Dual Adjusting Type
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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 except part numbers marked with a " * "at the end )
(Screws longer than listed are available but are normally not
fully threaded.)
(When using the hex socket to install this
thumbscrew, caution should be taken not to over tighten the plastic knob if it
comes in contact with a surface, as knob damage or breakage can occur)
The plastic knob portion of the thumbscrew is currently
offered in black and will soon be available in red, gray and yellow. As with the entire line, Shear-Loc will furnish free samples for testing needs.
Knurled Style Key Drive 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
example: A
3/4 diameter Black Knurled knob with a
"L" dimension of 3/8 Alloy screw would have a part
number of K03B-2520-0.37A |
Note: Items at
the right of the table marked with "X" are standard items
"O" are non 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
"O" . |
Screw/L Dim. |
A Dim./Style |
Part Number |
B |
R |
G |
Y |
A |
S |
Z |
1/4-20x3/8" |
3/4"
Knurled |
K03 -2520-0.37 |
x |
o |
o |
o |
x |
x |
o |
| 1/4-20x3/8" |
1" Knurled |
K04-2520-0.37 |
x |
o |
o |
o |
x |
x |
o |
1/4-20x1/2" |
3/4"
Knurled |
K03-2520-0.50 |
x |
o |
o |
o |
x |
x |
o |
| 1/4-20x1/2" |
1" Knurled |
K04-2520-0.50 |
x |
o |
o |
o |
x |
x |
o |
1/4-20x5/8" |
3/4"
Knurled |
K03-2520-0.62 |
x |
o |
o |
o |
x |
x |
o |
| 1/4-20x5/8" |
1" Knurled |
K04-2520-0.62 |
x |
o |
o |
o |
x |
x |
o |
1/4-20x3/4" |
3/4"
Knurled |
K03-2520-0.75 |
x |
o |
o |
o |
x |
x |
o |
| 1/4-20x3/4" |
1" Knurled |
K04-2520-0.75 |
x |
o |
o |
o |
x |
x |
o |
1/4-20x7/8" |
3/4"
Knurled |
K03-2520-0.87 |
x |
o |
o |
o |
x |
x |
o |
| 1/4-20x7/8" |
1" Knurled |
K04-2520-0.87 |
x |
o |
o |
o |
x |
x |
o |
1/4-20x1
1/8" |
3/4"
Knurled |
K03-2520-1.12 |
x |
o |
o |
o |
x |
x |
o |
| 1/4-20x1
1/8" |
1" Knurled |
K04-2520-1.12 |
x |
o |
o |
o |
x |
x |
o |
1/4-20x1
3/8" |
3/4"
Knurled |
K03-2520-1.37* |
x |
o |
o |
o |
x |
x |
o |
| 1/4-20x1
3/8" |
1" Knurled |
K04-2520-1.37* |
x |
o |
o |
o |
x |
x |
o |
Keys Available at Competitive Prices
We also offer many other standard & semi standard screw lengths fully
and not fully threaded.
Please call for more information
1-800-775-5668
Click here to go back to the
Key Drive selection page.
Don't forget about our original thumbscrews,
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 except part numbers marked with a " * "at the end )
(Screws longer than listed are available but are normally not
fully threaded.)
(When using the hex socket to install this
thumbscrew, caution should be taken not to over tighten the plastic knob if it
comes in contact with a surface, as knob damage or breakage can occur)
The plastic knob portion of the thumbscrew is currently
offered in black and will soon be available in red, gray and yellow. As with the entire line, Shear-Loc will furnish free samples for testing needs.
Knurled Style Key Drive 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
example: A
3/4" diameter Black Knurled knob with a
"L" dimension of 3/8" Alloy screw would have a part
number of K03B-2528-0.37A |
Note: Items at
the right of the table marked with "X" are standard items
"O" are non 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
"O" . |
Screw/L Dim. |
A Dim./Style |
Part Number |
B |
R |
G |
Y |
A |
S |
Z |
1/4-28x3/8" |
3/4"
Knurled |
K03-2528-0.37 |
x |
o |
o |
o |
x |
x |
o |
| 1/4-28x3/8" |
1" Knurled |
K04-2528-0.37 |
x |
o |
o |
o |
x |
x |
o |
1/4-28x1/2" |
3/4"
Knurled |
K03-2528-0.50 |
x |
o |
o |
o |
x |
x |
o |
| 1/4-28x1/2" |
1" Knurled |
K04-2528-0.50 |
x |
o |
o |
o |
x |
x |
o |
1/4-28x5/8" |
3/4"
Knurled |
K03-2528-0.62 |
x |
o |
o |
o |
x |
x |
o |
| 1/4-28x5/8" |
1" Knurled |
K04-2528-0.62 |
x |
o |
o |
o |
x |
x |
o |
1/4-28x3/4" |
3/4"
Knurled |
K03-2528-0.75 |
x |
o |
o |
o |
x |
x |
o |
| 1/4-28x3/4" |
1" Knurled |
K04-2528-0.75 |
x |
o |
o |
o |
x |
x |
o |
1/4-28x7/8" |
3/4"
Knurled |
K03-2528-0.87 |
x |
o |
o |
o |
x |
x |
o |
| 1/4-28x7/8" |
1" Knurled |
K04-2528-0.87 |
x |
o |
o |
o |
x |
x |
o |
1/4-28x1
1/8" |
3/4"
Knurled |
K03-2528-1.12 |
x |
o |
o |
o |
x |
x |
o |
| 1/4-28x1
1/8" |
1" Knurled |
K04-2528-1.12 |
x |
o |
o |
o |
x |
x |
o |
1/4-28x1
3/8" |
3/4"
Knurled |
K03-2528-1.37* |
x |
o |
o |
o |
x |
x |
o |
| 1/4-28x1
3/8" |
1" Knurled |
K04-2528-1.37* |
x |
o |
o |
o |
x |
x |
o |
Keys Available at Competitive Prices
We also offer many other standard & semi standard screw lengths fully
and not fully threaded.
Please call for more information
1-800-775-5668
Click here to go back to the
Key Drive selection page.
Don't forget about our original thumbscrews,
knobs only and convenient knob kits
For purchasing information go to FAQ
