Greenfield Threading
Greenfield Threading 300645 Straight Flute Hand Tap Plug, 3 Flutes
A straight-flute hand tap for #3-56 UNF threads, plug style with three flutes and H2 limit in high-speed steel
- Right-hand threads suit standard fasteners
- High-speed steel resists wear during tapping
- Plug chamfer starts threads in through-holes
- Bright finish prevents coating buildup
- #46 drill size matches 75 % thread depth
Greenfield Threading 300645 Hand Tap
This Greenfield Threading 300645 straight flute hand tap creates internal UNF threads. The plug chamfer starts threads easily in through-holes or deep blind holes. High speed steel construction handles general-purpose tapping in steel, aluminium and plastic. Right-hand cut suits standard fastening applications.
Check thread size and drill before ordering
Verify the required thread is #3-56 UNF with a 2B class of fit. The tap needs a #46 drill size for 75 percent thread engagement. Confirm the workpiece material suits high speed steel and that a 1.81 inch overall length fits your holder or tap wrench.
Bright finish and H2 limit guide daily use
The bright uncoated surface requires cutting fluid to prevent galling and extend tool life. H2 thread limit produces a standard fit for most assemblies. Three flutes provide good chip clearance in ductile materials. Square shank drives securely in a tap wrench for hand operation.
Highlights
- Right-hand threads suit standard fasteners
- High-speed steel resists wear during tapping
- Plug chamfer starts threads in through-holes
- Bright finish prevents coating buildup
- #46 drill size matches 75 % thread depth
Specifications
| Brand | CHICAGO-LATROBE |
|---|
Questions about this item
What comes in the package and what else do I need to start tapping?
The box contains the CHICAGO-LATROBE 300645 straight-flute hand tap. You will need a #46 drill bit for the 75 percent thread hole, a tap wrench to turn the tool, and cutting fluid for the operation.
How do I choose between the available thread sizes for this tap?
This model is a single specification: #3-56 UNF, plug style, H2 limit, class 2B fit. There are no alternative sizes or versions listed for the 300645, so you simply verify that your application calls for this exact thread.
What does the 1.81 in overall length mean when I am using the tap by hand?
The tap measures 1.81 inches from end to end with a .5 inch thread length. The remaining shank and square fit a standard tap wrench, giving you full control for hand threading in a through-hole or blind-hole application.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
