OSG Spiral Point Tap: 1/4"-28 UNF, H4 / 2B-3B, 3 Flute, Plug Chamfer
The OSG Spiral Point Tap (1/4"-28 UNF, MPN 1235608) is a general-purpose spiral-point tap with a plug chamfer, TiCN-coated high-speed steel construction, and three flutes. It is specified as H4 / 2B-3B class…
SKU 3G-OTH-215472
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Product Description
The OSG Spiral Point Tap (1/4"-28 UNF, MPN 1235608) is a general-purpose spiral-point tap with a plug chamfer, TiCN-coated high-speed steel construction, and three flutes. It is specified as H4 / 2B-3B class, designed for through-hole threading in a range of materials.
Frequently Asked Questions
What is OSG spiral point tap 1/4-28 UNF used for?
This OSG spiral point tap is designed for through-hole threading in steel and cast iron. Its TiCN coating reduces friction and extends tool life. The plug chamfer and 3-flute geometry help push chips forward, making it suitable for production tapping in automotive and general machining applications.
What are the specifications of OSG tap 1235608?
The OSG tap 1235608 is a 1/4-28 UNF spiral point tap with H4 / 2B-3B tolerance, 3 flutes, plug chamfer, and TiCN coated high speed steel. It is designed for through-hole threading and provides a Class 2B or 3B fit in the workpiece.
Where to buy OSG taps in worldwide?
3G Electric supplies OSG taps like the 1235608 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. As a global industrial sourcing partner, we provide genuine OSG tooling with technical support for your threading applications.
How to select the right spiral point tap for through holes?
For through holes, choose a spiral point tap with a plug chamfer and at least 3 flutes. Match the thread size (e.g., 1/4-28 UNF) and tolerance class (H4 / 2B-3B) to your application. TiCN coating is recommended for abrasive materials. OSG taps are a reliable choice for consistent thread quality.
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3G Electric supplies OSG general purpose spiral-point taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.














