Description
Overview:
The Volkel Taper/2nd/Plug 1/4 x 28 UNF Imperial Tap Set of 3 is a precision hand-tapping set for producing unified fine internal threads in metal. Made from high-quality steel, it includes three taps for the full threading sequence: Taper (starting), Second/Intermediate, and Plug (finishing). The size is 1/4 inch (6.35 mm) with 28 threads per inch, equivalent to a pitch of approximately 0.91 mm. The straight flute design suits controlled hand use with a tap wrench or T-handle in common workshop materials such as mild steel, aluminium, and brass. Manufactured to ANSI B1.1 for UNF threads, it delivers accurate fit with matching fasteners used across machinery, small engines, and garden equipment. Ideal for maintenance, repair, and fabrication tasks where clean, reliable threads are needed.
Key Features:
- Three-piece sequence (Taper, 2nd, Plug) for easy starts, correct alignment, and full thread depth
- Size: 1/4 in (6.35 mm) x 28 TPI, approx. 0.91 mm pitch, for fine-thread applications
- Straight flute design for controlled hand tapping and smooth chip evacuation
- Durable steel construction for consistent cutting performance and long service life
- Finished to ANSI B1.1 UNF standards for dimensional accuracy and compatibility
- Suited to mild steel, aluminium, and brass when used with suitable cutting fluid
- Works with standard tap wrenches or T-handles for simple setup and use
- Clearly defined chamfers on each tap stage for predictable cutting action
- Fine thread profile offers strong holding in thinner sections and precision assemblies
- Brand: Volkel, trusted for workshop threading tools
- Manufacturer Part Number (MPN): 834/014
Typical Applications:
Cutting and repairing 1/4-28 UNF internal threads in components such as housings, brackets, engine covers, carburettor bodies, and fixtures. Useful in construction plant, automotive, agricultural and garden machinery service, as well as general fabrication and maintenance. Suitable for workshop or on-site work with a tap wrench and cutting fluid.
Also known as:
Hand tap set, 1/4-28 UNF tap set, taper tap, second (intermediate) tap, plug tap, thread cutting tap, thread cutter, UNF fine-thread tap, workshop tap, threading tool, internal thread tap set.
Product Specifications
| L&S Part No. | 902 1460S |
|---|---|
| Manufacturer | Volkel |
| OEM No. | 834/014 |
| Unit of Sale | 1 |
| Key Features | - Three-piece set: Taper, Second, Plug for complete threading - 1/4 inch size, 28 threads per inch for fine threads - Straight flute design for controlled hand tapping - Made from durable steel for long service life - ANSI B1.1 UNF standard for dimensional accuracy |
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