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OSG Spiral Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

OSG Spiral Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer

The OSG Spiral Flute Tap (5/16"-18 UNC, MPN 1430500) is a general-purpose spiral-flute tap with a bottoming chamfer, 3 flutes, and H3 / 2B-3B tolerance class, made from high-speed steel. 3G Electric sources this…

SKU 3G-OTH-230173

Brand
OSG
Item
Spiral Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer
Category
General Purpose Spiral-Flute Taps
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Technical Specifications

OSG
Manufacturer Part Number
1430500
Type
H3 / 2B-3B, Bottoming Chamfer, High Speed Steel
Flute
3
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Flute Tap (5/16"-18 UNC, MPN 1430500) is a general-purpose spiral-flute tap with a bottoming chamfer, 3 flutes, and H3 / 2B-3B tolerance class, made from high-speed steel. 3G Electric sources this genuine OSG tool for your threading applications.

Frequently Asked Questions

What is the OSG spiral flute tap 5/16"-18 UNC used for?

This OSG spiral flute tap is used for threading blind holes in materials such as steel and aluminum. Its spiral flute design evacuates chips upward, preventing clogging. The bottoming chamfer allows threading close to the bottom of the hole. It is common in automotive and general manufacturing applications.

What are the specifications of the OSG spiral flute tap 5/16"-18 UNC?

The OSG spiral flute tap has a thread size of 5/16"-18 UNC, with a H3 / 2B-3B tolerance class. It features 3 flutes, a bottoming chamfer, and is made from high-speed steel. The manufacturer part number is 1430500. It is designed for general purpose threading in blind holes.

Where to buy the OSG spiral flute tap 5/16"-18 UNC worldwide?

You can source the OSG spiral flute tap 5/16"-18 UNC worldwide through 3G Electric. As a global industrial equipment distributor, 3G Electric handles full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this OSG tap.

How to select the correct OSG spiral flute tap for blind holes?

For blind holes, choose a spiral flute tap with a bottoming chamfer, like this OSG model. The spiral flute design pushes chips out of the hole, preventing breakage. Ensure the thread size (5/16"-18 UNC) and tolerance class (H3 / 2B-3B) match your application. High-speed steel is suitable for general purpose threading.

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-flute taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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