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OSG Spiral Point Tap: 1/4"-20 UNC, 2B+, 2 Flute, Plug Chamfer - Oversized Spiral-Point Taps
OSGOversized Spiral-Point Taps

OSG Spiral Point Tap: 1/4"-20 UNC, 2B+, 2 Flute, Plug Chamfer

The OSG Spiral Point Tap (1/4"-20 UNC, MPN 1590008) is an oversized spiral-point tap with a 2B+ tolerance, 2-flute design, plug chamfer, and TiCN-coated high-speed steel construction. 3G Electric interprets this…

SKU 3G-OTH-251153

Brand
OSG
Item
Spiral Point Tap: 1/4"-20 UNC, 2B+, 2 Flute, Plug Chamfer
Category
Oversized Spiral-Point Taps
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Technical Specifications

OSG
Manufacturer Part Number
1590008
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"-20 UNC, MPN 1590008) is an oversized spiral-point tap with a 2B+ tolerance, 2-flute design, plug chamfer, and TiCN-coated high-speed steel construction. 3G Electric interprets this demand and delivers the exact OEM-specified tool, backed by our specialist expertise in sourcing across 14 industrial departments — and far more — with trusted depth in cutting tools and controls.

Frequently Asked Questions

What is the OSG spiral point tap 1/4-20 UNC used for?

The OSG spiral point tap is used for threading through holes in metal, particularly in production environments. Its spiral point design pushes chips forward, preventing clogging. The TiCN coating extends tool life on steel and cast iron. The 2B+ oversized tolerance allows for controlled thread fit in applications requiring plating or coating.

What are the specifications of the OSG 1590008 tap?

The OSG 1590008 is a 1/4-20 UNC spiral point tap with a 2B+ thread class, 2 flutes, and a plug chamfer. It is made of TiCN coated high speed steel. The oversized 2B+ tolerance provides additional clearance for post-plating thread fit. It is designed for through-hole threading in ferrous materials.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on the OSG 1590008 spiral point tap. We source and deliver to any country.

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

Select an OSG tap based on material, hole type, and thread fit. For through holes, use a spiral point tap like the 1590008. Choose TiCN coating for steel or cast iron. The 2B+ oversized class is ideal when threads require post-plating. Match tap size to the hole diameter and thread pitch (1/4-20 UNC).

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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