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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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99 results
Product SKUs information
Item Code Price range Availability Thread Size Special Offer Thread Type Type Brand View
$9.06 - $9.06 86 In stock
1-8
Machine Coupling Nuts
Reid Select
$5.84 - $5.84 37 In stock
1/2-13
Check Nut
Reid Select
$12.50 - $12.50 156 In stock
10-32
Check Nut
Reid Select
$4.81 - $4.81 Request the lead time here
1/2-13
Machine Coupling Nuts
Reid Select
$5.18 - $5.18 55 In stock
3/8-16
Check Nut
Reid Select
$5.25 - $5.25 40 In stock
10-32
Check Nut
Reid Select
$9.67 - $9.67 Request the lead time here
5/16-18
Check Nut
Reid Select
$3.84 - $3.84 172 In stock
5/16-18
Machine Coupling Nuts
Reid Select
$6.75 - $6.75 29 In stock
5/8-11
Check Nut
Reid Select
$5.41 - $5.41 113 In stock
10-24
Check Nut
Reid Select
$5.69 - $5.69 18 In stock
1/2-13
Check Nut
Reid Select
$3.66 - $3.66 10 In stock
5/8-11
Check Nut
Reid Select
$4.57 - $4.57 81 In stock
3/8-16
Machine Coupling Nuts
Reid Select
$4.52 - $4.52 73 In stock
3/8-16
Check Nut
Reid Select
$3.84 - $3.84 57 In stock
1/4-20
Machine Coupling Nuts
Reid Select
$3.35 - $3.35 Request the lead time here
M6x1.00
Machine Coupling Nuts
AMF
$26.73 - $26.73 118 In stock
3/4-10
Machine Coupling Nuts
Reid Select
$12.48 - $12.48 Request the lead time here
1/4-20
Check Nut
Reid Select
$4.46 - $4.46 27 In stock
5/8-11
Machine Coupling Nuts
Reid Select
$8.86 - $8.86 95 In stock
7/8-9
Machine Coupling Nuts
Reid Select
  • of 5
Machine Coupling Nut; Distance Across Flats (Seed)=1.500 in, Overall Length=63.5 mm | 2.500 in, Thread Size=1-8, CN-7

CN-7

Price Range
$9.06 - $9.06

Stock Levels
86 In stock
Attributes
  • Thread Size
    1-8
  • Type
    Machine Coupling Nuts
  • Material
    Cold-Finished/Case-Hardened Steel
  • Finish
    Black Oxide
  • Manufacturer Part Number
    HN-7
Check Nut; Base Diameter (Seed)=0.750 in, Overall Height (Seed)=0.375 in, Thread Size=1/2-13, V-5

V-5

Price Range
$5.84 - $5.84

Stock Levels
37 In stock
Attributes
  • Thread Size
    1/2-13
  • Type
    Check Nut
  • Material
    Soft Low-Carbon Steel
  • Finish
    Black Oxide
  • Manufacturer Part Number
    T106CN BULK
Check Nut; Base Diameter (Seed)=0.500 in, Overall Height (Seed)=0.219 in, Thread Size=10-32, VS-1

VS-1

Price Range
$12.50 - $12.50

Stock Levels
156 In stock
Attributes
  • Thread Size
    10-32
  • Type
    Check Nut
  • Material
    303 Stainless Steel
  • Manufacturer Part Number
    VS-1
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
$4.81 - $4.81

Stock Levels
Request the lead time here
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
Check Nut; Base Diameter (Seed)=1.00 in, Overall Height (Seed)=.44 in, Thread Size=3/8-16

KN-1

Price Range
$5.18 - $5.18

Stock Levels
55 In stock
Attributes
  • Thread Size
    3/8-16
  • Type
    Check Nut
  • Base Diameter
    1.00 in
  • Material
    Case-Hardened Steel
  • Outside Diameter
    1.125 in
Check Nut; Base Diameter (Seed)=0.500 in, Overall Height (Seed)=0.219 in, Thread Size=10-32, V-1

V-1

Price Range
$5.25 - $5.25

Stock Levels
40 In stock
Attributes
  • Thread Size
    10-32
  • Type
    Check Nut
  • Material
    Soft Low-Carbon Steel
  • Finish
    Black Oxide
  • Manufacturer Part Number
    V-1
Check Nut; Base Diameter (Seed)=0.500 in, Overall Height (Seed)=0.313 in, Thread Size=5/16-18, VS-3

VS-3

Price Range
$9.67 - $9.67

Stock Levels
Request the lead time here
Attributes
  • Thread Size
    5/16-18
  • Type
    Check Nut
  • Material
    303 Stainless Steel
  • Manufacturer Part Number
    VS-3
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
$3.84 - $3.84

Stock Levels
172 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
Check Nut; Base Diameter (Seed)=1.00 in, Overall Height (Seed)=.44 in, Thread Size=5/8-11

KN-3

Price Range
$6.75 - $6.75

Stock Levels
29 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
Check Nut; Base Diameter (Seed)=0.500 in, Overall Height (Seed)=.219 in, Thread Size=10-24

V-0

Price Range
$5.41 - $5.41

Stock Levels
113 In stock
Attributes
  • Thread Size
    10-24
  • Type
    Check Nut
  • Base Diameter
    0.500 in
  • Head Height
    .156 in
  • Material
    Soft Low-Carbon Steel
Check Nut; Base Diameter (Seed)=1.00 in, Overall Height (Seed)=.44 in, Thread Size=1/2-13

KN-2

Price Range
$5.69 - $5.69

Stock Levels
18 In stock
Attributes
  • Thread Size
    1/2-13
  • Type
    Check Nut
  • Base Diameter
    1.00 in
  • Material
    Case-Hardened Steel
  • Outside Diameter
    1.125 in
Check Nut; Base Diameter (Seed)=0.750 in, Overall Height (Seed)=0.375 in, Thread Size=5/8-11, V-6

V-6

Price Range
$3.66 - $3.66

Stock Levels
10 In stock
Attributes
  • Thread Size
    5/8-11
  • Type
    Check Nut
  • Material
    Soft Low-Carbon Steel
  • Finish
    Black Oxide
  • Manufacturer Part Number
    T108CN
Machine Coupling Nut; Distance Across Flats (Seed)=1.063 in, Overall Length=17.5 mm | .688 in, Thread Size=3/8-16

CN-2

Price Range
$4.57 - $4.57

Stock Levels
81 In stock
Attributes
  • Thread Size
    3/8-16
  • Type
    Machine Coupling Nuts
  • Overall Length
    .688 in
  • Distance Across Flats
    1.063 in
  • Material
    Cold-Finished/Case-Hardened Steel
Check Nut; Base Diameter (Seed)=0.500 in, Overall Height (Seed)=0.313 in, Thread Size=3/8-16, V-4

V-4

Price Range
$4.52 - $4.52

Stock Levels
73 In stock
Attributes
  • Thread Size
    3/8-16
  • Type
    Check Nut
  • Material
    Soft Low-Carbon Steel
  • Finish
    Black Oxide
  • Manufacturer Part Number
    T104CN BULK
Machine Coupling Nut; Distance Across Flats (Seed)=0.563 in, Overall Length=22.2 mm | .875 in, Thread Size=1/4-20, CN-0

CN-0

Price Range
$3.84 - $3.84

Stock Levels
57 In stock
Attributes
  • Thread Size
    1/4-20
  • Type
    Machine Coupling Nuts
  • Material
    Cold-Finished/Case-Hardened Steel
  • Finish
    Black Oxide
  • Manufacturer Part Number
    HN-0
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
$3.35 - $3.35

Stock Levels
Request the lead time here
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
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
$26.73 - $26.73

Stock Levels
118 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
Check Nut; Base Diameter (Seed)=0.500 in, Overall Height (Seed)=0.219 in, Thread Size=1/4-20, VS-2

VS-2

Price Range
$12.48 - $12.48

Stock Levels
Request the lead time here
Attributes
  • Thread Size
    1/4-20
  • Type
    Check Nut
  • Material
    303 Stainless Steel
  • Manufacturer Part Number
    VS-2
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
$4.46 - $4.46

Stock Levels
27 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
Machine Coupling Nut; Distance Across Flats (Seed)=1.375 in, Overall Length=34.9 mm | 1.375 in, Thread Size=7/8-9

CN-6

Price Range
$8.86 - $8.86

Stock Levels
95 In stock
Attributes
  • Thread Size
    7/8-9
  • Type
    Machine Coupling Nuts
  • Overall Length
    1.375 in
  • Distance Across Flats
    1.375 in
  • Material
    Cold-Finished/Case-Hardened Steel