring that it is ...
They are usually graded, ensuring that it is easy to pick the right quality for the task A4 grade 18//8 stainless steel (Type 316 S16) Higher level of corrosion resistance than A2 S/S Suitable for use in most food, medical, chemical, construction and electronic applications. Often used for fixing guttering ...
M1X3 | Yahata Neji, M1 Pan Head Stainless ...
M1X3 | Yahata Neji, M1 Pan Head Stainless Steel Cross A2 304 Plain
M1.7X5 | Yahata Neji, M1.7 Flat Head Stainless ...
M1.7X5 | Yahata Neji, M1.7 Flat Head Stainless Steel Cross Plain