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OSG Spiral Point Tap: 1/4"-28 UNF, H1 / 2B-3B, 2 Flute, Plug Chamfer - General Purpose Spiral-Point Taps
OSGGeneral Purpose Spiral-Point Taps

OSG Spiral Point Tap: 1/4"-28 UNF, H1 / 2B-3B, 2 Flute, Plug Chamfer

The OSG Spiral Point Tap (1/4"-28 UNF) is a general-purpose spiral-point tap with a plug chamfer, TiCN-coated high-speed steel construction, and H1 / 2B-3B thread class. It features 2 flutes and is identified by MPN…

SKU 3G-OTH-215187

Brand
OSG
Item
Spiral Point Tap: 1/4"-28 UNF, H1 / 2B-3B, 2 Flute, Plug Chamfer
Category
General Purpose Spiral-Point Taps
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Technical Specifications

OSG
Manufacturer Part Number
1220408
Type
H1 / 2B-3B, Plug Chamfer, TiCN Coated High Speed Steel
Flute
2
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Point Tap (1/4"-28 UNF) is a general-purpose spiral-point tap with a plug chamfer, TiCN-coated high-speed steel construction, and H1 / 2B-3B thread class. It features 2 flutes and is identified by MPN 1220408.

Frequently Asked Questions

What is the 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, making it suitable for high-speed production environments where consistent thread quality is required.

What are the specifications of the OSG 1220408 tap?

The OSG 1220408 is a 1/4-28 UNF spiral point tap with H1 / 2B-3B tolerance, 2 flutes, and a plug chamfer. It is made from TiCN coated high speed steel, designed for general purpose threading in ferrous materials.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps like the 1220408 to customers worldwide. We handle full logistics and customs clearance, ensuring your order arrives at your facility. Contact us for pricing and lead time on this and other OSG tooling.

How to select the correct tap for UNF threads?

For UNF threads like 1/4-28, match the tap's thread pitch and class of fit (e.g., 2B-3B) to your application. Spiral point taps are ideal for through holes, while plug chamfer suits general purpose threading. Always verify material compatibility and coating for optimal tool life.

Used in

Common applications for OSG
Automotive engine block production — OSG micro drill bits for oil gallery and coolant passage drilling in cast iron
Medical device manufacturing — OSG micro drill bits for drilling bone screw pilot holes in stainless steel implants
Aerospace component machining — OSG micro drill bits for fastener holes in titanium alloy structural parts
Mold and die making — OSG micro drill bits for cooling channel drilling in hardened tool steel (HRC 45-50)
Electronics enclosure fabrication — OSG micro drill bits for precision holes in aluminum alloy housings (with appropriate coating selection)
General engineering job shops — OSG micro drill bits for small-diameter hole drilling in mild steel and alloy steel parts

OSG Products

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.

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