Socket Screws


Socket screws have a cylindrical head and an internal hex drive. They are used when externally wrenched fasteners are not practical because of a lack of space. Socket screws are tightened using an Allan or Hex key.
Head Shapes
• Hex Socket Button - has a larger head diameter making them more appropriate for holding thin materials such as sheet metal guards.
• Hex Socket Cap - has a head height equal to the shank diameter. Used instead of a hex bolt when there is less clearance available.
• Hex Socket Countersunk - used when you need a screw to fit flush or below the surface of your material
• Hex Socket Shoulder - often used as a pivot point or axis because shoulders are ground to a tight tolerance. They feature a small cylindrical head with tall vertical sides.
When to use a Socket Screw
Socket screws are often used in applications where there is limited clearance such as in machine building and maintenance, tools and dies and engineering applications.
Advantages of using a Socket Screw
• As compared to ordinary fasteners, fewer socket screws of the same size can achieve the same clamping force in a joint.
• As fewer screws are required for a given job, fewer holes are required to be drilled and tapped.
• There is weight reduction as fewer screws are used.
• There are weight reductions due to the smaller size of the component parts. The cylindrical heads of socket screws need less space than hex heads and require no additional wrench space.

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Description Price Thread Size Length Head Shape Material Stainless Steel Type Finish Thread Type Thread Pitch
RS Stock No. 232-8388
BrandRS PRO
£6.47
1 Box of 50
Box(es)
M4 10mm Hex Socket Countersunk Stainless Steel A4 316 Plain Metric 0.7mm
RS Stock No. 281-114
BrandRS PRO
£14.49
1 Box of 50
Box(es)
M6 16mm Hex Socket Cap Stainless Steel A2 304 Plain Metric 1mm
RS Stock No. 281-675
BrandRS PRO
£10.17
1 Box of 100
Box(es)
M8 10mm Hex Socket Set Steel - Black, Self-Colour Metric 1.25mm
RS Stock No. 484-0004
BrandRS PRO
£16.46
1 Box of 100
Box(es)
M6 20mm Hex Socket Cap Steel - Bright Zinc Plated Metric 1mm
RS Stock No. 660-4636
BrandRS PRO
£16.17
1 Bag of 50
Bag(s)
M3 10mm Hex Socket Cap Stainless Steel A4 316 Plain Metric 0.5mm
RS Stock No. 304-4918
BrandRS PRO
£5.46
1 Box of 50
Box(es)
M3 8mm Hex Socket Countersunk Stainless Steel A4 316 Plain Metric 0.5mm
RS Stock No. 660-4639
BrandRS PRO
£17.35
1 Bag of 50
Bag(s)
M4 10mm Hex Socket Cap Stainless Steel A4 316 Plain Metric 0.7mm
RS Stock No. 183-8597
BrandRS PRO
£10.53
1 Box of 100
Box(es)
M3 8mm Hex Socket Button Stainless Steel A2 304 Plain Metric 0.5mm
RS Stock No. 281-035
BrandRS PRO
£10.83
1 Box of 50
Box(es)
M4 12mm Hex Socket Cap Stainless Steel A2 304 Plain Metric 0.7mm
RS Stock No. 290-102
BrandRS PRO
£12.14
1 Box of 50
Box(es)
M4 20mm Hex Socket Cap Stainless Steel A2 304 Plain Metric 0.7mm
RS Stock No. 232-8366
BrandRS PRO
£5.71
1 Box of 50
Box(es)
M3 10mm Hex Socket Countersunk Stainless Steel A4 316 Plain Metric 0.5mm
RS Stock No. 281-085
BrandRS PRO
£12.68
1 Box of 50
Box(es)
M5 16mm Hex Socket Cap Stainless Steel A2 304 Plain Metric 0.8mm
RS Stock No. 187-1235
BrandRS PRO
£13.98
1 Bag of 50
Bag(s)
M3 16mm Hex Socket Cap Stainless Steel A4 316 Plain Metric 0.5mm
RS Stock No. 183-8626
BrandRS PRO
£9.03
1 Box of 100
Box(es)
M4 8mm Hex Socket Button Stainless Steel A2 304 Plain Metric 0.7mm
RS Stock No. 232-8287
BrandRS PRO
£15.08
1 Box of 50
Box(es)
M6 16mm Hex Socket Button Stainless Steel A4 316 Plain Metric 1mm
RS Stock No. 280-997
BrandRS PRO
£10.88
1 Box of 50
Box(es)
M3 8mm Hex Socket Cap Stainless Steel A2 304 Plain Metric 0.5mm
RS Stock No. 281-423
BrandRS PRO
£8.04
1 Box of 100
Box(es)
M4 10mm Hex Socket Countersunk Steel - Black, Self-Colour Metric 0.7mm
RS Stock No. 290-124
BrandRS PRO
£15.25
1 Box of 50
Box(es)
M5 25mm Hex Socket Cap Stainless Steel A2 304 Plain Metric 0.8mm
RS Stock No. 281-372
BrandRS PRO
£9.19
1 Box of 100
Box(es)
M3 6mm Hex Socket Countersunk Steel - Black, Self-Colour Metric 0.5mm
RS Stock No. 281-120
BrandRS PRO
£12.32
1 Box of 50
Box(es)
M6 20mm Hex Socket Cap Stainless Steel A2 304 Plain Metric 1mm
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The RS PRO hexagon head socket cap screws ...
Description:
The RS PRO hexagon head socket cap screws have a narrow head and are perfect for use in hard to reach areas. The fasteners are good in machine repair and maintenance and in many sectors including food and beverage, automotive and aerospace.This range of fasteners are produced from A2 (304) ...