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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 1220808) is a general-purpose spiral-point tap with a plug chamfer, TiCN-coated high-speed steel construction, and 2-flute design. It is specified as H1 / 2B-3B class of…

SKU 3G-OTH-215977

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
1220808
Type
H1 / 2B-3B, Plug Chamfer, TiCN 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 1220808) is a general-purpose spiral-point tap with a plug chamfer, TiCN-coated high-speed steel construction, and 2-flute design. It is specified as H1 / 2B-3B class of fit, suitable for through-hole threading applications.

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 blind or through holes in ferrous and non-ferrous materials. Its TiCN coating and plug chamfer design make it suitable for general-purpose tapping in production environments where chip evacuation is critical.

What are the specifications of the OSG 1220808 tap?

The OSG 1220808 is a 5/16-18 UNC spiral point tap with H1 / 2B-3B tolerance, 2 flutes, plug chamfer, and TiCN coated high speed steel. It is designed for general-purpose threading and is manufactured by OSG.

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 location. Contact us for availability and lead time on the OSG 1220808 spiral point tap.

How to select the correct OSG tap for a threading application?

Select an OSG tap based on thread size (e.g., 5/16-18 UNC), material type, and hole configuration. For blind holes, use a spiral point tap like this OSG model. Ensure the tap tolerance (H1 / 2B-3B) matches your required thread class. Consult OSG's technical data for optimal results.

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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