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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
$0.55 - $0.55 506 In stock
0.752 in
Knurled
Reid Select
$0.84 - $0.84 307 In stock
1.024 in
Knurled
Reid Select
$79.77 - $125.36 Request the lead time here
Knurled, Lobed, Wing
Reid Select
$1.19 - $1.19 175 In stock
1.5 in
Lobed
Reid Select
$0.55 - $0.55 155 In stock
0.748 in
Knurled
Reid Select
$0.40 - $0.40 Request the lead time here
0.626 in
Knurled
Reid Select
$0.55 - $0.55 60 In stock
0.752 in
Knurled
Reid Select
$0.48 - $0.48 188 In stock
0.500 in
Knurled
Reid Select
$1.29 - $1.29 2045 In stock
1.496 in
Lobed
Reid Select
$1.19 - $1.19 228 In stock
1.496 in
Lobed
Reid Select
$0.56 - $0.56 65 In stock
1.181 in
Wing
Reid Select
$0.56 - $0.56 211 In stock
1.25 in
Wing
Reid Select
  • of 3
Thumb Screw Knob; Knurled, Black, Delrin

SLK-5

Price Range
$0.55 - $0.55

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

SLK-600

Price Range
$0.84 - $0.84

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

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; Lobed, Black, Delrin

SLK-8

Price Range
$1.19 - $1.19

Stock Levels
175 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-907B
  • Base Diameter
    0.531 in
  • Knob Diameter
    1.5 in
  • Color
    Black
Thumb Screw Knob; Knurled, Black, Delrin

SLK-500

Price Range
$0.55 - $0.55

Stock Levels
155 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, 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, Red, Delrin

SLK-5R

Price Range
$0.55 - $0.55

Stock Levels
60 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, Black, Delrin

SLK-3

Price Range
$0.48 - $0.48

Stock Levels
188 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-901B
  • Base Diameter
    0.374 in
  • Knob Diameter
    0.500 in
  • Color
    Black
Thumb Screw Knob; Lobed, Black, Delrin

SLK-1000

Price Range
$1.29 - $1.29

Stock Levels
2045 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-936B
  • Base Diameter
    0.768 in
  • Knob Diameter
    1.496 in
  • Color
    Black
Thumb Screw Knob; Lobed, Black, Delrin

SLK-900

Price Range
$1.19 - $1.19

Stock Levels
228 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-935B
  • Base Diameter
    0.63 in
  • Knob Diameter
    1.496 in
  • Color
    Black
Thumb Screw Knob; Wing, Black, Delrin

SLK-1200

Price Range
$0.56 - $0.56

Stock Levels
65 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-938B
  • Base Diameter
    0.531 in
  • Knob Diameter
    1.181 in
  • Color
    Black
Thumb Screw Knob; Wing, Black, Delrin

SLK-12

Price Range
$0.56 - $0.56

Stock Levels
211 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-924B
  • Base Diameter
    0.516 in
  • Knob Diameter
    1.25 in
  • Color
    Black