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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
$0.29 - $0.29 125 In stock
Knurled
Reid Select
$0.56 - $0.56 243 In stock
1.25 in
Wing
Reid Select
$0.65 - $0.65 Request the lead time here
1.50 in
Wing
Reid Select
$0.14 - $0.14 9 In stock
Knurled
Reid Select
$0.48 - $0.48 109 In stock
Knurled
Reid Select
$0.48 - $0.48 816 In stock
Knurled
Reid Select
$0.48 - $0.48 Request the lead time here
Knurled
Reid Select
$0.15 - $0.15 51 In stock
Knurled
Reid Select
$0.53 - $0.53 Request the lead time here
Knurled
Reid Select
$80.30 - $126.19 2 In stock
Knurled, Lobed, Wing
Reid Select
$1.29 - $1.29 196 In stock
Lobed
Reid Select
$0.55 - $0.55 550 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 - $1.19 227 In stock
Lobed
Reid Select
$0.31 - $0.31 Request the lead time here
Knurled
Reid Select
$0.38 - $0.38 106 In stock
L-Knob
Reid Select
  • of 3
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
Thumb Screw Knob - Knob Diameter 31.8 mm | 1.25 in; ;

SLK-12

Price Range
$0.56 - $0.56

Stock Levels
243 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 25.4 mm | 1 in; ;

SLK-6R

Price Range
$0.14 - $0.14

Stock Levels
9 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-904R
  • Color
    Red
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled
Thumb Screw Knob - Knob Diameter 9.5 mm | 0.374 in; ;

SLK-2R

Price Range
$0.48 - $0.48

Stock Levels
109 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-900R
  • Color
    Red
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled
Thumb Screw Knob - Knob Diameter 15.9 mm | 0.626 in; ;

SLK-4

Price Range
$0.48 - $0.48

Stock Levels
816 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-902B
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled
Thumb Screw Knob - Knob Diameter 15.9 mm | 0.626 in; ;

SLK-4Y

Price Range
$0.48 - $0.48

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-902Y
  • Color
    Yellow
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled
Thumb Screw Knob - Knob Diameter 19.0 mm | 0.748 in; ;

SLK-500R

Price Range
$0.15 - $0.15

Stock Levels
51 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-931R
  • Color
    Red
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled
Thumb Screw Knob - Knob Diameter 25.4 mm | 1 in; ;

SLK-6Y

Price Range
$0.53 - $0.53

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-904Y
  • Color
    Yellow
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled
Thumb Screw Knob - ; ;

SLK-280

Price Range
$126.19 - $80.30

Stock Levels
2 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    99-617-3
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled, Lobed, Wing
Thumb Screw Knob - Knob Diameter 38.1 mm | 1.5 in; ;

SLK-10

Price Range
$1.29 - $1.29

Stock Levels
196 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-909B
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Lobed
Thumb Screw Knob - Knob Diameter 19.1 mm | 0.752 in; ;

SLK-5

Price Range
$0.55 - $0.55

Stock Levels
550 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 38.0 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 26.0 mm | 1.024 in; ;

SLK-700R

Price Range
$0.31 - $0.31

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-933R
  • Color
    Red
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled
Thumb Screw L-Knob: 1.375 in Knob Diameter, 13.1 mm Base Diameter, 1/4 Compatible Screw Size, SLK-16

SLK-16

Price Range
$0.38 - $0.38

Stock Levels
106 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-951B
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    L-Knob