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Jam Nuts

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Jam Nuts, also know as Thin Hex Nuts, are a low-profile type of nut. Typically they are half as tall as a standard nut. It is commonly used as a type of locknut, where it is 'jammed' up against a standard nut to lock the two in place or where a standard nut will not fit. These light-weight nylon versions offer a vibration-, chemical- and corrosion-resistant option to metal variants.

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Product SKUs information
Item Code Price range Availability Thread Size Distance Across Flats Outside Diameter Buy
$0.1548 - $0.1805 In production
7/16-14
0.687 in
0.687 in
$0.1271 - $0.1482 15000 In stock
3/8-32
0.5 in
0.5 in
0475014SJN $1.0954 - $2.4941 5000 In stock
3/4-14 NPS
1.48 in
1.480 in
0425018SJN $0.1839 - $0.4187 In production
1/4-18 NPS
0.687 in
0.687 in
$0.3209 - $0.7307 In production
1/4-18 NPT
0.74 in
0.740 in
0450020HJN $0.1824 - $0.2128 In production
1/2-20
0.687 in
0.687 in
$1.1637 - $2.6495 In production
1-11-1/2 NPT
1.656 in
1.844 in
$0.8544 - $1.9454 5500 In stock
1/2-14 NPS
1.25 in
1.250 in
$0.1824 - $0.2128 In production
1/2-28
0.660 in
0.660 in
$0.0912 - $0.1065 In production
5/16-24
0.500 in
0.500 in
$0.8544 - $1.9454 500 In stock
1/2-14 NPT
1.25 in
1.250 in
$1.0482 - $2.3867 In production
3/4-14 NPT
1.48 in
1.480 in
$1.4477 - $3.2966 In production
1-1/4-11-1/2 NPT
2.125 in
2.344 in
$0.096 - $0.112 6000 In stock
5/16-18
0.500 in
0.500 in
0425020HJN $0.091 - $0.1001 38000 In stock
1/4-20
0.437 in
0.437 in
$0.2319 - $0.2705 In production
3/8-16
0.670 in
0.670 in
$0.1932 - $0.2126 3000 In stock
9/16-18
0.750 in
0.750 in
$0.4239 - $0.4947 In production
7/8-20
1.00 in
1.000 in
$0.8216 - $1.8704 1000 In stock
3/8-18 NPS
1.00 in
1.000 in
$0.1481 - $0.1727 4000 In stock
7/16-20
0.687 in
0.687 in
  • of 2
Natural Nylon Hexagonal Jam Nut - Thread Size 7/16-14; Distance Across Flats 17.4 mm | 0.687 in; Overall Height 9.5 mm | 0.375 in

0443714HJN

Price Range
$0.1805 - $0.1548

Stock Levels
In production
Attributes
  • Distance Across Flats
    0.687 in
  • Overall Height
    0.375 in
  • Thread Size
    7/16-14
  • Outside Diameter
    0.687 in
  • Material
    Nylon
Natural PA Hexagonal Standard Hex Nut - Thread Size 3/8-32; Distance Across Flats 12.7 mm | 0.5 in; Overall Height 3.2 mm | 0.126 in

0437532HJN

Price Range
$0.1482 - $0.1271

Stock Levels
15000 In stock
Attributes
  • Distance Across Flats
    0.5 in
  • Overall Height
    0.126 in
  • Thread Size
    3/8-32
  • Outside Diameter
    0.5 in
  • Material
    PA
Natural Nylon Hexagonal Jam Nut - Thread Size 7/16-20; Distance Across Flats 17.4 mm | 0.687 in; Overall Height 6.4 mm | 0.250 in

0443720HJN

Price Range
$0.1727 - $0.1481

Stock Levels
4000 In stock
Attributes
  • Distance Across Flats
    0.687 in
  • Overall Height
    0.250 in
  • Thread Size
    7/16-20
  • Outside Diameter
    0.687 in
  • Material
    Nylon
Natural Nylon Hexagonal Jam Nut - Thread Size 1/2-14 NPS; Distance Across Flats 31.8 mm | 1.25 in; Overall Height 8.6 mm | 0.340 in

0450014SJN

Price Range
$1.9454 - $0.8544

Stock Levels
5500 In stock
Attributes
  • Distance Across Flats
    1.25 in
  • Overall Height
    0.340 in
  • Thread Size
    1/2-14 NPS
  • Outside Diameter
    1.250 in
  • Material
    Nylon
Natural Nylon Hexagonal Jam Nut - Thread Size 1/2-14 NPT; Distance Across Flats 31.8 mm | 1.25 in; Overall Height 8.6 mm | 0.340 in

0450014PJN

Price Range
$1.9454 - $0.8544

Stock Levels
500 In stock
Attributes
  • Distance Across Flats
    1.25 in
  • Overall Height
    0.340 in
  • Thread Size
    1/2-14 NPT
  • Outside Diameter
    1.250 in
  • Material
    Nylon
Natural Nylon Hexagonal Jam Nut - Thread Size 1/2-20; Distance Across Flats 17.4 mm | 0.687 in; Overall Height 5.6 mm | 0.220 in

0450020HJN

Price Range
$0.2128 - $0.1824

Stock Levels
In production
Attributes
  • Distance Across Flats
    0.687 in
  • Overall Height
    0.220 in
  • Thread Size
    1/2-20
  • Outside Diameter
    0.687 in
  • Material
    Nylon
Natural Nylon Hexagonal Jam Nut - Thread Size 9/16-18; Distance Across Flats 19.1 mm | 0.750 in; Overall Height 6.4 mm | 0.250 in

0456218HJN

Price Range
$0.2126 - $0.1932

Stock Levels
3000 In stock
Attributes
  • Distance Across Flats
    0.750 in
  • Overall Height
    0.250 in
  • Thread Size
    9/16-18
  • Outside Diameter
    0.750 in
  • Material
    Nylon
Natural Nylon Hexagonal Jam Nut - Thread Size 1/2-28; Distance Across Flats 16.8 mm | 0.660 in; Overall Height 3.2 mm | 0.125 in

0450028HJN

Price Range
$0.2128 - $0.1824

Stock Levels
In production
Attributes
  • Distance Across Flats
    0.660 in
  • Overall Height
    0.125 in
  • Thread Size
    1/2-28
  • Outside Diameter
    0.660 in
  • Material
    Nylon
Natural Nylon Hexagonal Jam Nut - Thread Size 3/4-14 NPS; Distance Across Flats 37.6 mm | 1.48 in; Overall Height 10.4 mm | 0.410 in

0475014SJN

Price Range
$2.4941 - $1.0954

Stock Levels
5000 In stock
Attributes
  • Distance Across Flats
    1.48 in
  • Overall Height
    0.410 in
  • Thread Size
    3/4-14 NPS
  • Outside Diameter
    1.480 in
  • Material
    Nylon
Natural Nylon Hexagonal Jam Nut - Thread Size 3/4-14 NPT; Distance Across Flats 37.6 mm | 1.48 in; Overall Height 10.4 mm | 0.410 in

0475014PJN

Price Range
$2.3867 - $1.0482

Stock Levels
In production
Attributes
  • Distance Across Flats
    1.48 in
  • Overall Height
    0.410 in
  • Thread Size
    3/4-14 NPT
  • Outside Diameter
    1.480 in
  • Material
    Nylon
Natural Nylon Hexagonal Jam Nut - Thread Size 7/8-20; Distance Across Flats 25.4 mm | 1.00 in; Overall Height 3.2 mm | 0.125 in

0487520HJN

Price Range
$0.4947 - $0.4239

Stock Levels
In production
Attributes
  • Distance Across Flats
    1.00 in
  • Overall Height
    0.125 in
  • Thread Size
    7/8-20
  • Outside Diameter
    1.000 in
  • Material
    Nylon
Natural Nylon Hexagonal Jam Nut - Thread Size 1-11-1/2 NPT; Distance Across Flats 42.1 mm | 1.656 in; Overall Height 8 mm | 0.313 in

0410011PJN

Price Range
$2.6495 - $1.1637

Stock Levels
In production
Attributes
  • Distance Across Flats
    1.656 in
  • Overall Height
    0.313 in
  • Thread Size
    1-11-1/2 NPT
  • Outside Diameter
    1.844 in
  • Material
    Nylon
Natural Nylon Hexagonal Jam Nut - Thread Size 1-1/4-11-1/2 NPT; Distance Across Flats 54 mm | 2.125 in; Overall Height 9.5 mm | 0.375 in

0412511PJN

Price Range
$3.2966 - $1.4477

Stock Levels
In production
Attributes
  • Distance Across Flats
    2.125 in
  • Overall Height
    0.375 in
  • Thread Size
    1-1/4-11-1/2 NPT
  • Outside Diameter
    2.344 in
  • Material
    Nylon
Natural Nylon Hexagonal Jam Nut - Thread Size 1/4-18 NPS; Distance Across Flats 17.4 mm | 0.687 in; Overall Height 5.7 mm | 0.225 in

0425018SJN

Price Range
$0.4187 - $0.1839

Stock Levels
In production
Attributes
  • Distance Across Flats
    0.687 in
  • Overall Height
    0.225 in
  • Thread Size
    1/4-18 NPS
  • Outside Diameter
    0.687 in
  • Material
    Nylon
Natural Nylon Hexagonal Jam Nut - Thread Size 1/4-18 NPT; Distance Across Flats 18.8 mm | 0.74 in; Overall Height 4.7 mm | 0.187 in

0425018PJN

Price Range
$0.7307 - $0.3209

Stock Levels
In production
Attributes
  • Distance Across Flats
    0.74 in
  • Overall Height
    0.187 in
  • Thread Size
    1/4-18 NPT
  • Outside Diameter
    0.740 in
  • Material
    Nylon
Natural Nylon Hexagonal Jam Nut - Thread Size 5/16-18; Distance Across Flats 12.7 mm | 0.500 in; Overall Height 4.8 mm | 0.190 in

0431218HJN

Price Range
$0.112 - $0.096

Stock Levels
6000 In stock
Attributes
  • Distance Across Flats
    0.500 in
  • Overall Height
    0.190 in
  • Thread Size
    5/16-18
  • Outside Diameter
    0.500 in
  • Material
    Nylon
Natural Nylon Hexagonal Jam Nut - Thread Size 1/4-20; Distance Across Flats 11.1 mm | 0.437 in; Overall Height 4 mm | 0.158 in

0425020HJN

Price Range
$0.1001 - $0.091

Stock Levels
38000 In stock
Attributes
  • Distance Across Flats
    0.437 in
  • Overall Height
    0.158 in
  • Thread Size
    1/4-20
  • Outside Diameter
    0.437 in
  • Material
    Nylon
Natural Nylon Hexagonal Jam Nut - Thread Size 3/8-16; Distance Across Flats 17 mm | 0.670 in; Overall Height 5.6 mm | 0.219 in

0437516HHJN

Price Range
$0.2705 - $0.2319

Stock Levels
In production
Attributes
  • Distance Across Flats
    0.670 in
  • Overall Height
    0.219 in
  • Thread Size
    3/8-16
  • Outside Diameter
    0.670 in
  • Material
    Nylon
Natural Nylon Hexagonal Jam Nut - Thread Size 5/16-24; Distance Across Flats 12.7 mm | 0.500 in; Overall Height 4.8 mm | 0.190 in

0431224HJN

Price Range
$0.1065 - $0.0912

Stock Levels
In production
Attributes
  • Distance Across Flats
    0.500 in
  • Overall Height
    0.190 in
  • Thread Size
    5/16-24
  • Outside Diameter
    0.500 in
  • Material
    Nylon
Natural Nylon Hexagonal Jam Nut - Thread Size 3/8-18 NPS; Distance Across Flats 25.4 mm | 1.00 in; Overall Height 7.1 mm | 0.280 in

0437518SJN

Price Range
$1.8704 - $0.8216

Stock Levels
1000 In stock
Attributes
  • Distance Across Flats
    1.00 in
  • Overall Height
    0.280 in
  • Thread Size
    3/8-18 NPS
  • Outside Diameter
    1.000 in
  • Material
    Nylon