Coupling nut

Coupling nuts, Stainless steel 316

Nut size (A.K.A. diameter) is the size bolt that the nut is used with. The same is true of the thread count. Thus a 1/4"-20 nut fits a 1/4"-20 bolt.

Coupling nut diameter and length

Click on a product # for additional info

Prod.
#
Size Buy Each Buy Bag Bag
Qty
Buy Bulk Bulk
Qty

Coarse (standard) thread

20984 #10-24 x 3/4"
$3.47
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$3.47 each
$57.79 / 25
$532.00 / 250

$57.79
Add
25
$532.00
250
20986 1/4"-20 x 7/8"
$1.61
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$1.61 each
$26.86 / 25
$242.00 / 250

$26.86
Add
25
$242.00
250
20988 5/16"-18 x 1"
$1.74
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$1.74 each
$28.97 / 25
$261.00 / 250

$28.97
Add
25
$261.00
250
20990 3/8"-16 x 1-1/8"
$2.17
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$2.17 each
$36.18 / 25
$326.00 / 250

$36.18
Add
25
$326.00
250
20992 4 7/16"-14 x 1-1/4"
$8.34
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$8.34 each
$55.61 / 10
$512.00 / 100

$55.61
Add
10
$512.00
100
20994 1/2"-13 x 1-1/4"
$4.01
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$4.01 each
$66.84 / 25
$602.00 / 250

$66.84
Add
25
$602.00
250
20996 5/8"-11 x 1-3/8"
$10.37
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$10.37 each
$69.13 / 10
$636.00 / 100

$69.13
Add
10
$636.00
100
20995 5/8"-11 x 1-3/4"
$11.13
Add

$11.13 each
$74.20 / 10
$683.00 / 100

$74.20
Add
10
$683.00
100
20997 3/4"-10 x 2"
$13.71
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$13.71 each
$91.38 / 10
$841.00 / 100

$91.38
Add
10
$841.00
100
20998 4 7/8"-9 x 2-1/2"
$39.31
Add

$39.31 each
$157.24 / 5
$694.00 / 25

$157.24
Add
5
$694.00
25
20999 4 1"-8 x 2-1/2"
$43.23
Add

$43.23 each
$172.92 / 5
$763.00 / 25

$172.92
Add
5
$763.00
25

Fine thread

20987 4 1/4"-28 x 7/8"
$5.41
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$5.41 each
$90.09 / 25
$811.00 / 250

$90.09
Add
25
$811.00
250
20991 4 3/8"-24 x 1-1/8"
$7.15
Add

$7.15 each
$119.17 / 25
$1,073.00 / 250

$119.17
Add
25
$1,073.00
250

4 This item is a semi-standard size and is therefore more expensive.

See also

Metric coupling nut

Metric coupling nuts

A long nut used to connect pieces of threaded rod or other male threaded fasteners.