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OSG Spiral Point Tap: 5/16"-18 UNC, H1 / 2B-3B, 2 Flute, Plug Chamfer - General Purpose Spiral-Point Taps
OSGGeneral Purpose Spiral-Point Taps

OSG Spiral Point Tap: 5/16"-18 UNC, H1 / 2B-3B, 2 Flute, Plug Chamfer

The OSG Spiral Point Tap (5/16"-18 UNC, MPN 1220805) is a general-purpose spiral-point tap with a TiN-coated high-speed steel construction, H1 / 2B-3B thread class, 2-flute design, and plug chamfer. 3G Electric…

SKU 3G-OTH-215314

Brand
OSG
Item
Spiral Point Tap: 5/16"-18 UNC, H1 / 2B-3B, 2 Flute, Plug Chamfer
Category
General Purpose Spiral-Point Taps
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Technical Specifications

OSG
Manufacturer Part Number
1220805
Type
H1 / 2B-3B, Plug Chamfer, TiN 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 (5/16"-18 UNC, MPN 1220805) is a general-purpose spiral-point tap with a TiN-coated high-speed steel construction, H1 / 2B-3B thread class, 2-flute design, and plug chamfer. 3G Electric interprets your demand for this OEM-specified tool and delivers it across 14 industrial departments — with specialist depth in combustion, pumps, and controls as a trust anchor, not a limit.

Frequently Asked Questions

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

This OSG spiral point tap is used for threading through holes in metal, steel, and alloys. Its TiN coating reduces friction and extends tool life. The plug chamfer and 2-flute design push chips forward, making it ideal for high-speed production tapping in automotive, aerospace, and general manufacturing.

What are the specifications of the OSG 1220805 tap?

The OSG 1220805 is a 5/16-18 UNC spiral point tap with H1 / 2B-3B tolerance, plug chamfer, and TiN coated high speed steel. It has 2 flutes and is designed for through-hole threading. The H1 / 2B-3B rating ensures precise thread fit for general purpose applications.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps worldwide. We handle full logistics, customs clearance, and delivery to your facility. As a global industrial distributor since 1990, we source genuine OSG tooling like the 1220805 spiral point tap and manage international shipping. Contact us for availability and lead time.

How to select the right OSG tap for through holes?

For through holes, choose a spiral point tap like this OSG 5/16-18 UNC model. It pushes chips ahead, preventing clogging. Match the thread size, pitch, and tolerance (H1 / 2B-3B) to your application. TiN coating is recommended for ferrous materials. Always use proper cutting fluid and machine speed.

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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