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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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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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55 results
Product SKUs information
Item Code Price range Availability Knob Diameter Knob Style Special Offer Brand Compatible Screw Sizes View
$0.18 - $0.18 52 In stock
1.496 in
Wing
Shear-Loc
$0.56 - $0.56 Click here for lead time.
1.25 in
Wing
Shear-Loc
$0.48 - $0.48 188 In stock
0.500 in
Knurled
Shear-Loc
$0.55 - $0.55 842 In stock
0.752 in
Knurled
Shear-Loc
$0.84 - $0.84 312 In stock
1.024 in
Knurled
Shear-Loc
$0.83 - $0.83 155 In stock
1 in
Knurled
Shear-Loc
$0.56 - $0.56 106 In stock
1.375 in
L-Knob
Shear-Loc
$0.35 - $0.35 240 In stock
1.5 in
Lobed
Shear-Loc
$0.33 - $0.33 535 In stock
1.00 in
Wing
Shear-Loc
$0.39 - $0.39 25 In stock
0.311 in
Knurled
Shear-Loc
$0.48 - $0.48 306 In stock
0.374 in
Knurled
Shear-Loc
$0.48 - $0.48 1316 In stock
0.626 in
Knurled
Shear-Loc
$0.48 - $0.48 Click here for lead time.
0.626 in
Knurled
Shear-Loc
$0.15 - $0.15 83 In stock
0.748 in
Knurled
Shear-Loc
$0.84 - $0.84 132 In stock
1 in
Knurled
Shear-Loc
$0.84 - $0.84 Click here for lead time.
1 in
Knurled
Shear-Loc
$0.83 - $0.83 Click here for lead time.
1 in
Knurled
Shear-Loc
$96.32 - $151.36 Click here for lead time.
Knurled, Lobed, Wing, L-Knob
Shear-Loc
$1.29 - $1.29 2846 In stock
1.496 in
Lobed
Shear-Loc
$1.19 - $1.19 199 In stock
1.5 in
Lobed
Shear-Loc
  • of 3
Thumb Screw Knob; Wing, Black, Delrin

SLK-1300

Price Range
$0.18 - $0.18

Stock Levels
52 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.65 in
  • Knob Diameter
    1.496 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Wing, Yellow, Delrin

SLK-12Y

Price Range
$0.56 - $0.56

Stock Levels
Click here for lead time.
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.516 in
  • Knob Diameter
    1.25 in
  • Color
    Yellow
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Black, Delrin

SLK-3

Price Range
$0.48 - $0.48

Stock Levels
188 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.374 in
  • Knob Diameter
    0.500 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Black, Delrin

SLK-5

Price Range
$0.55 - $0.55

Stock Levels
842 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.500 in
  • Knob Diameter
    0.752 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Black, Delrin

SLK-600

Price Range
$0.84 - $0.84

Stock Levels
312 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.512 in
  • Knob Diameter
    1.024 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Black, Delrin

SLK-7

Price Range
$0.83 - $0.83

Stock Levels
155 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.594 in
  • Knob Diameter
    1 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; L-Knob, Black, Delrin

SLK-16

Price Range
$0.56 - $0.56

Stock Levels
106 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.516 in
  • Knob Diameter
    1.375 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Lobed, Gray, Delrin

SLK-10G

Price Range
$0.35 - $0.35

Stock Levels
240 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.705 in
  • Knob Diameter
    1.5 in
  • Color
    Gray
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Wing, Black, Delrin

SLK-11

Price Range
$0.33 - $0.33

Stock Levels
535 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.437 in
  • Knob Diameter
    1.00 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Black, Delrin

SLK-1

Price Range
$0.39 - $0.39

Stock Levels
25 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.28 in
  • Knob Diameter
    0.311 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Red, Delrin

SLK-2R

Price Range
$0.48 - $0.48

Stock Levels
306 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.327 in
  • Knob Diameter
    0.374 in
  • Color
    Red
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Black, Delrin

SLK-4

Price Range
$0.48 - $0.48

Stock Levels
1316 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.421 in
  • Knob Diameter
    0.626 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Yellow, Delrin

SLK-4Y

Price Range
$0.48 - $0.48

Stock Levels
Click here for lead time.
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.421 in
  • Knob Diameter
    0.626 in
  • Color
    Yellow
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Red, Delrin

SLK-500R

Price Range
$0.15 - $0.15

Stock Levels
83 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.512 in
  • Knob Diameter
    0.748 in
  • Color
    Red
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Black, Delrin

SLK-6

Price Range
$0.84 - $0.84

Stock Levels
132 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.500 in
  • Knob Diameter
    1 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Yellow, Delrin

SLK-6Y

Price Range
$0.84 - $0.84

Stock Levels
Click here for lead time.
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.500 in
  • Knob Diameter
    1 in
  • Color
    Yellow
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Red, Delrin

SLK-7R

Price Range
$0.83 - $0.83

Stock Levels
Click here for lead time.
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.594 in
  • Knob Diameter
    1 in
  • Color
    Red
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Lobed, Wing, L-Knob, Black, Delrin

SLK-622

Price Range
$151.36 - $96.32

Stock Levels
Click here for lead time.
Attributes
  • Brand
    Shear-Loc
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled, Lobed, Wing, L-Knob
  • Material
    Delrin
Thumb Screw Knob; Lobed, Black, Delrin

SLK-1000

Price Range
$1.29 - $1.29

Stock Levels
2846 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.768 in
  • Knob Diameter
    1.496 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Lobed, Black, Delrin

SLK-8

Price Range
$1.19 - $1.19

Stock Levels
199 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.531 in
  • Knob Diameter
    1.5 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Lobed, Black, Delrin

SLK-900

Price Range
$1.19 - $1.19

Stock Levels
134 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.63 in
  • Knob Diameter
    1.496 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Wing, Black, Delrin

SLK-12

Price Range
$0.56 - $0.56

Stock Levels
480 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.516 in
  • Knob Diameter
    1.25 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Black, Delrin

SLK-2

Price Range
$0.48 - $0.48

Stock Levels
106 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.327 in
  • Knob Diameter
    0.374 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Black, Delrin

SLK-300

Price Range
$0.48 - $0.48

Stock Levels
465 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.386 in
  • Knob Diameter
    0.512 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Gray, Delrin

SLK-4G

Price Range
$0.40 - $0.40

Stock Levels
Click here for lead time.
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.421 in
  • Knob Diameter
    0.626 in
  • Color
    Gray
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Black, Delrin

SLK-500

Price Range
$0.55 - $0.55

Stock Levels
107 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.512 in
  • Knob Diameter
    0.748 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Red, Delrin

SLK-5R

Price Range
$0.55 - $0.55

Stock Levels
85 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.500 in
  • Knob Diameter
    0.752 in
  • Color
    Red
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Gray, Delrin

SLK-600G

Price Range
$0.69 - $0.69

Stock Levels
101 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.512 in
  • Knob Diameter
    1.024 in
  • Color
    Gray
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Black, Delrin

SLK-700

Price Range
$0.83 - $0.83

Stock Levels
226 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.63 in
  • Knob Diameter
    1.024 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Lobed, Wing, Black, Delrin

SLK-621

Price Range
$125.36 - $79.77

Stock Levels
Click here for lead time.
Attributes
  • Brand
    Shear-Loc
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled, Lobed, Wing
  • Material
    Delrin
Thumb Screw Knob; L-Knob, Red, Delrin

SLK-16R

Price Range
$0.56 - $0.56

Stock Levels
Click here for lead time.
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.516 in
  • Knob Diameter
    1.375 in
  • Color
    Red
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Lobed, Red, Delrin

SLK-10R

Price Range
$0.35 - $0.35

Stock Levels
Click here for lead time.
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.705 in
  • Knob Diameter
    1.5 in
  • Color
    Red
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Lobed, Red, Delrin

SLK-8R

Price Range
$1.19 - $1.19

Stock Levels
Click here for lead time.
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.531 in
  • Knob Diameter
    1.5 in
  • Color
    Red
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Wing, Black, Delrin

SLK-1100

Price Range
$0.48 - $0.48

Stock Levels
Click here for lead time.
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.472 in
  • Knob Diameter
    1.024 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Wing, Red, Delrin

SLK-12R

Price Range
$0.56 - $0.56

Stock Levels
Click here for lead time.
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.516 in
  • Knob Diameter
    1.25 in
  • Color
    Red
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Black, Delrin

SLK-200

Price Range
$0.48 - $0.48

Stock Levels
1286 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.327 in
  • Knob Diameter
    0.378 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Red, Delrin

SLK-3R

Price Range
$0.48 - $0.48

Stock Levels
1296 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.374 in
  • Knob Diameter
    0.500 in
  • Color
    Red
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Red, Delrin

SLK-4R

Price Range
$0.48 - $0.48

Stock Levels
Click here for lead time.
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.421 in
  • Knob Diameter
    0.626 in
  • Color
    Red
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Gray, Delrin

SLK-500G

Price Range
$0.55 - $0.55

Stock Levels
Click here for lead time.
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.512 in
  • Knob Diameter
    0.748 in
  • Color
    Gray
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Yellow, Delrin

SLK-5Y

Price Range
$0.15 - $0.15

Stock Levels
30 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.500 in
  • Knob Diameter
    0.752 in
  • Color
    Yellow
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Red, Delrin

SLK-6R

Price Range
$0.21 - $0.21

Stock Levels
9 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.500 in
  • Knob Diameter
    1 in
  • Color
    Red
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Red, Delrin

SLK-700R

Price Range
$0.31 - $0.31

Stock Levels
Click here for lead time.
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.63 in
  • Knob Diameter
    1.024 in
  • Color
    Red
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Lobed, Wing, Black, Delrin

SLK-260

Price Range
$126.19 - $80.30

Stock Levels
Click here for lead time.
Attributes
  • Brand
    Shear-Loc
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
  • Includes
    260 Pcs. Metric Asst. - Black20 Ea. of SLK-200 thru SLK-1300
  • Knob Style
    Knurled, Lobed, Wing
Thumb Screw Knob; Lobed, Black, Delrin

SLK-10

Price Range
$1.29 - $1.29

Stock Levels
547 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.705 in
  • Knob Diameter
    1.5 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Lobed, Yellow, Delrin

SLK-10Y

Price Range
$1.29 - $1.29

Stock Levels
Click here for lead time.
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.705 in
  • Knob Diameter
    1.5 in
  • Color
    Yellow
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Lobed, Black, Delrin

SLK-9

Price Range
$1.19 - $1.19

Stock Levels
41 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.579 in
  • Knob Diameter
    1.5 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Wing, Red, Delrin

SLK-11R

Price Range
$0.48 - $0.48

Stock Levels
45 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.437 in
  • Knob Diameter
    1.00 in
  • Color
    Red
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Wing, Black, Delrin

SLK-13

Price Range
$0.65 - $0.65

Stock Levels
Click here for lead time.
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.626 in
  • Knob Diameter
    1.50 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Red, Delrin

SLK-1R

Price Range
$0.30 - $0.30

Stock Levels
Click here for lead time.
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.28 in
  • Knob Diameter
    0.311 in
  • Color
    Red
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Black, Delrin

SLK-400

Price Range
$0.14 - $0.14

Stock Levels
765 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.453 in
  • Knob Diameter
    0.63 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Gray, Delrin

SLK-5G

Price Range
$0.47 - $0.47

Stock Levels
Click here for lead time.
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.500 in
  • Knob Diameter
    0.752 in
  • Color
    Gray
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Knurled, Lobed, Wing, Black, Delrin

SLK-280

Price Range
$126.19 - $80.30

Stock Levels
2 In stock
Attributes
  • Brand
    Shear-Loc
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
  • Knob Style
    Knurled, Lobed, Wing
  • Material
    Delrin
Thumb Screw Knob; Lobed, Black, Delrin

SLK-800

Price Range
$1.19 - $1.19

Stock Levels
894 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.555 in
  • Knob Diameter
    1.496 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Thumb Screw Knob; Wing, Black, Delrin

SLK-1200

Price Range
$0.56 - $0.56

Stock Levels
110 In stock
Attributes
  • Brand
    Shear-Loc
  • Base Diameter
    0.531 in
  • Knob Diameter
    1.181 in
  • Color
    Black
  • Full Material
    Delrin 500 Acetal Resin
Push-Pull Knurled Knobs; , ,

ICK-2370

Price Range
$0.65 - $0.41

Stock Levels
8 In stock
Attributes
  • Brand
    Reid Select
  • Knob Diameter
    0.750 in
  • Knob Style
    Push-Pull Knobs
  • Special Offer
    New