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Slotted Nuts

SKU: SL17 Categories: ,

A slotted nut has slots cut into one end of the nut. When used in application the bolt or threaded bar generally has a predrilled hole so when the slotted nut is threaded on and torqued to the required position it can then be secured using a cotter pin or wire to prevent rotation. Thus slotted nuts are used in applications where vibration or motion might otherwise undo the nut.

Although both the castle nut and slotted nut look similar and can often be used interchangeably because they have almost identical dimensions, they are different in that the protrusions on a slotted nut are from the base of the nut and include the corners, whereas a castle nut looks like a standard nut with triangular portions protruding but not including the corners of the hex.

castle-nut
This is a castle nut

 

Slotted nuts are generally manufactured from steel grade 4, 8 and 10 and Stainless Steel A2 & A4.
Our Grade 8 slotted nuts are stocked in sizes M12 to M24 in a self-colour finish, manufactured to BS3692.
BSF, BSW, UNC & UNF are usually available from stock, 1/4″ to 3″.

Other sizes and materials are available to order with short lead times.

Fastenright Ltd holds various sizes of slotted and castle nuts in stock in grades 4, 8 and 10 for fast delivery.

Our Grade 8 slotted & castle nuts are stocked ranging from M12 to M24 in a self colour finish, manufactured to BS3692.

Other sizes and materials are available to order with short lead times.

BSF, BSW, UNC & UNF are available from 1/4″ to 3″ with other sizes made to order.

Slotted Nuts Technical Drawing

TECHNICAL INFORMATION
D1 S E M MAX W MAX N MIN
M4 7 7.74 5 3.2 1.2
M5 8 8.87 6 4 1.4
M6 10 11.05 7.5 5 2
M7  11 12.12 8 5.5 2
M8 13 14.38 9.5 6.5 2.5
M10 17 18.9 12 8 2.8
M12 19 21.1 15 10 3.5
M14 22 24.49 16 11 3.5
M16 24 26.75 19 13 4.5
M18 27 29.56 21 15 4.5
M20 30 32.95 22 16 4.5
M22 32 35.03 26 18 5.5
M24 36 39.55 27 19 5.5
M27 41 45.2 30 22 5.5
M30 46 50.85 33 24 7
M33 50 55.37 35 26 7
M36 55 60.79 38 29 7
M39 60 66.44 40 31 7
M42 65 71.3 46 34 9
M45 70 78.26 48 36 9
M48 75 82.6 50 38 9
M52 80 88.25 54 42 9
M56 85 95.07 57 45 9
M58 90 100.72 63 48 11
M60 90 100.72 63 48 11
M64 95 106.37 66 51 11
M68 100 112.02 69 54 11
M72 105 117.67 73 58 11
M76 110 123.32 76 61 11
M80 115 128.97 79 64 11
M85 120 134.62 88 68 14
M90 130 145.77 92 72 14
M95 135 151.42 96 76 14
M100 145 162.72 100 80 14