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OSG Spiral Point Tap: 1/4"-28 UNF, 2B+, 2 Flute, Plug Chamfer - Oversized Spiral-Point Taps
OSGOversized Spiral-Point Taps

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

The OSG Spiral Point Tap (1/4"-28 UNF, MPN 1590208) is an oversized spiral-point tap with a 2B+ thread class, 2-flute design, plug chamfer, and TiCN-coated high-speed steel construction. 3G Electric interprets…

SKU 3G-OTH-251210

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

OSG
Manufacturer Part Number
1590208
Type
2B+, 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, MPN 1590208) is an oversized spiral-point tap with a 2B+ thread class, 2-flute design, plug chamfer, and TiCN-coated high-speed steel construction. 3G Electric interprets customer demand and delivers this genuine industrial cutting tool across 14 departments — with specialist depth in combustion, pumps, and controls as a trust anchor — ensuring you get the right solution, not just a catalog.

Frequently Asked Questions

What is an OSG spiral point tap used for?

An OSG spiral point tap is designed for through-hole threading in production machining. Its spiral-point geometry pushes chips ahead, preventing chip clogging and enabling faster tapping cycles in materials like steel and aluminum.

What are the specifications of the OSG 1/4"-28 UNF spiral point tap?

This OSG tap has a 1/4"-28 UNF thread, 2B+ tolerance, 2 flutes, plug chamfer, and TiCN-coated high-speed steel. The 2B+ oversize class provides tighter fit for critical applications. Manufacturer part number is 1590208.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps worldwide, handling full logistics and customs clearance. As a global industrial sourcing partner, we provide genuine OSG cutting tools like the 1590208 spiral point tap to any destination. Contact us for availability and delivery.

How to select the right OSG tap for a threading application?

Select tap type based on hole configuration: spiral point for through holes, spiral flute for blind holes. Match thread size (e.g., 1/4"-28 UNF), tolerance class (2B+ for oversize), coating (TiCN for abrasive materials), and chamfer (plug for general use) to your material and depth.

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 oversized 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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