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Slotted Oval Head Barrel Nuts

Slotted Oval Head Sex Bolts are female internally threaded barrel nuts that host a slotted drive and a countersunk head.

Barrel nuts can often be referred to as sleeve nuts.

The raised countersunk head is raised at 82-degrees. Once the fastener has been inserted into the pre-countersunk hole, the oval part of the head still protrudes slightly.

Available from Fastenright as standard in Brass Nickel and Steel Nickel finishes.

Available with 3/16″ and 1/4″ diameters as standard, offered in a range of lengths.

Non-standard sizes and materials are available to order as specials, including custom parts made to drawings.


Slotted Oval Head Barrel Nut technical drawing

Imperial Technical Information
Barrel Diameter Overall Length Thread Depth Head Diameter Thread
3/16″ 19/64″ .200″ 1/4″ 6-32
25/64″ .200″ 9/32″ 6-32
17/32″ 5/16″ 1/4″ 6-32
43/64″ 3/8″ 3/8″ 6-32
3/16″ 5/16″ 1/4″ 6-32
1/4″ 7/16″ 1/4″ 23/64″ 8-32
7/16″ .275″ 11/32″ 10-32
41/64″ 1/4″ 3/8″ 10-32


Imperial Available Sizes
Barrel Diameter Overall Length
19/64″ 25/64″ 7/16″ 17/32″  41/64″ 43/64″ 5/8″
3/16″ Placeholder image Placeholder image Placeholder image Placeholder image Placeholder image
1/4″ Placeholder image Placeholder image
Placeholder image = Steel Nickel Plated // Placeholder image = Brass Nickel Plated
Size not listed? Please make an enquiry – we may be able to provide it.

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