Westward
Westward Hand Tap Set HSS #10-32 H3 Limit PK3
A three-piece high-speed steel tap set for cutting #10-32 UNF threads with an H3 limit
- TypeNumber
- HSS material resists wear during repeated threading
- #10-32 UNF size fits standard fine-pitch applications
- H3 limit ensures accurate class-of-fit tolerance
- Four-flute design clears chips for smoother cuts
- Three-piece set provides taper, plug and bottoming taps
Thread Cutting Set
The Westward Hand Tap Set provides three high-speed steel taps for cutting #10-32 UNF threads in metal. Each tap features four flutes and a right-hand thread direction for standard fastening applications. The bright uncoated finish suits general-purpose threading work in maintenance or fabrication shops.
H3 Thread Limit
The set uses an H3 thread limit which controls the tolerance class of the finished internal thread. This limit determines whether the tapped hole will accept a standard #10-32 fastener with the correct fit. Select this set only when the job specification calls for an H3 class of fit.
Tool Material And Use
High-speed steel construction resists wear during hand tapping operations in mild steel, aluminium and similar materials. The 7/8 inch thread length and 2 3/8 inch overall length give adequate reach for through holes and blind holes. No lubricant or coating is included so cutting fluid must be supplied separately.
Highlights
- HSS material resists wear during repeated threading
- #10-32 UNF size fits standard fine-pitch applications
- H3 limit ensures accurate class-of-fit tolerance
- Four-flute design clears chips for smoother cuts
- Three-piece set provides taper, plug and bottoming taps
Specifications
| Brand | Westward |
|---|---|
| Type | Number |
Questions about this item
What does the #10-32 thread size mean when cutting threads in a real machine?
The #10-32 designation indicates a Unified National Fine thread with a major diameter of number 10 and 32 threads per inch, producing a fine-pitch thread suitable for precision fastening in metal or plastic.
How does the UNF thread standard cap the fit of the H3 limit taps?
The UNF standard defines the thread form and tolerance; the H3 limit places the pitch diameter on the high side of the class 2B allowance, giving a slightly tighter fit than H1 or H2 while still conforming to the standard.
What physical dimensions must a tap wrench or holder accommodate for these taps?
Each tap has an overall length of 2 3/8 inches and a thread length of 7/8 inch with four flutes, so the holder must grip the square shank securely over that length.
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