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1/4" Thumb Screws

 

 


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1/4-20         1/4-28
   UNC-3A                                             UNF-3A

 

1/4-20 SERIES
(All of the screws in the tables below have 3A threads and are fully threaded )
(Screws longer than listed are available but are normally not fully threaded.)


Knurled Style Thumbscrew

      
Rosette Style Thumbscrew


Tee Style Thumbscrew


L Style Thumbscrew

Please add Knob color and Screw type prefix to the part number.

B=Black, R=Red, G=Gray, Y=Yellow, A=Alloy, S=Stainless, Z=Zinc plate

For ex:a 3/4 dia. Black Knurled knob fitted with a 1/4-20x3/8 alloy screw would have a part number of 903B-2520-0.37A

Note:Items at the right of the table marked with X are standard items.Please inquire about the availability of non standards.

Please go to the what's new/etc page. for information on zinc plated screw assemblies marked with a  * .

Screw/L Dim

A Dim./Style

Part Number

B

R

G

Y

 A S Z

1/4-20x3/8

 3/4" Knurled

903-2520-0.37

x

x

 x x x x *

1/4-20x3/8

 1.0" Knurled

904-2520-0.37

x

 x x x x x *
1/4-20x3/8 1 1/2" Rosette 907-2520-0.37 x x x x x x *
1/4-20x3/8 1 1/4" Tee 924-2520-0.37 x x x x x x *
1/4-20x3/8 11/16" L 951-2520-0.37 x x x x x x *

Screw/L Dim

A Dim./Style

Part Number

B

R

G

Y

 A S Z

1/4-20x1/2

 3/4" Knurled

903-2520-0.50

x

x

 x x x x *

1/4-20x1/2

 1.0" Knurled

904-2520-0.50

x

 x x x x x *
1/4-20x1/2 1 1/2" Rosette 907-2520-0.50 x x x x x x *
1/4-20x1/2 1 1/4" Tee 924-2520-0.50 x x x x x x *
1/4-20x1/2 11/16" L 951-2520-0.50 x x x x x x *

Screw/L Dim

A Dim./Style

Part Number

B

R

G

Y

 A S Z

1/4-20x5/8

 3/4" Knurled

903-2520-0.62

x

x

 x x x x *

1/4-20x5/8

 1.0" Knurled

904-2520-0.62

x

 x x x x x *
1/4-20x5/8 1 1/2" Rosette 907-2520-0.62 x x x x x x *
1/4-20x5/8 1 1/4" Tee 924-2520-0.62 x x x x x x *
1/4-20x5/8 11/16" L 951-2520-0.62 x x x x x x *

Screw/L Dim

A Dim./Style

Part Number

B

R

G

Y

 A S Z

1/4-20x3/4

 3/4" Knurled

903-2520-0.75

x

x

 x x x x *

1/4-20x3/4

 1.0" Knurled

904-2520-0.75

x

 x x x x x *
1/4-20x3/4 1 1/2" Rosette 907-2520-0.75 x x x x x x *
1/4-20x3/4 1 1/4" Tee 924-2520-0.75 x x x x x x *
1/4-20x3/4 11/16" L 951-2520-0.75 x x x x x x *

Screw/L Dim

A Dim./Style

Part Number

B

R

G

Y

 A S Z

1/4-20x7/8

 3/4" Knurled

903-2520-0.87

x

x

 x x x x *

1/4-20x7/8

 1.0" Knurled

904-2520-0.87

x

 x x x x x *
1/4-20x7/8 1 1/2" Rosette 907-2520-0.87 x x x x x x *
1/4-20x7/8 1 1/4" Tee 924-2520-0.87 x x x x x x *
1/4-20x7/8 11/16" L 951-2520-0.87 x x x x x x *

Screw/L Dim

A Dim./Style

Part Number

B

R

G

Y

 A S Z

1/4-20x1.0

 3/4" Knurled

903-2520-1.00

x

x

 x x x x *

1/4-20x1.0

 1.0" Knurled

904-2520-1.00

x

 x x x x x *
1/4-20x1.0 1 1/2" Rosette 907-2520-1.00 x x x x x x *
1/4-20x1.0 1 1/4" Tee 924-2520-1.00 x x x x x x *
1/4-20x1.0 11/16" L 951-2520-1.00 x x x x x x *

Screw/L Dim

A Dim./Style

Part Number

B

R

G

Y

 A S Z

1/4-20x1 1/4

 3/4" Knurled

903-2520-1.25

x

x

 x x x x *

1/4-20x1 1/4

 1.0" Knurled

904-2520-1.25

x

 x x x x x *
1/4-20x1 1/4 1 1/2" Rosette 907-2520-1.25 x x x x x x *
1/4-20x1 1/4 1 1/4" Tee 924-2520-1.25 x x x x x x *
1/4-20x1 1/4 11/16" L 951-2520-1.25 x x x x x x *

Screw/L Dim

A Dim./Style

Part Number

B

R

G

Y

 A S Z

1/4-20x1 1/2

 3/4" Knurled

903-2520-1.50

x

x

 x x x x *

1/4-20x1 1/2

 1.0" Knurled

904-2520-1.50

x

 x x x x x *
1/4-20x1 1/2 1 1/2" Rosette 907-2520-1.50 x x x x x x *
1/4-20x1 1/2 1 1/4" Tee 924-2520-1.50 x x x x x x *
1/4-20x1 1/2 11/16" L 951-2520-1.50 x x x x x x *

Screw/L Dim

A Dim./Style

Part Number

B

R

G

Y

 A S Z

1/4-20x1 3/4

 3/4" Knurled

903-2520-1.75

x

x

 x x x *

1/4-20x1 3/4

 1.0" Knurled

904-2520-1.75

x

 x x x x *
1/4-20x1 3/4 1 1/2" Rosette 907-2520-1.75 x x x x x *
1/4-20x1 3/4 1 1/4" Tee 924-2520-1.75 x x x x x *
1/4-20x1 3/4 11/16" L 951-2520-1.75 x x x x x *

Screw/L Dim

A Dim./Style

Part Number

B

R

G

Y

 A S Z

1/4-20x2

 3/4" Knurled

903-2520-2.00

x

x

 x x x *

1/4-20x2

 1.0" Knurled

904-2520-2.00

x

 x x x x *
1/4-20x2 1 1/2" Rosette 907-2520-2.00 x x x x x *
1/4-20x2 1 1/4" Tee 924-2520-2.00 x x x x x *
1/4-20x2 11/16" L 951-2520-2.00 x x x x x *

Screw/L Dim

A Dim./Style

Part Number

B

R

G

Y

 A S Z

1/4-20x2 1/2

 3/4" Knurled

903-2520-2.50

x

x

 x x x *

1/4-20x2 1/2

 1.0" Knurled

904-2520-2.50

x

 x x x x *
1/4-20x2 1/2 1 1/2" Rosette 907-2520-2.50 x x x x x *
1/4-20x2 1/2 1 1/4" Tee 924-2520-2.50 x x x x x *
1/4-20x2 1/2 11/16" L 951-2520-2.50 x x x x x *

Screw/L Dim

A Dim./Style

Part Number

B

R

G

Y

 A S Z

1/4-20x3

 3/4" Knurled

903-2520-3.00

x

x

 x x x *

1/4-20x3

 1.0" Knurled

904-2520-3.00

x

 x x x x *
1/4-20x3 1 1/2" Rosette 907-2520-3.00 x x x x x *
1/4-20x3 1 1/4" Tee 924-2520-3.00 x x x x x *
1/4-20x3 11/16" L 951-2520-3.00 x x x x x *

Note: Listed are Shear-Loc's standard Full Thread offerings.
We also offer many other standard & semi standard screw lengths.
  Please call for more information

1-800-638-1830

Click here to go back to the Thumb Screw selection page.

Don't forget about our knobs only and convenient knob kits
For purchasing information go to FAQ

1/4-28 SERIES
(All of the screws in the tables below have 3A threads and are fully threaded )
(Screws longer than listed are available but are normally not fully threaded.)


Knurled Style Thumbscrew

      
Rosette Thumbscrew


Tee Style Thumbscrew


L Style Thumbscrew

 

 

Please add Knob color and Screw type prefix to the part number.

B=Black, R=Red, G=Gray, Y=Yellow, A=Alloy, S=Stainless, Z=Zinc plate

For ex:a 3/4 dia. Black Knurled knob fitted with a 1/4-28x3/8 alloy screw would have a part number of 903B-2528-0.37A

Note:Items at the right of the table marked with X are standard items.Please inquire about the availability of non standards.

Please go to the what's new/etc page. for information on zinc plated screw assemblies marked with a  * .

Screw/L Dim

A Dim./Style

Part Number

B

R

G

Y

 A S Z

1/4-28x3/8

 3/4" Knurled

903-2528-0.37

x

x

 x x x x *

1/4-28x3/8

 1.0" Knurled

904-2528-0.37

x

 x x x x x *
1/4-28x3/8 1 1/2" Rosette 907-2528-0.37 x x x x x x *
1/4-28x3/8 1 1/4" Tee 924-2528-0.37 x x x x x x *
1/4-28x3/8 11/16" L 951-2528-0.37 x x x x x x *

Screw/L Dim

A Dim./Style

Part Number

B

R

G

Y

 A S Z

1/4-28x1/2

 3/4" Knurled

903-2528-0.50

x

x

 x x x x *

1/4-28x1/2

 1.0" Knurled

904-2528-0.50

x

 x x x x x *
1/4-28x1/2 1 1/2" Rosette 907-2528-0.50 x x x x x x *
1/4-28x1/2 1 1/4" Tee 924-2528-0.50 x x x x x x *
1/4-28x1/2 11/16" L 951-2528-0.50