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OSG Spiral Point Tap: 5/16"-18 UNC, H11, 3 Flute, Plug Chamfer (MPN 2855800) - Oversized Spiral-Point Taps
OSGOversized Spiral-Point Taps

OSG Spiral Point Tap: 5/16"-18 UNC, H11, 3 Flute, Plug Chamfer (MPN 2855800)

OSG Oversized Spiral-Point Taps.

SKU 3G-OTH-251197

Brand
OSG
Item
Spiral Point Tap: 5/16"-18 UNC, H11, 3 Flute, Plug Chamfer
Category
Oversized Spiral-Point Taps
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

OSG
Manufacturer Part Number
2855800

Technical Documents

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

Product Description

OSG Oversized Spiral-Point Taps.

Frequently Asked Questions

What is an OSG spiral point tap used for?

An OSG spiral point tap is designed for through-hole threading in production environments. Its spiral point pushes chips ahead, preventing clogging and enabling faster, cleaner threads in materials like steel and aluminum. This OSG 5/16"-18 UNC tap is ideal for high-volume machining operations.

What are the specifications of the OSG 2855800 tap?

The OSG 2855800 is a spiral point tap with size 5/16"-18 UNC, H11 tolerance, 3 flutes, and plug chamfer. It is an oversized tap for producing threads with tighter fit classes. The manufacturer part number is 2855800, and it is designed for through-hole applications.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps like the 2855800 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. As a global industrial solutions provider, we source genuine OSG cutting tools and support your procurement with technical expertise across 14 departments.

How to select the right OSG tap for UNC threads?

Select an OSG tap based on thread size, pitch, and hole type. For through holes, a spiral point tap like the 5/16"-18 UNC is ideal. Consider material hardness and required thread class; the H11 tolerance on this OSG tap provides precise fit. Always match tap coating to workpiece material for best tool life.

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 oversized 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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Compatible alternatives & equivalents

Cross-referenced by specification & description
This OSG spiral-point tap is sized for 5/16"-18 UNC threads with an H11 tolerance and a plug chamfer. Its three-flute design and spiral point geometry push chips forward, making it suitable for through-hole and blind-hole tapping in ferrous and non-ferrous materials. The oversized construction accommodates specific thread fit requirements in production environments
OSG
This OSG spiral-point tap is sized for 5/16"-18 UNC threads with an H11 tolerance and a plug chamfer. Its three-flute design and spiral point geometry push chips forward, making it suitable for through-hole and blind-hole tapping in ferrous and non-ferrous materials. The oversized construction accommodates specific thread fit requirements in production environments
OSG Spiral Point Tap: 5/16"-18 UNC, H11, 3 Flute, Plug Chamfer (MPN 2855808)
OSG
OSG Spiral Point Tap: 5/16"-18 UNC, H11, 3 Flute, Plug Chamfer (MPN 2855808)
This OSG oversized spiral-point tap is designed for threading blind or through holes in ferrous and non-ferrous materials. Its 3-flute design and plug chamfer push chips forward, reducing clogging in production environments. Common applications include automotive, aerospace, and general machining where UNF threads are required
OSG
This OSG oversized spiral-point tap is designed for threading blind or through holes in ferrous and non-ferrous materials. Its 3-flute design and plug chamfer push chips forward, reducing clogging in production environments. Common applications include automotive, aerospace, and general machining where UNF threads are required
Oversized spiral-point tap for through-hole threading in ferrous and non-ferrous materials. Features a spiral point design that pushes chips forward to reduce clogging and enable faster threading. Thread size 5/16-24 UNF with H11 tolerance, 3 flutes, and plug chamfer. Suitable for applications requiring precise UNF threads with slightly larger pitch diameter
OSG
Oversized spiral-point tap for through-hole threading in ferrous and non-ferrous materials. Features a spiral point design that pushes chips forward to reduce clogging and enable faster threading. Thread size 5/16-24 UNF with H11 tolerance, 3 flutes, and plug chamfer. Suitable for applications requiring precise UNF threads with slightly larger pitch diameter
OSG Spiral Point Tap: 5/16"-24 UNF, H11, 3 Flute, Plug Chamfer (MPN 2841508)
OSG
OSG Spiral Point Tap: 5/16"-24 UNF, H11, 3 Flute, Plug Chamfer (MPN 2841508)
OSG Spiral Point Tap: 3/8"-24 UNF, H11, 3 Flute, Plug Chamfer (MPN 2856800)
OSG
OSG Spiral Point Tap: 3/8"-24 UNF, H11, 3 Flute, Plug Chamfer (MPN 2856800)

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OSG Spiral Point Tap: M10x1.25 Metric, D11 / 6H, 3 Flute, Plug Chamfer (MPN 2894908)
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OSG Spiral Point Tap: M10x1.25 Metric, D11 / 6H, 3 Flute, Plug Chamfer (MPN 2894908)
This OSG spiral-point tap is designed for threading through-holes in metal. The spiral point pushes chips forward, preventing clogging and enabling efficient threading. With a 6H+ tolerance, it provides an oversized pitch diameter for use after coating or plating. Made from high-speed steel with a plug chamfer and 2 flutes
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This OSG spiral-point tap is designed for threading through-holes in metal. The spiral point pushes chips forward, preventing clogging and enabling efficient threading. With a 6H+ tolerance, it provides an oversized pitch diameter for use after coating or plating. Made from high-speed steel with a plug chamfer and 2 flutes
OSG Spiral Point Tap: 7/16"-14 UNC, H11 / 2B, 3 Flute, Plug Chamfer (MPN 2842308)
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OSG Spiral Point Tap: 7/16"-14 UNC, H11 / 2B, 3 Flute, Plug Chamfer (MPN 2842308)
This OSG oversized spiral-point tap is designed for cutting internal threads in through-holes. It features a metric M8x1.25 thread size, D11 / 6H tolerance, 3 flutes, and a plug chamfer. The spiral-point design pushes chips forward, making it suitable for high-speed production tapping in metal workpieces
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This OSG oversized spiral-point tap is designed for cutting internal threads in through-holes. It features a metric M8x1.25 thread size, D11 / 6H tolerance, 3 flutes, and a plug chamfer. The spiral-point design pushes chips forward, making it suitable for high-speed production tapping in metal workpieces
OSG Spiral Point Tap: M8x1 Metric, D11 / 6H, 3 Flute, Plug Chamfer (MPN 2894301)
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OSG Spiral Point Tap: M8x1 Metric, D11 / 6H, 3 Flute, Plug Chamfer (MPN 2894301)
OSG Spiral Point Tap: 3/8"-16 UNC, H11 / 2B, 3 Flute, Plug Chamfer (MPN 2856608)
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OSG Spiral Point Tap: 3/8"-16 UNC, H11 / 2B, 3 Flute, Plug Chamfer (MPN 2856608)
OSG Spiral Point Tap: M12x1.75 Metric, D11 / 6H, 3 Flute, Plug Chamfer (MPN 2895701)
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OSG Spiral Point Tap: M12x1.75 Metric, D11 / 6H, 3 Flute, Plug Chamfer (MPN 2895701)
Oversized spiral-point tap for #6-32 UNC threads. Features H11 tolerance, plug chamfer, and 2 flutes. Constructed from TiCN coated vanadium high-speed steel. Designed for through-hole threading in production machining
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Oversized spiral-point tap for #6-32 UNC threads. Features H11 tolerance, plug chamfer, and 2 flutes. Constructed from TiCN coated vanadium high-speed steel. Designed for through-hole threading in production machining