Cap Head Screws have a cylindrical head with a flat top and a recessed hexagonal socket (internal drive). The socket allows for tightening or loosening the screw using a hex key or Allen wrench.

Frank's Fasteners provides Socket Cap Head Screws in A2/304 Stainless Steel and 12.9 High Tensile Steel.

Additional material and finishes can be sourced, don't hesitate to get in touch with us with your enquiry. 




Diameter Pitch Head Diameter Depth of head Socket Wrench Size
M1.6 0.35mm 3.0mm 1.6mm 1.5mm
M2 0.4mm 3.8mm 2.0mm 1.5mm
M2.5 0.45mm 4.5mm 2.5mm 2.0mm
M3 0.5mm 5.5mm 3.0mm 2.5mm
M4 0.7mm 7.0mm 4.0mm 3.0mm
M5 0.8mm 8.5mm 5.0mm 4.0mm
M6 1.0mm 6mm 5mm
M8 1.25mm 13mm 8mm 6mm
M10 1.5mm 16mm 10mm 8mm
M12 1.75mm 18mm 12mm 10mm
M14 2.0mm 21mm 14mm 12mm
M16 2.0mm 24mm 16mm 14mm
M18 2.5mm 27mm 18mm 14mm
M20 2.5mm 30mm 20mm 17mm
M22 2.5mm 33mm 22mm 17mm
M24 3.0mm 36mm 24mm 19mm
M27 3.0mm 40mm 27mm 19mm
M30 3.5mm 45mm 30mm 22mm
M33 3.5mm 50mm 33mm 24mm
M36 4.0mm 54mm 36mm 27mm
M39 4.0mm 58mm 39mm 27mm
M42 4.5mm 63mm 42mm 32mm
M48 5.0mm 72mm 48mm 36mm

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