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OSG Spiral Point Tap: 5/16"-18 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer - General Purpose Spiral-Point Taps
OSGGeneral Purpose Spiral-Point Taps

OSG Spiral Point Tap: 5/16"-18 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer

The OSG Spiral Point Tap (5/16"-18 UNC, MPN 1225800) is a general-purpose spiral-point tap with a plug chamfer, made from high-speed steel. It features 2 flutes and is rated H2 / 2B-3B for thread class compatibility.

SKU 3G-OTH-216119

Brand
OSG
Item
Spiral Point Tap: 5/16"-18 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer
Category
General Purpose Spiral-Point Taps
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Technical Specifications

OSG
Manufacturer Part Number
1225800
Type
H2 / 2B-3B, Plug Chamfer, 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 1225800) is a general-purpose spiral-point tap with a plug chamfer, made from high-speed steel. It features 2 flutes and is rated H2 / 2B-3B for thread class compatibility.

Frequently Asked Questions

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

This OSG spiral point tap is designed for through-hole threading in ferrous and non-ferrous materials. Its plug chamfer and 2-flute geometry push chips forward, making it ideal for high-speed production tapping in automotive, aerospace, and general manufacturing applications.

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

The OSG tap has a 5/16"-18 UNC thread size, H2 / 2B-3B tolerance, 2 flutes, plug chamfer, and is made of high-speed steel. The manufacturer part number is 1225800. It is a general-purpose spiral-point tap designed for through-hole threading.

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

3G Electric supplies the OSG spiral point tap 5/16"-18 UNC (MPN 1225800) worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to select the correct OSG spiral point tap for through-hole threading?

Select a spiral point tap for through-hole applications where chips must be pushed ahead. Match thread size (5/16"-18 UNC), tolerance class (H2 / 2B-3B), and chamfer type (plug) to your material and hole depth. OSG high-speed steel taps suit general-purpose use in steel and aluminum.

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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