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6-Lobe Hexalobular Cap Screw ISO 14579

The 6-Lobe Hexalobular Cap Screw (Torx Head Bolt) is created to ISO 14579 and hosts a six-lobe recess. They are driven using a 6-Lobe wrench or insert bit, making them more efficient than standard slotted screws and hex drive screws.

Also known as Torx Head Cap Screws or Allen Bolts, these screws have a cylindrical head with a six-lobe socket drive which has more resistance to cam out and can be used with power drivers – enabling faster use and higher torque to be achieved.

Available in Steel Grades 8.8 and 12.9, A2 Stainless Steel and A4 Stainless Steel as standard, with other materials, such as Brass, Aluminium and Titanium available to order.

6-Lobe Hexalobular Cap Screw sizes range from M2 to M20 as standard, with larger diameter and lengths available to order.

Upon request we can also offer Hexalobular Socket Cap Head Screws in UNC, UNF, BSW and BSF with tamper-resistant security drive.

Non-standard sizes, materials and finishes are available to order as specials, including small volume manufacture, modifications and custom parts made to drawings.
6-Lobe Hexalobular Cap Screw ISO 14579 drawing

Metric Technical Information & Available Sizes
Thread Diameter dk (mm) k max. (mm) Drive Size Pitch (mm) Available Lengths
M2 3.80 2.0 T6 0.40 3mm to 20mm
M2.5 4.50 2.50 T8 0.45 3mm to 20mm
M3 5.50 3.00 T10 0.50 3mm to 30mm
M4 7.00 4.00 T20 0.70 5mm to 60mm
M5 8.50 5.00 T25 0.80 6mm to 60mm
M6 10.0 6.00 T30 1.00 6mm to 60mm
M8 13.0 8.00 T45 1.25 8mm to 80mm
M10 16.0 10.00 T50 1.50 8mm to 80mm
M12 18.00 12.00 T55 1.75 10mm to 100mm
M14 21.00 14.00 T60 2.00 25mm to 140mm
M16 24.00 16.00 T70 2.00 25mm to 160mm
M18 27.00 18.00 T80 2.50 30mm to 180mm
M20 30.00 20.00 T90 2.50 30mm to 200mm
Size not listed? Please make an enquiry – we may be able to provide it.
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