Westward
Westward Hand Tap Set HSS 3/8-16 H3 Limit PK3
High-speed steel fractional tap set cuts 3/8-16 UNC threads with H3 limit in a pack of three
- TypeFractional
- High-speed steel taps stay sharp longer for clean threads
- 3/8-16 UNC size fits standard fractional fasteners
- H3 limit ensures precise thread fit for reliable assembly
- Right-hand thread direction matches most common applications
- Three-piece set provides taper, plug and bottoming taps
3/8-16 UNC Hand Tap Set
This three-piece set provides fractional taps in 3/8-16 UNC thread size for creating or repairing internal threads. Each tap is made from high-speed steel with a bright uncoated finish and H3 thread limit. Right-hand cutting direction and four flutes suit general-purpose threading work in metal.
Installation and common issues
Start the tap square to the hole using a tap wrench and apply cutting fluid to reduce friction. Advance the tap a half turn then reverse a quarter turn to break chips and prevent binding. Misalignment or running dry are the main causes of broken flutes or oversized threads in this size.
Check before ordering
Verify the workpiece material is compatible with uncoated high-speed steel and that the drilled hole matches the 3/8-16 UNC tap drill specification. Confirm the H3 limit meets the required class of fit for the application. Ensure a suitable tap wrench and cutting fluid are available for the job.
Highlights
- High-speed steel taps stay sharp longer for clean threads
- 3/8-16 UNC size fits standard fractional fasteners
- H3 limit ensures precise thread fit for reliable assembly
- Right-hand thread direction matches most common applications
- Three-piece set provides taper, plug and bottoming taps
Specifications
| Brand | Westward |
|---|---|
| Type | Fractional |
Questions about this item
How can I verify the tap is cutting threads correctly after setup?
The tap should produce clean UNC threads matching the 3/8-16 size with four flutes evacuating chips smoothly through the 1 1/4 inch thread length.
What comes in the package and what must I supply?
The set includes three HSS right-hand taps with H3 limit; you will need a compatible tap wrench, cutting fluid and a correctly sized drill bit for the pilot hole.
Why choose the H3 limit version over other limits?
H3 provides a standard fit for general-purpose UNC threading in most materials, while tighter or looser limits serve specialised tolerance requirements.
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