M3 Socket Countersunk Screws (DIN 7991) - Stainless Steel (A2)
M3 Socket Countersunk Screws (DIN 7991) - Stainless Steel (A2) - 4mm / Pack of 1 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
We strive to process and dispatch all orders within 1-2 business days
of receiving them. Orders placed on weekends or public holidays will be processed on the next business day.
Should your order be delayed, i.e. out of stock/limited quantity, a member of the team will contact you via phone/email to provide you with
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We ship all orders via Royal Mail 24 with the option for customers to upgrade to Royal Mail Special Delivery Guaranteed. Please note that with certain orders due to weight/length, a courier company will be used instead.
M3 Socket Countersunk Screws (DIN 7991) - Stainless Steel (A2)
M3 Socket Countersunk Screws (DIN 7991) in Stainless Steel (A2) are another type of screws with specific characteristics:
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M3: This is the metric thread size of the screw, indicating a 3-millimeter diameter.
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Socket: These screws feature a socket (hexagonal) drive, requiring a hex key or Allen wrench for installation and removal. The socket drive design provides a secure and efficient way to apply torque.
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Countersunk: Countersunk screws have a conical head with a flat top, allowing them to sit flush with the surface when installed, providing a clean and smooth finish.
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DIN 7991: This refers to the DIN specification that the screws conform to. DIN 7991 specifies the dimensions, tolerances, and other requirements for socket countersunk screws.
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Stainless Steel (A2): Stainless steel is a corrosion-resistant material, and A2 is a specific grade or alloy within the stainless steel family. In this context:
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Stainless Steel: Stainless steel is highly resistant to corrosion, making it suitable for a wide range of applications, including those exposed to moisture, humidity, or chemicals.
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A2: A2 stainless steel, also known as AISI 304, is a popular stainless steel grade. It is known for its excellent corrosion resistance, making it suitable for general-purpose applications. It contains about 18% chromium and 8% nickel, which contribute to its corrosion resistance properties.
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| Material | Stainless Steel (A2) |
| Finish | Natural |
| Manufacturing Standard | DIN 7991 |
| Screw Thread Pitch | 0.5mm |
| Thread | M3 (3mm), Right Hand Thread |
| Countersunk Angle (CA) | 90 Degrees |
| Head Length [Max] (H) | 1.86mm |
| Head Diameter [Max] (D) | 6.72mm |
| Head Diameter [Min] (D) | 5.54mm |
| Hexagon Across Flats / Allen Key Size (J) |
2mm |
| Hexagon Depth (P) |
1.1mm |
For larger quantities or sizes not listed, please email frank@franksfasteners.co.uk and we will be happy to provide you with a quotation.
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