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

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

The OSG Spiral Flute Tap (5/16"-18 UNC, MPN 2930801) is a general-purpose spiral-flute tap with an H3 / 2B-3B tolerance and a modified bottoming chamfer, featuring 3 flutes. 3G Electric interprets your demand for…

SKU 3G-OTH-230741

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

OSG
Manufacturer Part Number
2930801
Type
H3 / 2B-3B, Modified Bottoming Chamfer
Flute
3
View Full Spec Sheet

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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Flute Tap (5/16"-18 UNC, MPN 2930801) is a general-purpose spiral-flute tap with an H3 / 2B-3B tolerance and a modified bottoming chamfer, featuring 3 flutes. 3G Electric interprets your demand for this OEM-specified tool and delivers it across 14 industrial departments, with specialist depth in cutting tools and controls to support your sourcing needs.

Frequently Asked Questions

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

This OSG spiral flute tap is designed for threading blind holes in ferrous and non-ferrous materials. The spiral flute design evacuates chips upward, preventing chip clogging. It is commonly used in general manufacturing, automotive, and aerospace applications where precise internal threads are required.

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

This OSG tap has a 5/16"-18 UNC thread size, H3 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. The manufacturer part number is 2930801. It is designed for general purpose threading and is suitable for producing threads to Class 2B or 3B fit.

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 spiral flute tap 5/16"-18 UNC (MPN 2930801). We source and deliver to any country.

How to select the correct OSG tap for blind holes?

For blind holes, choose a spiral flute tap like this OSG model. The spiral flutes pull chips out of the hole, preventing breakage. Ensure the tap has a modified bottoming chamfer to thread close to the hole bottom. Match the thread size, pitch, and tolerance (H3 / 2B-3B) to your application requirements.

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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