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Thumb Screw Knobs

In stock

Thumb screw knobs can be press-fit onto screws to create a small knob for clamping or securing quickly and easily with just the thumb and forefinger.

The wide variety of thumb screw knobs we supply can be used with any length screw and come in a variety of knurling patterns or wing-tip designs. They are ideal for applications where space is restricted and fastening with a tool is not possible.

We carry thumb screws in a variety of styles, including:


The versatility of thumb screw knobs extends to overlapping styles, including knurled lobed and many others. Browse our online catalog to see every style, size, and application type of thumb screw knob available with the quickest lead times.

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52 results
Product SKUs information
Item Code Price range Availability Knob Diameter Knob Style Special Offer Brand Compatible Screw Sizes View
$0.18 - $0.18 22 In stock
1.496 in
Wing
Reid Select
$0.30 - $0.30 Request the lead time here
Knurled
Reid Select
$0.48 - $0.48 184 In stock
Knurled
Reid Select
$0.14 - $0.14 144 In stock
Knurled
Reid Select
$0.55 - $0.55 350 In stock
Knurled
Reid Select
$0.37 - $0.37 Request the lead time here
Knurled
Reid Select
$0.84 - $0.84 304 In stock
Knurled
Reid Select
$0.83 - $0.83 151 In stock
Knurled
Reid Select
$79.77 - $125.36 Request the lead time here
Knurled, Lobed, Wing
Reid Select
$1.29 - $1.29 1010 In stock
Lobed
Reid Select
$1.19 - $1.19 119 In stock
Lobed
Reid Select
$1.19 - $1.19 227 In stock
Lobed
Reid Select
$0.56 - $0.56 213 In stock
1.25 in
Wing
Reid Select
$0.65 - $0.65 Request the lead time here
1.50 in
Wing
Reid Select
$0.48 - $0.48 600 In stock
Knurled
Reid Select
$0.48 - $0.48 2697 In stock
Knurled
Reid Select
$0.34 - $0.34 79 In stock
Knurled
Reid Select
$0.37 - $0.37 Request the lead time here
Knurled
Reid Select
$0.10 - $0.10 30 In stock
Knurled
Reid Select
$0.29 - $0.29 125 In stock
Knurled
Reid Select
  • of 3
Thumb Screw Knob - Knob Diameter 38.0 mm | 1.496 in; ;

SLK-1300

Price Range
$0.18 - $0.18

Stock Levels
22 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-939B
  • Knob Diameter
    1.496 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob - Knob Diameter 7.9 mm | 0.311 in; ;

SLK-1R

Price Range
$0.30 - $0.30

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-899R
  • Color
    Red
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled
Thumb Screw Knob - Knob Diameter 12.7 mm | 0.500 in; ;

SLK-3

Price Range
$0.48 - $0.48

Stock Levels
184 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-901B
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled
Thumb Screw Knob - Knob Diameter 16.0 mm | 0.63 in; ;

SLK-400

Price Range
$0.14 - $0.14

Stock Levels
144 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-930B
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled
Thumb Screw Knob - Knob Diameter 19.1 mm | 0.752 in; ;

SLK-5

Price Range
$0.55 - $0.55

Stock Levels
350 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-903B
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled
Thumb Screw Knob - Knob Diameter 19.1 mm | 0.752 in; ;

SLK-5G

Price Range
$0.37 - $0.37

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-903G
  • Color
    Gray
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled
Thumb Screw Knob - Knob Diameter 26.0 mm | 1.024 in; ;

SLK-600

Price Range
$0.84 - $0.84

Stock Levels
304 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-932B
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled
Thumb Screw Knob - Knob Diameter 25.4 mm | 1 in; ;

SLK-7

Price Range
$0.83 - $0.83

Stock Levels
151 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-906B
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled
Thumb Screw Knob - ; ;

SLK-621

Price Range
$125.36 - $79.77

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    99-618-1
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled, Lobed, Wing
Thumb Screw Knob - Knob Diameter 38.0 mm | 1.496 in; ;

SLK-1000

Price Range
$1.29 - $1.29

Stock Levels
1010 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-936B
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Lobed
Thumb Screw Knob - Knob Diameter 38.1 mm | 1.5 in; ;

SLK-8

Price Range
$1.19 - $1.19

Stock Levels
119 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-907B
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Lobed
Thumb Screw Knob - Knob Diameter 38.0 mm | 1.496 in; ;

SLK-900

Price Range
$1.19 - $1.19

Stock Levels
227 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-935B
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Lobed
Thumb Screw Knob - Knob Diameter 31.8 mm | 1.25 in; ;

SLK-12

Price Range
$0.56 - $0.56

Stock Levels
213 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-924B
  • Knob Diameter
    1.25 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob - Knob Diameter 38.1 mm | 1.50 in; ;

SLK-13

Price Range
$0.65 - $0.65

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-925B
  • Knob Diameter
    1.50 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob - Knob Diameter 9.6 mm | 0.378 in; ;

SLK-200

Price Range
$0.48 - $0.48

Stock Levels
600 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-928B
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled
Thumb Screw Knob - Knob Diameter 12.7 mm | 0.500 in; ;

SLK-3R

Price Range
$0.48 - $0.48

Stock Levels
2697 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-901R
  • Color
    Red
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled
Thumb Screw Knob - Knob Diameter 15.9 mm | 0.626 in; ;

SLK-4R

Price Range
$0.34 - $0.34

Stock Levels
79 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-902R
  • Color
    Red
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled
Thumb Screw Knob - Knob Diameter 19.0 mm | 0.748 in; ;

SLK-500G

Price Range
$0.37 - $0.37

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-931G
  • Color
    Gray
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled
Thumb Screw Knob - Knob Diameter 19.1 mm | 0.752 in; ;

SLK-5Y

Price Range
$0.10 - $0.10

Stock Levels
30 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-903Y
  • Color
    Yellow
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled
Thumb Screw Knob - Knob Diameter 7.9 mm | 0.311 in; ;

SLK-1

Price Range
$0.29 - $0.29

Stock Levels
125 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-899B
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled