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Thumb Screw Knobs

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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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For large volumes and customised products, add to your cart and click request a quote, orcontact usand we will respond within 2 working days.

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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 - $0.55 155 In stock
0.748 in
Knurled
Reid Select
$0.53 - $0.53 101 In stock
1.024 in
Knurled
Reid Select
$1.19 - $1.19 76 In stock
1.496 in
Lobed
Reid Select
$0.56 - $0.56 40 In stock
1.181 in
Wing
Reid Select
$0.48 - $0.48 188 In stock
0.500 in
Knurled
Reid Select
$0.55 - $0.55 496 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
$0.48 - $0.48 275 In stock
0.374 in
Knurled
Reid Select
$0.84 - $0.84 177 In stock
1 in
Knurled
Reid Select
$80.30 - $126.19 2 In stock
Knurled, Lobed, Wing
Reid Select
$0.48 - $0.48 119 In stock
1.00 in
Wing
Reid Select
  • of 3
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-600G

Price Range
$0.53 - $0.53

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; Lobed, Black, Delrin

SLK-800

Price Range
$1.19 - $1.19

Stock Levels
76 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-934B
  • Base Diameter
    0.555 in
  • Knob Diameter
    1.496 in
  • Color
    Black
Thumb Screw Knob; Wing, Black, Delrin

SLK-1200

Price Range
$0.56 - $0.56

Stock Levels
40 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; 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; Knurled, Black, Delrin

SLK-5

Price Range
$0.55 - $0.55

Stock Levels
496 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; Knurled, Red, Delrin

SLK-2R

Price Range
$0.48 - $0.48

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

SLK-6

Price Range
$0.84 - $0.84

Stock Levels
177 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-904B
  • Base Diameter
    0.500 in
  • Knob Diameter
    1 in
  • Color
    Black
Thumb Screw Knob; Knurled, Lobed, Wing, Black, Delrin

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; Wing, Red, Delrin

SLK-11R

Price Range
$0.48 - $0.48

Stock Levels
119 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    83-98-923R
  • Base Diameter
    0.437 in
  • Knob Diameter
    1.00 in
  • Color
    Red