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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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35 results
Product SKUs information
Item Code Price range Availability Thread Size Distance Across Flats Outside Diameter Overall Height View
$0.7749 - $1.1811 500 In stock
1-11-1/2
1.656 in
1.844 in
0.313 in
$0.2386 - $0.2783 1000 In stock
3/8-16
0.670 in
0.670 in
0.219 in
$0.1593 - $0.1857 1000 In stock
7/16-14
0.687 in
0.687 in
0.375 in
$0.2137 - $0.3257 500 In stock
1/4-18 NPT
0.74 in
0.740 in
0.187 in
$0.1877 - $0.219 1000 In stock
1/2-28
0.660 in
0.660 in
0.125 in
$0.698 - $1.0639 4250 In stock
3/4-14 NPT
1.48 in
1.480 in
0.410 in
$0.9642 - $1.4695 500 In stock
1-1/4-11-1/2
2.125 in
2.344 in
0.375 in
0425020HJN $0.0936 - $0.103 38000 In stock
1/4-20
0.437 in
0.437 in
0.158 in
$0.547 - $0.8338 500 In stock
3/8-18 NPT
1.00 in
1.000 in
0.280 in
$0.1524 - $0.1777 4000 In stock
7/16-20
0.687 in
0.687 in
0.250 in
0450020HJN $0.1877 - $0.219 1000 In stock
1/2-20
0.687 in
0.687 in
0.220 in
$0.1876 - $0.2188 2000 In stock
9/16-24
0.750 in
0.750 in
0.250 in
$0.5565 - $0.6492 1000 In stock
3/4-27
1.00 in
1.000 in
0.125 in
0425018SJN $0.1225 - $0.1866 5000 In stock
1/4-18 NPS
0.687 in
0.687 in
0.225 in
$0.569 - $0.8672 4500 In stock
1/2-14 NPS
1.25 in
1.250 in
0.340 in
$0.1988 - $0.2188 3000 In stock
9/16-18
0.750 in
0.750 in
0.250 in
0475014SJN $0.7295 - $1.1118 10000 In stock
3/4-14 NPS
1.48 in
1.480 in
0.410 in
$0.0938 - $0.1096 1000 In stock
5/16-24
0.500 in
0.500 in
0.190 in
$0.1308 - $0.1525 16000 In stock
3/8-32
0.5 in
0.5 in
0.126 in
$0.569 - $0.8672 1000 In stock
1/2-14 NPT
1.25 in
1.250 in
0.340 in
  • of 2
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
$1.1811 - $0.7749

Stock Levels
500 In stock
Attributes
  • Distance Across Flats
    1.656 in
  • Overall Height
    0.313 in
  • Thread Size
    1-11-1/2
  • Outside Diameter
    1.844 in
  • Material
    PA
Natural PA Hexagonal Standard Hex Nut - Thread Size 3/8-16; Distance Across Flats 17 mm | 0.670 in; Overall Height 5.5 mm | 0.218 in

0437516HHJN

Price Range
$0.2783 - $0.2386

Stock Levels
1000 In stock
Attributes
  • Distance Across Flats
    0.670 in
  • Overall Height
    0.219 in
  • Thread Size
    3/8-16
  • Outside Diameter
    0.670 in
  • Material
    PA
Natural PA Hexagonal Standard Hex 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
$0.1857 - $0.1593

Stock Levels
1000 In stock
Attributes
  • Distance Across Flats
    0.687 in
  • Overall Height
    0.375 in
  • Thread Size
    7/16-14
  • Outside Diameter
    0.687 in
  • Material
    PA
Natural PA Hexagonal Standard Hex Nut - Thread Size 1/4-18 NPT; Distance Across Flats 18.8 mm | 0.740 in; Overall Height 4.7 mm | 0.187 in

0425018PJN

Price Range
$0.3257 - $0.2137

Stock Levels
500 In stock
Attributes
  • Distance Across Flats
    0.74 in
  • Overall Height
    0.187 in
  • Thread Size
    1/4-18 NPT
  • Outside Diameter
    0.740 in
  • Material
    PA
Natural PA Hexagonal Standard Hex 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
$0.219 - $0.1877

Stock Levels
1000 In stock
Attributes
  • Distance Across Flats
    0.660 in
  • Overall Height
    0.125 in
  • Thread Size
    1/2-28
  • Outside Diameter
    0.660 in
  • Material
    PA
Natural PA Hexagonal Standard Hex Nut - Thread Size 3/4-14 NPT; Distance Across Flats 37.6 mm | 1.480 in; Overall Height 10.4 mm | 0.410 in

0475014PJN

Price Range
$1.0639 - $0.698

Stock Levels
4250 In stock
Attributes
  • Distance Across Flats
    1.48 in
  • Overall Height
    0.410 in
  • Thread Size
    3/4-14 NPT
  • Outside Diameter
    1.480 in
  • Material
    PA
Natural PA Hexagonal Standard Hex Nut - Thread Size 1-1/4-11-1/2; Distance Across Flats 54 mm | 2.125 in; Overall Height 9.5 mm | 0.375 in

0412511PJN

Price Range
$1.4695 - $0.9642

Stock Levels
500 In stock
Attributes
  • Distance Across Flats
    2.125 in
  • Overall Height
    0.375 in
  • Thread Size
    1-1/4-11-1/2
  • Outside Diameter
    2.344 in
  • Material
    PA
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
$0.103 - $0.0936

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
    PA
Natural PA Hexagonal Standard Hex Nut - Thread Size 3/8-18 NPT; Distance Across Flats 25.4 mm | 1.00 in; Overall Height 7.1 mm | 0.280 in

0437518PJN

Price Range
$0.8338 - $0.547

Stock Levels
500 In stock
Attributes
  • Distance Across Flats
    1.00 in
  • Overall Height
    0.280 in
  • Thread Size
    3/8-18 NPT
  • Outside Diameter
    1.000 in
  • Material
    PA
Natural PA Hexagonal Standard Hex 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
$0.1777 - $0.1524

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
    PA
Natural PA Hexagonal Standard Hex 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
$0.219 - $0.1877

Stock Levels
1000 In stock
Attributes
  • Distance Across Flats
    0.687 in
  • Overall Height
    0.220 in
  • Thread Size
    1/2-20
  • Outside Diameter
    0.687 in
  • Material
    PA
Natural PA Hexagonal Standard Hex Nut - Thread Size 9/16-24; Distance Across Flats 19.1 mm | 0.750 in; Overall Height 6.4 mm | 0.250 in

0456224HJN

Price Range
$0.2188 - $0.1876

Stock Levels
2000 In stock
Attributes
  • Distance Across Flats
    0.750 in
  • Overall Height
    0.250 in
  • Thread Size
    9/16-24
  • Outside Diameter
    0.750 in
  • Material
    PA
Natural PA Hexagonal Standard Hex Nut - Thread Size 3/4-27; Distance Across Flats 25.4 mm | 1.00 in; Overall Height 3.2 mm | 0.125 in

0475027HJN

Price Range
$0.6492 - $0.5565

Stock Levels
1000 In stock
Attributes
  • Distance Across Flats
    1.00 in
  • Overall Height
    0.125 in
  • Thread Size
    3/4-27
  • Outside Diameter
    1.000 in
  • Material
    PA
Natural PA Hexagonal Standard Hex 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
$0.1866 - $0.1225

Stock Levels
5000 In stock
Attributes
  • Distance Across Flats
    0.687 in
  • Overall Height
    0.225 in
  • Thread Size
    1/4-18 NPS
  • Outside Diameter
    0.687 in
  • Material
    PA
Natural PA Hexagonal Standard Hex 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
$0.8672 - $0.569

Stock Levels
4500 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
    PA
Natural PA Hexagonal Standard Hex 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
$0.2188 - $0.1988

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
    PA
Natural PA Hexagonal Standard Hex 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
$1.1118 - $0.7295

Stock Levels
10000 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
    PA
Natural PA Hexagonal Standard Hex 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
$0.1096 - $0.0938

Stock Levels
1000 In stock
Attributes
  • Distance Across Flats
    0.500 in
  • Overall Height
    0.190 in
  • Thread Size
    5/16-24
  • Outside Diameter
    0.500 in
  • Material
    PA
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
$0.1525 - $0.1308

Stock Levels
16000 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 PA Hexagonal Standard Hex 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
$0.8672 - $0.569

Stock Levels
1000 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
    PA
Natural PA Hexagonal Standard Hex Nut - Thread Size 1/8-27 NPT; Distance Across Flats 14.2 mm | 0.560 in; Overall Height 2.8 mm | 0.11 in

0412527PJN

Price Range
$0.139 - $0.1192

Stock Levels
23000 In stock
Attributes
  • Distance Across Flats
    0.560 in
  • Overall Height
    0.11 in
  • Thread Size
    1/8-27 NPT
  • Outside Diameter
    0.560 in
  • Material
    PA
Natural PA Hexagonal Standard Hex 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
$0.1152 - $0.0988

Stock Levels
5000 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
    PA
Natural PA Hexagonal Standard Hex 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
$0.8338 - $0.547

Stock Levels
500 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
    PA
Natural PA Hexagonal Standard Hex Nut - Thread Size 15/32-32; Distance Across Flats 15.9 mm | 0.625 in; Overall Height 3.2 mm | 0.125 in

0446832HJN

Price Range
$0.324 - $0.2777

Stock Levels
1000 In stock
Attributes
  • Distance Across Flats
    0.625 in
  • Overall Height
    0.125 in
  • Thread Size
    15/32-32
  • Outside Diameter
    0.625 in
  • Material
    PA
Natural PA Hexagonal Standard Hex Nut - Thread Size 1/2-24; Distance Across Flats 17.4 mm | 0.687 in; Overall Height 5.6 mm | 0.220 in

0450024HJN

Price Range
$0.219 - $0.1877

Stock Levels
14000 In stock
Attributes
  • Distance Across Flats
    0.687 in
  • Overall Height
    0.220 in
  • Thread Size
    1/2-24
  • Outside Diameter
    0.687 in
  • Material
    PA
Natural PA Hexagonal Standard Hex Nut - Thread Size 3/4-10; Distance Across Flats 28.4 mm | 1.12 in; Overall Height 6.4 mm | 0.250 in

0475010HJN

Price Range
$0.4185 - $0.2746

Stock Levels
7500 In stock
Attributes
  • Distance Across Flats
    1.12 in
  • Overall Height
    0.250 in
  • Thread Size
    3/4-10
  • Outside Diameter
    1.120 in
  • Material
    PA
Natural PA Hexagonal Standard Hex 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
$0.509 - $0.4362

Stock Levels
1000 In stock
Attributes
  • Distance Across Flats
    1.00 in
  • Overall Height
    0.125 in
  • Thread Size
    7/8-20
  • Outside Diameter
    1.000 in
  • Material
    PA
Natural PA Hexagonal Standard Hex Nut - Thread Size 1/2-13; Distance Across Flats 17.4 mm | 0.687 in; Overall Height 5.6 mm | 0.220 in

0450013HJN

Price Range
$0.2096 - $0.1797

Stock Levels
9000 In stock
Attributes
  • Distance Across Flats
    0.687 in
  • Overall Height
    0.220 in
  • Thread Size
    1/2-13
  • Outside Diameter
    0.687 in
  • Material
    PA
Natural PA Hexagonal Standard Hex Nut - Thread Size 7/8-14; Distance Across Flats 31.8 mm | 1.250 in; Overall Height 8.6 mm | 0.340 in

0487514HJN

Price Range
$0.4511 - $0.2959

Stock Levels
5000 In stock
Attributes
  • Distance Across Flats
    1.25 in
  • Overall Height
    0.340 in
  • Thread Size
    7/8-14
  • Outside Diameter
    1.250 in
  • Material
    PA
Natural PA Hexagonal Standard Hex Nut - Thread Size 1-8; Distance Across Flats 37.6 mm | 1.48 in; Overall Height 10.4 mm | 0.410 in

0410008HJN

Price Range
$0.6768 - $0.4441

Stock Levels
3000 In stock
Attributes
  • Distance Across Flats
    1.48 in
  • Overall Height
    0.410 in
  • Thread Size
    1-8
  • Outside Diameter
    1.480 in
  • Material
    PA
Natural PA Hexagonal Standard Hex Nut - Thread Size 5/8-11; Distance Across Flats 23.8 mm | 0.937 in; Overall Height 9.5 mm | 0.375 in

0462511HJN

Price Range
$0.3118 - $0.2046

Stock Levels
500 In stock
Attributes
  • Distance Across Flats
    0.937 in
  • Overall Height
    0.375 in
  • Thread Size
    5/8-11
  • Outside Diameter
    0.937 in
  • Material
    PA
Natural PA Hexagonal Standard Hex Nut - Thread Size 3/8-24; Distance Across Flats 12.7 mm | 0.500 in; Overall Height 3.2 mm | 0.125 in

0437524HJN

Price Range
$0.1459 - $0.125

Stock Levels
3000 In stock
Attributes
  • Distance Across Flats
    0.500 in
  • Overall Height
    0.125 in
  • Thread Size
    3/8-24
  • Outside Diameter
    0.500 in
  • Material
    PA
Natural PA Hexagonal Standard Hex Nut - Thread Size 3/4-16; Distance Across Flats 28.4 mm | 1.12 in; Overall Height 6.4 mm | 0.250 in

0475016HJN

Price Range
$0.5822 - $0.382

Stock Levels
In production
Attributes
  • Distance Across Flats
    1.12 in
  • Overall Height
    0.250 in
  • Thread Size
    3/4-16
  • Outside Diameter
    1.120 in
  • Material
    PA
Natural PA Hexagonal Standard Hex Nut - Thread Size 3/8-16; Distance Across Flats 12.7 mm | 0.500 in; Overall Height 3.2 mm | 0.125 in

0437516HJN

Price Range
$0.1525 - $0.1387

Stock Levels
8000 In stock
Attributes
  • Distance Across Flats
    0.500 in
  • Overall Height
    0.125 in
  • Thread Size
    3/8-16
  • Outside Diameter
    0.500 in
  • Material
    PA
Natural PA Hexagonal Standard Hex Nut - Thread Size 5/8-18; Distance Across Flats 23.8 mm | 0.937 in; Overall Height 9.5 mm | 0.375 in

0462518HJN

Price Range
$0.2679 - $0.1758

Stock Levels
500 In stock
Attributes
  • Distance Across Flats
    0.937 in
  • Overall Height
    0.375 in
  • Thread Size
    5/8-18
  • Outside Diameter
    0.937 in
  • Material
    PA