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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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81 results
Product SKUs information
Item Code Price range Availability Thread Size Special Offer Thread Type Type Brand View
$6.75 - $6.75 32 In stock
5/8-11
Check Nut
Reid Select
$12.50 - $12.50 156 In stock
10-32
Check Nut
Reid Select
$4.81 - $4.81 74 In stock
1/2-13
Machine Coupling Nuts
Reid Select
$5.41 - $5.41 115 In stock
10-24
Check Nut
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
$5.18 - $5.18 66 In stock
3/8-16
Check Nut
Reid Select
$5.84 - $5.84 37 In stock
1/2-13
Check Nut
Reid Select
$3.84 - $3.84 172 In stock
5/16-18
Machine Coupling Nuts
Reid Select
$15.63 - $15.63 Request the lead time here
3/8-16
Check Nut
Reid Select
$4.52 - $4.52 76 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
$4.95 - $4.95 120 In stock
5/16-18
Check Nut
Reid Select
$12.67 - $12.67 101 In stock
1/2-13
Check Nut
Reid Select
$9.06 - $9.06 52 In stock
1-8
Machine Coupling Nuts
Reid Select
$8.86 - $8.86 95 In stock
7/8-9
Machine Coupling Nuts
Reid Select
$4.02 - $4.02 326 In stock
1/4-20
Check Nut
Reid Select
$5.69 - $5.69 34 In stock
1/2-13
Check Nut
Reid Select
$3.66 - $3.66 30 In stock
5/8-11
Check Nut
Reid Select
  • of 5
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
32 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)=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
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
74 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
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
115 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)=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
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
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
66 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)=0.750 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
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)=0.500 in, Overall Height (Seed)=0.313 in, Thread Size=3/8-16, VS-4

VS-4

Price Range
$15.63 - $15.63

Stock Levels
Request the lead time here
Attributes
  • Thread Size
    3/8-16
  • Type
    Check Nut
  • Material
    303 Stainless 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
76 In stock
Attributes
  • Thread Size
    3/8-16
  • Type
    Check Nut
  • Material
    Soft Low-Carbon Steel
  • Finish
    Black Oxide
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
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
Check Nut; Base Diameter (Seed)=0.500 in, Overall Height (Seed)=0.313 in, Thread Size=5/16-18, V-3

V-3

Price Range
$4.95 - $4.95

Stock Levels
120 In stock
Attributes
  • Thread Size
    5/16-18
  • Type
    Check Nut
  • Material
    Soft Low-Carbon Steel
  • Finish
    Black Oxide
Check Nut; Base Diameter (Seed)=0.750 in, Overall Height (Seed)=0.375 in, Thread Size=1/2-13, VS-5

VS-5

Price Range
$12.67 - $12.67

Stock Levels
101 In stock
Attributes
  • Thread Size
    1/2-13
  • Type
    Check Nut
  • Material
    303 Stainless Steel
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
52 In stock
Attributes
  • Thread Size
    1-8
  • Type
    Machine Coupling Nuts
  • Material
    Cold-Finished/Case-Hardened Steel
  • Finish
    Black Oxide
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
Check Nut; Base Diameter (Seed)=0.500 in, Overall Height (Seed)=0.219 in, Thread Size=1/4-20, V-2

V-2

Price Range
$4.02 - $4.02

Stock Levels
326 In stock
Attributes
  • Thread Size
    1/4-20
  • Type
    Check Nut
  • Material
    Soft Low-Carbon Steel
  • Finish
    Black Oxide
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
34 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
30 In stock
Attributes
  • Thread Size
    5/8-11
  • Type
    Check Nut
  • Material
    Soft Low-Carbon Steel
  • Finish
    Black Oxide