Complete thumbscrews where the knob and screw are factory assembled to your specifications and are ready for use.
Screws have a 3A class thread and are available in black alloy steel, stainless steel and zinc plated. Screws are fully threaded unless marked with an ” * ” at the end of the part number.
Direct factory assemblies may require a minimum but we can direct you to a source to meet your Shear-Loc requirement. Contact us.
Note: If ordering with zinc plated screws, please contact us regarding availability.
Dimension Drawing PDFs




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wdt_ID | Part # | Thread | Length | Style | Color | Screw Material | Dimension A | Dimension B | Dimension C | Measure Unit |
---|---|---|---|---|---|---|---|---|---|---|
1 | 899B-0440-0.25A | 4 - 40 | 1/4" | Knurled | Black | Black Alloy Steel | 5/16" | 11/64" | 9/32" | Inch |
2 | 899B-0440-0.25S | 4 - 40 | 1/4" | Knurled | Black | Stainless Steel 18-8 | 5/16" | 11/64" | 9/32" | Inch |
3 | 899B-0440-0.25Z | 4 - 40 | 1/4" | Knurled | Black | Zinc Plated | 5/16" | 11/64" | 9/32" | Inch |
4 | 899B-0440-0.37A | 4 - 40 | 3/8" | Knurled | Black | Black Alloy Steel | 5/16" | 11/64" | 9/32" | Inch |
5 | 899B-0440-0.37S | 4 - 40 | 3/8" | Knurled | Black | Stainless Steel 18-8 | 5/16" | 11/64" | 9/32" | Inch |
6 | 899B-0440-0.37Z | 4 - 40 | 3/8" | Knurled | Black | Zinc Plated | 5/16" | 11/64" | 9/32" | Inch |
7 | 899B-0440-0.50A | 4 - 40 | 1/2" | Knurled | Black | Black Alloy Steel | 5/16" | 11/64" | 9/32" | Inch |
8 | 899B-0440-0.50S | 4 - 40 | 1/2" | Knurled | Black | Stainless Steel 18-8 | 5/16" | 11/64" | 9/32" | Inch |
9 | 899B-0440-0.50Z | 4 - 40 | 1/2" | Knurled | Black | Zinc Plated | 5/16" | 11/64" | 9/32" | Inch |
10 | 899B-0440-0.62A | 4 - 40 | 5/8" | Knurled | Black | Black Alloy Steel | 5/16" | 11/64" | 9/32" | Inch |
11 | 899B-0440-0.62S | 4 - 40 | 5/8" | Knurled | Black | Stainless Steel 18-8 | 5/16" | 11/64" | 9/32" | Inch |
12 | 899B-0440-0.62Z | 4 - 40 | 5/8" | Knurled | Black | Zinc Plated | 5/16" | 11/64" | 9/32" | Inch |
13 | 899B-0440-0.75A | 4 - 40 | 3/4" | Knurled | Black | Black Alloy Steel | 5/16" | 11/64" | 9/32" | Inch |
14 | 899B-0440-0.75S | 4 - 40 | 3/4" | Knurled | Black | Stainless Steel 18-8 | 5/16" | 11/64" | 9/32" | Inch |
15 | 899B-0440-0.75Z | 4 - 40 | 3/4" | Knurled | Black | Zinc Plated | 5/16" | 11/64" | 9/32" | Inch |
16 | 899B-0440-0.87A | 4 - 40 | 7/8" | Knurled | Black | Black Alloy Steel | 5/16" | 11/64" | 9/32" | Inch |
17 | 899B-0440-0.87S | 4 - 40 | 7/8" | Knurled | Black | Stainless Steel 18-8 | 5/16" | 11/64" | 9/32" | Inch |
18 | 899B-0440-1.00A | 4 - 40 | 1" | Knurled | Black | Black Alloy Steel | 5/16" | 11/64" | 9/32" | Inch |
19 | 899B-0440-1.00S* | 4 - 40 | 1" | Knurled | Black | Stainless Steel 18-8 | 5/16" | 11/64" | 9/32" | Inch |
20 | 899G-0440-0.25A | 4 - 40 | 1/4" | Knurled | Gray | Black Alloy Steel | 5/16" | 11/64" | 9/32" | Inch |
21 | 899G-0440-0.25S | 4 - 40 | 1/4" | Knurled | Gray | Stainless Steel 18-8 | 5/16" | 11/64" | 9/32" | Inch |
22 | 899G-0440-0.25Z | 4 - 40 | 1/4" | Knurled | Gray | Zinc Plated | 5/16" | 11/64" | 9/32" | Inch |
23 | 899G-0440-0.37A | 4 - 40 | 3/8" | Knurled | Gray | Black Alloy Steel | 5/16" | 11/64" | 9/32" | Inch |
24 | 899G-0440-0.37S | 4 - 40 | 3/8" | Knurled | Gray | Stainless Steel 18-8 | 5/16" | 11/64" | 9/32" | Inch |
25 | 899G-0440-0.37Z | 4 - 40 | 3/8" | Knurled | Gray | Zinc Plated | 5/16" | 11/64" | 9/32" | Inch |
Thread | Length | Style | Color | Screw Material | Measure Unit |