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6 Lobe TX Mushroom Head Barrel Nuts

6 Lobe TX Mushroom Head Barrel Nuts are commonly known as Sex Bolts or Sleeve Nuts and host a standard TX, or Torx drive. They are installed using a standard Torx screwdriver, wrench or insert bit.

Barrel Nuts are typically used to clamp two or more materials together and feature an internally threaded female barrel, allowing screws with a matching thread to fasten into.

The domed mushroom, or mush head, is wider in diameter to create a larger bearing surface – while the smooth barrel under the head helps to maintain a clean and aesthetic finish.

These 6 Lobe TX Mushroom Head Barrel Nuts are often found in playground equipment and outdoor furniture such as park benches.

Note: When calculating the required screw length, it is important to take into account the length of the Barrel Nut and internal thread. The length of Mushroom Head Barrel Nut is measured as the overall length under the head.

Manufactured from A2 Stainless Steel as standard, providing high strength and some corrosion resistance.

Available at Fastenright in barrel diameters from 14mm (M8) to 20mm (M16) and lengths ranging from 15mm to 50mm.

Non-standard sizes, materials and finishes are available to order as specials, including small volume manufacture, modifications and bespoke parts made to drawings. Minimum order quantities apply.

You can find our full range of Barrel Nuts & Sex Bolts here.

6 Lobe TX Mushroom Head Barrel Nut Technical Drawing

Technical Data & Available Sizes
Thread Diameter M8 M10 M12 M14 M16
D1 (mm) 30 30 35 35 35
D (mm) 14 14 16 20 20
L1 (mm) 15 10 25 25 35 25 35
K+C (mm) 6 6 6 6 6
Tool Size Same Tool Fits All (TX50)
Available Lengths (L) M8 M10 M12 M14 M16
15mm black icon image
30mm black icon image
40mm black icon image black icon image black icon image
50mm black icon image black icon image
black icon image = A2 Stainless Steel
Size not listed? Please make an enquiry – we may be able to provide it.
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