M5 x 20mm Socket Cap Head Screw, BZP Grade 12.9 DIN 912

M5 socket cap head screw

M5 cap head screw with a deep internal socket (hex) drive for easy installation allowing you to apply the required torque for a secure hold every time.

Manufactured in grade 12.9 steel with a bright zinc plating and designed with a distinctive compact cylindrical head allowing use in areas where space is tight. 

Installed with an Allen wrench or hex key (Allen key) sees them widely used across many industries. 

A versatile machine screw also known in the trade as Allen key bolts, cap head bolts, or socket screws. 

Available in many sizes and lengths to suit your requirements, these screws are used by DIY enthusiasts and professionals across many diverse sectors including automotive, aerospace, machinery, and construction.

M5 socket cap head screw specification:

• Diameter (TD): M5 - 5mm
• Length (L): 20mm
• Thread length (TL): Fully threaded
• Head width (HW): 8.5mm max
• Head height (HH): 5mm max
• Head type: Cap head
• Recess type (DT): Internal hex drive (Size 4mm)
• Pitch: 0.8mm
• Material: Grade 12.9 steel
• Finish: BZP Bright zinc plated
• Conformity: DIN 912
  

The M5 socket cap head screw is part of an extensive range of socket cap head screws available from Fusion Fixings with bulk discounts.

Don’t forget the hex full nuts?

Don’t forget the hex full nuts for use with your socket cap head screws. Take a look at the BZP M5 hex full nuts.

Do you need socket cap head screws with higher corrosion resistance?

If you need cap head screws with the versatility that high corrosion resistance offers, take a look at our A2 stainless steel, M5 x 20mm socket cap head screw.

For the best resistance to corrosion take a look at our A4 stainless steel M5 x 20mm socket cap head screw which offer marine grade corrosion resistance.

FAQs about BZP socket cap head screws

What material is this socket cap head screw made from?

This screw is made from grade 12.9 steel with a bright zinc plating (BZP), which gives a moderate corrosion resistance. 

How is the length of the cap head screw measured?

The length of these screws is measured from under the head to the end of the thread, not including the head height.

What does DIN 912 mean on a socket cap head screw?

DIN 912 is the industrial standard defining the dimensions, tolerances, and internal hex drive specifications for socket cap head screws, ensuring consistent fit and reliability across applications.

Can BZP socket cap screws be used outdoors?

The socket cap head screws are costed with a bright zinc plating (BZP) which offers a moderate corrosion resistance, which is not suitable for long term outdoor use.

Are socket cap head screws strong enough for precision engineering?

Yes, socket cap head screws are widely used in precision engineering applications due to their ability to be tightened with high torque in tight spaces, along with metric sizing which ensures accurate installation. 

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