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WIDIA GTD Tap Kit: #4-40 UNC, H2, 3 Flute - Three-Piece Hand Tap Sets
WIDIA GTDThree-Piece Hand Tap Sets

WIDIA GTD Tap Kit: #4-40 UNC, H2, 3 Flute

SKU 3G-OTH-319888

Brand
WIDIA GTD
Item
Tap Kit: #4-40 UNC, H2, 3 Flute
Category
Three-Piece Hand Tap Sets
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Technical Specifications

WIDIA GTD
Manufacturer Part Number
15187
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WIDIA GTD Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is the WIDIA GTD Tap Kit #4-40 UNC used for?

This three-piece hand tap set is used for creating #4-40 UNC internal threads in metal. It includes taper, plug, and bottoming taps for starting, intermediate, and blind-hole threading. Common in automotive, aerospace, and general machining applications.

What are the specifications of the WIDIA GTD Tap Kit 15187?

The kit includes one each taper (4AHL3), plug (4AHL4), and bottoming (4AHL5) tap. All are #4-40 UNC, H2 tolerance, 3-flute, high-speed steel. The manufacturer part number is 15187. WIDIA GTD designs these for precise hand threading in ferrous materials.

Where to buy WIDIA GTD Tap Kit 15187 worldwide?

3G Electric supplies the WIDIA GTD Tap Kit 15187 worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time. We source and deliver this three-piece hand tap set globally.

How to select the correct WIDIA GTD tap for a blind hole?

For blind holes, use the bottoming tap (4AHL5) from this WIDIA GTD kit. Start with the taper tap (4AHL3) to begin threads, then the plug tap (4AHL4), and finish with the bottoming tap to thread close to the hole bottom. Always use cutting fluid and align the tap perpendicular to the workpiece.

Used in

Common applications for WIDIA GTD
Automotive manufacturing — WIDIA GTD spiral-point taps (e.g., VTSPO5099) for through-hole threading in engine blocks
Aerospace component production — WIDIA GTD TiCN-coated taps for threading stainless steel and titanium alloys
General machining job shops — WIDIA GTD hand tap sets for maintenance and repair threading of UNC/UNF fasteners
Aluminum fabrication — WIDIA GTD spiral-flute taps for aluminum (e.g., MPN 16058) for blind-hole threading in heat sinks
Hydraulic system assembly — WIDIA GTD thread-forming taps (e.g., MPN 19862) for cold-forming threads in ductile materials
Oil and gas equipment — WIDIA GTD cobalt spiral-flute taps (e.g., VTSFT5170) for threading high-strength steel components

WIDIA GTD Products

3G Electric supplies WIDIA GTD three-piece hand tap sets. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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