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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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55 results
Product SKUs information
Item Code Price range Availability Knob Diameter Knob Style Special Offer Brand Compatible Screw Sizes View
$0.48 - $0.48 500 In stock
0.378 in
Knurled
Reid Select
$0.48 - $0.48 997 In stock
0.500 in
Knurled
Reid Select
$0.48 - $0.48 Request the lead time here
0.626 in
Knurled
Reid Select
$0.55 - $0.55 Request the lead time here
0.748 in
Knurled
Reid Select
$0.15 - $0.15 30 In stock
0.752 in
Knurled
Reid Select
$0.21 - $0.21 9 In stock
1 in
Knurled
Reid Select
$0.31 - $0.31 Request the lead time here
1.024 in
Knurled
Reid Select
$80.30 - $126.19 Request the lead time here
Knurled, Lobed, Wing
Reid Select
$1.29 - $1.29 527 In stock
1.5 in
Lobed
Reid Select
$1.29 - $1.29 Request the lead time here
1.5 in
Lobed
Reid Select
$1.19 - $1.19 37 In stock
1.5 in
Lobed
Reid Select
$0.48 - $0.48 39 In stock
1.00 in
Wing
Reid Select
$0.56 - $0.56 Request the lead time here
1.25 in
Wing
Reid Select
$0.48 - $0.48 106 In stock
0.374 in
Knurled
Reid Select
$0.48 - $0.48 345 In stock
0.512 in
Knurled
Reid Select
$0.40 - $0.40 Request the lead time here
0.626 in
Knurled
Reid Select
$0.55 - $0.55 55 In stock
0.748 in
Knurled
Reid Select
$0.55 - $0.55 85 In stock
0.752 in
Knurled
Reid Select
$0.69 - $0.69 101 In stock
1.024 in
Knurled
Reid Select
$0.83 - $0.83 226 In stock
1.024 in
Knurled
Reid Select
  • of 3
Thumb Screw Knob; Knurled, Black, Delrin

SLK-200

Price Range
$0.48 - $0.48

Stock Levels
500 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-928B
  • Base Diameter
    0.327 in
  • Knob Diameter
    0.378 in
  • Color
    Black
Thumb Screw Knob; Knurled, Red, Delrin

SLK-3R

Price Range
$0.48 - $0.48

Stock Levels
997 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-901R
  • Base Diameter
    0.374 in
  • Knob Diameter
    0.500 in
  • Color
    Red
Thumb Screw Knob; Knurled, Red, Delrin

SLK-4R

Price Range
$0.48 - $0.48

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-902R
  • Base Diameter
    0.421 in
  • Knob Diameter
    0.626 in
  • Color
    Red
Thumb Screw Knob; Knurled, Gray, Delrin

SLK-500G

Price Range
$0.55 - $0.55

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-931G
  • Base Diameter
    0.512 in
  • Knob Diameter
    0.748 in
  • Color
    Gray
Thumb Screw Knob; Knurled, Yellow, Delrin

SLK-5Y

Price Range
$0.15 - $0.15

Stock Levels
30 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-903Y
  • Base Diameter
    0.500 in
  • Knob Diameter
    0.752 in
  • Color
    Yellow
Thumb Screw Knob; Knurled, Red, Delrin

SLK-6R

Price Range
$0.21 - $0.21

Stock Levels
9 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-904R
  • Base Diameter
    0.500 in
  • Knob Diameter
    1 in
  • Color
    Red
Thumb Screw Knob; Knurled, Red, Delrin

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
  • Base Diameter
    0.63 in
  • Knob Diameter
    1.024 in
  • Color
    Red
Thumb Screw Knob; Knurled, Lobed, Wing, Black, Delrin

SLK-260

Price Range
$126.19 - $80.30

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
  • Includes
    260 Pcs. Metric Asst. - Black 20 Ea. of SLK-200 thru SLK-1300
Thumb Screw Knob; Lobed, Black, Delrin

SLK-10

Price Range
$1.29 - $1.29

Stock Levels
527 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-909B
  • Base Diameter
    0.705 in
  • Knob Diameter
    1.5 in
  • Color
    Black
Thumb Screw Knob; Lobed, Yellow, Delrin

SLK-10Y

Price Range
$1.29 - $1.29

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-909Y
  • Base Diameter
    0.705 in
  • Knob Diameter
    1.5 in
  • Color
    Yellow
Thumb Screw Knob; Lobed, Black, Delrin

SLK-9

Price Range
$1.19 - $1.19

Stock Levels
37 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-908B
  • Base Diameter
    0.579 in
  • Knob Diameter
    1.5 in
  • Color
    Black
Thumb Screw Knob; Wing, Red, Delrin

SLK-11R

Price Range
$0.48 - $0.48

Stock Levels
39 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-923R
  • Base Diameter
    0.437 in
  • Knob Diameter
    1.00 in
  • Color
    Red
Thumb Screw Knob; Wing, Yellow, Delrin

SLK-12Y

Price Range
$0.56 - $0.56

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-924Y
  • Base Diameter
    0.516 in
  • Knob Diameter
    1.25 in
  • Color
    Yellow
Thumb Screw Knob; Knurled, Black, Delrin

SLK-2

Price Range
$0.48 - $0.48

Stock Levels
106 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-900B
  • Base Diameter
    0.327 in
  • Knob Diameter
    0.374 in
  • Color
    Black
Thumb Screw Knob; Knurled, Black, Delrin

SLK-300

Price Range
$0.48 - $0.48

Stock Levels
345 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-929B
  • Base Diameter
    0.386 in
  • Knob Diameter
    0.512 in
  • Color
    Black
Thumb Screw Knob; Knurled, Gray, Delrin

SLK-4G

Price Range
$0.40 - $0.40

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-902G
  • Base Diameter
    0.421 in
  • Knob Diameter
    0.626 in
  • Color
    Gray
Thumb Screw Knob; Knurled, Black, Delrin

SLK-500

Price Range
$0.55 - $0.55

Stock Levels
55 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-931B
  • Base Diameter
    0.512 in
  • Knob Diameter
    0.748 in
  • Color
    Black
Thumb Screw Knob; Knurled, Red, Delrin

SLK-5R

Price Range
$0.55 - $0.55

Stock Levels
85 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-903R
  • Base Diameter
    0.500 in
  • Knob Diameter
    0.752 in
  • Color
    Red
Thumb Screw Knob; Knurled, Gray, Delrin

SLK-600G

Price Range
$0.69 - $0.69

Stock Levels
101 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-932G
  • Base Diameter
    0.512 in
  • Knob Diameter
    1.024 in
  • Color
    Gray
Thumb Screw Knob; Knurled, Black, Delrin

SLK-700

Price Range
$0.83 - $0.83

Stock Levels
226 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-933B
  • Base Diameter
    0.63 in
  • Knob Diameter
    1.024 in
  • Color
    Black