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OSG Spiral Point Tap: 5/16"-18 UNC, 3B, 2 Flute, Plug Chamfer - General Purpose Spiral-Point Taps
OSGGeneral Purpose Spiral-Point Taps

OSG Spiral Point Tap: 5/16"-18 UNC, 3B, 2 Flute, Plug Chamfer

The OSG Spiral Point Tap (5/16"-18 UNC, MPN 2880801) is a general purpose spiral-point tap with a 3B thread class, plug chamfer, and black oxide high-speed steel construction. It features 2 flutes for efficient chip…

SKU 3G-OTH-215728

Brand
OSG
Item
Spiral Point Tap: 5/16"-18 UNC, 3B, 2 Flute, Plug Chamfer
Category
General Purpose Spiral-Point Taps
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Technical Specifications

OSG
Manufacturer Part Number
2880801
Type
3B, Plug Chamfer, Black Oxide High Speed Steel
Flute
2
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Point Tap (5/16"-18 UNC, MPN 2880801) is a general purpose spiral-point tap with a 3B thread class, plug chamfer, and black oxide high-speed steel construction. It features 2 flutes for efficient chip evacuation in through-hole threading applications.

Frequently Asked Questions

What is the OSG Spiral Point Tap 5/16"-18 UNC used for?

The OSG Spiral Point Tap is used for threading blind or through holes in ferrous and non-ferrous materials. Its spiral-point design pushes chips ahead, reducing chip clogging. Common applications include automotive, aerospace, and general manufacturing where precise UNC threads are required.

What are the specifications of the OSG Spiral Point Tap 5/16"-18 UNC?

This tap has a 5/16"-18 UNC thread size, 3B class fit, 2 flutes, and a plug chamfer. It is made from black oxide high-speed steel (HSS) for wear resistance. The manufacturer part number is 2880801. It is designed for general-purpose threading in production environments.

Where to buy the OSG Spiral Point Tap 5/16"-18 UNC worldwide?

You can source the OSG Spiral Point Tap 5/16"-18 UNC worldwide through 3G Electric. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we supply genuine OSG tooling.

How to select the correct OSG Spiral Point Tap for a job?

Select based on thread size (e.g., 5/16"-18 UNC), class fit (3B for tighter tolerance), material (HSS for general use), and chamfer type (plug for most blind holes). For harder materials, consider OSG's coated variants. Always match tap to hole type (through or blind) and machine capability.

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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