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Tooling Nuts

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These check nuts are made of 303 stainless steel or low carbon steel, soft, with a black oxide finish. They can be used in conjunction with many other components such as knurled head screws, torque thumb screws, hand knob assemblies, toggle show clamp assemblies and many other tooling applications.

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Product SKUs information
Item Code Price range Availability Thread Size Special Offer Thread Type Type Brand Buy
KN-1
$4.28 - $4.75 81 In stock
3/8-16
Torque Check Nut
Reid Select
V-0
$4.21 - $4.68 424 In stock
10-24
Check Nut
Reid Select
V-1
$4.21 - $4.68 27 In stock
10-32
Check Nut
Reid Select
KN-3
$5.57 - $6.19 38 In stock
5/8-11
Check Nut
Reid Select
V-4
$4.28 - $4.76 92 In stock
3/8-16
Check Nut
Reid Select
V-5
$4.94 - $5.49 62 In stock
1/2-13
Check Nut
Reid Select
V-3
$4.28 - $4.76 110 In stock
5/16-18
Check Nut
Reid Select
VS-2
$6.13 - $6.81 Currently out of stock. Click here for lead time. Include your part number and qty.
1/4-20
Check Nut
Reid Select
VS-3
$6.26 - $6.96 Currently out of stock. Click here for lead time. Include your part number and qty.
5/16-18
Check Nut
Reid Select
VS-1
$6.13 - $6.81 Currently out of stock. Click here for lead time. Include your part number and qty.
10-32
Check Nut
Reid Select
CN-1
$3.40 - $3.78 140 In stock
5/16-18
Machine Coupling Nuts
Reid Select
VS-4
$6.26 - $6.96 Currently out of stock. Click here for lead time. Include your part number and qty.
3/8-16
Check Nut
Reid Select
VS-5
$6.80 - $7.55 43 In stock
1/2-13
Check Nut
Reid Select
CN-4
$5.99 - $6.66 29 In stock
5/8-11
Machine Coupling Nuts
Reid Select
CN-5
$7.85 - $8.72 123 In stock
3/4-10
Machine Coupling Nuts
Reid Select
CN-3
$4.56 - $5.07 43 In stock
1/2-13
Machine Coupling Nuts
Reid Select
CN-20
$2.48 - $2.76 Currently out of stock. Click here for lead time. Include your part number and qty.
M6x1.00
Machine Coupling Nuts
AMF
CN-25
$2.55 - $2.83 7 In stock
M8x1.25
Machine Coupling Nuts
AMF
CN-7
$13.32 - $14.80 Currently out of stock. Click here for lead time. Include your part number and qty.
1-8
Machine Coupling Nuts
Reid Select
CN-35
$1.19 - $1.19 25 In stock
M12 x 1.75
Machine Coupling Nuts
AMF
    • of 6
Check Nut; Base Diameter (Seed)=1.00 in, Overall Height (Seed)=.44 in, Thread Size=3/8-16

KN-1

Price Range
$4.75 - $4.28

Stock Levels
81 In stock
Attributes
  • Thread Size
    3/8-16
  • Type
    Torque Check Nut
  • Base Diameter
    1.00 in
  • Material
    Case-Hardened Steel
  • Outside Diameter
    1.125 in
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Check Nut; Base Diameter (Seed)=0.500 in, Overall Height (Seed)=.219 in, Thread Size=10-24

V-0

Price Range
$4.68 - $4.21

Stock Levels
424 In stock
Attributes
  • Thread Size
    10-24
  • Type
    Check Nut
  • Base Diameter
    0.500 in
  • Head Height
    .156 in
  • Material
    Soft Low-Carbon Steel
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Check Nut; Base Diameter (Seed)=0.500 in, Overall Height (Seed)=.219 in, Thread Size=10-32

V-1

Price Range
$4.68 - $4.21

Stock Levels
27 In stock
Attributes
  • Thread Size
    10-32
  • Type
    Check Nut
  • Base Diameter
    0.500 in
  • Head Height
    .156 in
  • Material
    Soft Low-Carbon Steel
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Check Nut; Base Diameter (Seed)=1.00 in, Overall Height (Seed)=.44 in, Thread Size=5/8-11

KN-3

Price Range
$6.19 - $5.57

Stock Levels
38 In stock
Attributes
  • Thread Size
    5/8-11
  • Type
    Check Nut
  • Base Diameter
    1.00 in
  • Material
    Case-Hardened Steel
  • Outside Diameter
    1.375 in
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Check Nut; Base Diameter (Seed)=0.500 in, Overall Height (Seed)=.313 in, Thread Size=3/8-16

V-4

Price Range
$4.76 - $4.28

Stock Levels
92 In stock
Attributes
  • Thread Size
    3/8-16
  • Type
    Check Nut
  • Base Diameter
    0.500 in
  • Head Height
    0.250 in
  • Material
    Soft Low-Carbon Steel
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Check Nut; Base Diameter (Seed)=0.750 in, Overall Height (Seed)=0.375 in, Thread Size=1/2-13

V-5

Price Range
$5.49 - $4.94

Stock Levels
62 In stock
Attributes
  • Thread Size
    1/2-13
  • Type
    Check Nut
  • Base Diameter
    0.750 in
  • Head Height
    0.250 in
  • Material
    Soft Low-Carbon Steel
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Check Nut; Base Diameter (Seed)=0.500 in, Overall Height (Seed)=.313 in, Thread Size=5/16-18

V-3

Price Range
$4.76 - $4.28

Stock Levels
110 In stock
Attributes
  • Thread Size
    5/16-18
  • Type
    Check Nut
  • Base Diameter
    0.500 in
  • Head Height
    0.250 in
  • Material
    Soft Low-Carbon Steel
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Check Nut; Base Diameter (Seed)=0.500 in, Overall Height (Seed)=.219 in, Thread Size=1/4-20

VS-2

Price Range
$6.81 - $6.13

Stock Levels
Currently out of stock. Click here for lead time. Include your part number and qty.
Attributes
  • Thread Size
    1/4-20
  • Type
    Check Nut
  • Base Diameter
    0.500 in
  • Head Height
    .156 in
  • Material
    303 Stainless Steel
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Check Nut; Base Diameter (Seed)=0.500 in, Overall Height (Seed)=.313 in, Thread Size=5/16-18

VS-3

Price Range
$6.96 - $6.26

Stock Levels
Currently out of stock. Click here for lead time. Include your part number and qty.
Attributes
  • Thread Size
    5/16-18
  • Type
    Check Nut
  • Base Diameter
    0.500 in
  • Head Height
    0.250 in
  • Material
    303 Stainless Steel
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Check Nut; Base Diameter (Seed)=0.500 in, Overall Height (Seed)=.219 in, Thread Size=10-32

VS-1

Price Range
$6.81 - $6.13

Stock Levels
Currently out of stock. Click here for lead time. Include your part number and qty.
Attributes
  • Thread Size
    10-32
  • Type
    Check Nut
  • Base Diameter
    0.500 in
  • Head Height
    .156 in
  • Material
    303 Stainless Steel
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Machine Coupling Nut; Distance Across Flats (Seed)=0.563 in, Overall Length=22.2 mm | .875 in, Thread Size=5/16-18

CN-1

Price Range
$3.78 - $3.40

Stock Levels
140 In stock
Attributes
  • Thread Size
    5/16-18
  • Type
    Machine Coupling Nuts
  • Overall Length
    .875 in
  • Distance Across Flats
    0.563 in
  • Material
    Cold-Finished/Case-Hardened Steel
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Check Nut; Base Diameter (Seed)=0.500 in, Overall Height (Seed)=.313 in, Thread Size=3/8-16

VS-4

Price Range
$6.96 - $6.26

Stock Levels
Currently out of stock. Click here for lead time. Include your part number and qty.
Attributes
  • Thread Size
    3/8-16
  • Type
    Check Nut
  • Base Diameter
    0.500 in
  • Head Height
    0.250 in
  • Material
    303 Stainless Steel
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Check Nut; Base Diameter (Seed)=0.750 in, Overall Height (Seed)=0.375 in, Thread Size=1/2-13

VS-5

Price Range
$7.55 - $6.80

Stock Levels
43 In stock
Attributes
  • Thread Size
    1/2-13
  • Type
    Check Nut
  • Base Diameter
    0.750 in
  • Head Height
    0.250 in
  • Material
    303 Stainless Steel
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Machine Coupling Nut; Distance Across Flats (Seed)=1.063 in, Overall Length=27 mm | 1.062 in, Thread Size=5/8-11

CN-4

Price Range
$6.66 - $5.99

Stock Levels
29 In stock
Attributes
  • Thread Size
    5/8-11
  • Type
    Machine Coupling Nuts
  • Overall Length
    1.062 in
  • Distance Across Flats
    1.063 in
  • Material
    Cold-Finished/Case-Hardened Steel
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Machine Coupling Nut; Distance Across Flats (Seed)=1.250 in, Overall Length=31.8 mm | 1.250 in, Thread Size=3/4-10

CN-5

Price Range
$8.72 - $7.85

Stock Levels
123 In stock
Attributes
  • Thread Size
    3/4-10
  • Type
    Machine Coupling Nuts
  • Overall Length
    1.250 in
  • Distance Across Flats
    1.250 in
  • Material
    Cold-Finished/Case-Hardened Steel
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Machine Coupling Nut; Distance Across Flats (Seed)=0.875 in, Overall Length=38.1 mm | 1.50 in, Thread Size=1/2-13

CN-3

Price Range
$5.07 - $4.56

Stock Levels
43 In stock
Attributes
  • Thread Size
    1/2-13
  • Type
    Machine Coupling Nuts
  • Overall Length
    1.50 in
  • Distance Across Flats
    0.875 in
  • Material
    Cold-Finished/Case-Hardened Steel
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Machine Coupling Nut; Distance Across Flats (Seed)=11.5 mm, Overall Length=18.0 mm | 0.709 in, Thread Size=M6x1.00

CN-20

Price Range
$2.76 - $2.48

Stock Levels
Currently out of stock. Click here for lead time. Include your part number and qty.
Attributes
  • Thread Size
    M6x1.00
  • Type
    Machine Coupling Nuts
  • Overall Length
    0.709 in
  • Distance Across Flats
    0.453 in
  • Material
    Tempered/Case-Hardened Steel
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Machine Coupling Nut; Distance Across Flats (Seed)=15.0 mm, Overall Length=24.0 mm | 0.945 in, Thread Size=M8x1.25

CN-25

Price Range
$2.83 - $2.55

Stock Levels
7 In stock
Attributes
  • Thread Size
    M8x1.25
  • Type
    Machine Coupling Nuts
  • Overall Length
    0.945 in
  • Distance Across Flats
    0.591 in
  • Material
    Tempered/Case-Hardened Steel
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Machine Coupling Nut; Distance Across Flats (Seed)=1.500 in, Overall Length=63.5 mm | 2.500 in, Thread Size=1-8

CN-7

Price Range
$14.80 - $13.32

Stock Levels
Currently out of stock. Click here for lead time. Include your part number and qty.
Attributes
  • Thread Size
    1-8
  • Type
    Machine Coupling Nuts
  • Overall Length
    2.500 in
  • Distance Across Flats
    1.500 in
  • Material
    Cold-Finished/Case-Hardened Steel
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Machine Coupling Nut; Distance Across Flats (Seed)=21.9 mm, Overall Length=36.0 mm | 1.417 in, Thread Size=M12 x 1.75

CN-35

Price Range
$1.19 - $1.19

Stock Levels
25 In stock
Attributes
  • Thread Size
    M12 x 1.75
  • Type
    Machine Coupling Nuts
  • Overall Length
    1.417 in
  • Distance Across Flats
    0.862 in
  • Material
    Tempered/Case-Hardened Steel
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