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OSG Spiral Point Tap: 5/16"-18 UNC, H11, 3 Flute, Plug Chamfer (MPN 2855808) - Oversized Spiral-Point Taps
OSGOversized Spiral-Point Taps

OSG Spiral Point Tap: 5/16"-18 UNC, H11, 3 Flute, Plug Chamfer (MPN 2855808)

OSG Oversized Spiral-Point Taps.

SKU 3G-OTH-251162

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
2855808

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 machining. Its spiral point pushes chips ahead, preventing clogging and enabling faster tapping in steel, aluminum, and cast iron across automotive, aerospace, and general manufacturing.

What are the specifications of the OSG 2855808 tap?

The OSG 2855808 is a spiral point tap with 5/16"-18 UNC thread, H11 tolerance, 3 flutes, and plug chamfer. It is an oversized tap for controlled thread fit. 3G Electric supplies this genuine OSG part worldwide with full logistics and customs support.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps worldwide, including the 2855808 spiral point tap. We handle global logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this and other OSG cutting tools across 14 industrial departments.

How to select the right OSG tap for a job?

Select an OSG tap based on material, hole type, and thread class. For through holes, a spiral point tap like the 2855808 is ideal. Match thread size (5/16"-18 UNC), chamfer (plug), and tolerance (H11) to your application. 3G Electric can help interpret your needs and source the correct OSG tool.

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 2855800)
OSG
OSG Spiral Point Tap: 5/16"-18 UNC, H11, 3 Flute, Plug Chamfer (MPN 2855800)
OSG Spiral Point Tap: 3/8"-16 UNC, H11 / 2B, 3 Flute, Plug Chamfer (MPN 2856608)
OSG
OSG Spiral Point Tap: 3/8"-16 UNC, H11 / 2B, 3 Flute, Plug Chamfer (MPN 2856608)
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
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
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)

More from OSG

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Oversized spiral-point tap for through-hole threading. H11 tolerance, plug chamfer, 3 flutes. TiCN coated vanadium high speed steel construction. Suitable for production tapping in steel and aluminum
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Oversized spiral-point tap for through-hole threading. H11 tolerance, plug chamfer, 3 flutes. TiCN coated vanadium high speed steel construction. Suitable for production tapping in steel and aluminum
This OSG oversized spiral-point tap is designed for through-hole threading in metals, with a M12x1.25 metric thread, D11 / 4H-6H tolerance, 3 flutes, and a plug chamfer. The spiral-point geometry pushes chips ahead to prevent clogging, making it suitable for high-speed production threading applications
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This OSG oversized spiral-point tap is designed for through-hole threading in metals, with a M12x1.25 metric thread, D11 / 4H-6H tolerance, 3 flutes, and a plug chamfer. The spiral-point geometry pushes chips ahead to prevent clogging, making it suitable for high-speed production threading applications
This OSG oversized spiral-point tap is designed for threading through holes in metal, steel, and alloys. The spiral point design pushes chips forward, preventing clogging and ensuring clean threads. It is suitable for production machining and general manufacturing applications requiring precise UNF threads
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This OSG oversized spiral-point tap is designed for threading through holes in metal, steel, and alloys. The spiral point design pushes chips forward, preventing clogging and ensuring clean threads. It is suitable for production machining and general manufacturing applications requiring precise UNF threads
Oversized spiral-point tap for through-hole threading in metals. Features H11 tolerance, 3 flutes, and plug chamfer. Designed to produce threads slightly larger than standard for applications requiring looser fit or coating allowance. Chip evacuation is facilitated by the spiral point geometry
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Oversized spiral-point tap for through-hole threading in metals. Features H11 tolerance, 3 flutes, and plug chamfer. Designed to produce threads slightly larger than standard for applications requiring looser fit or coating allowance. Chip evacuation is facilitated by the spiral point geometry
OSG Spiral Point Tap: 3/8"-16 UNC, H11 / 2B, 3 Flute, Plug Chamfer (MPN 2856601)
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OSG Spiral Point Tap: 3/8"-16 UNC, H11 / 2B, 3 Flute, Plug Chamfer (MPN 2856601)
Oversized spiral-point tap for through-hole threading, featuring a 2B+ thread class for tighter fit in critical applications. Constructed from TiCN-coated high-speed steel with a 2-flute design and plug chamfer. The spiral-point geometry pushes chips ahead, reducing clogging in production tapping of steel and aluminum
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Oversized spiral-point tap for through-hole threading, featuring a 2B+ thread class for tighter fit in critical applications. Constructed from TiCN-coated high-speed steel with a 2-flute design and plug chamfer. The spiral-point geometry pushes chips ahead, reducing clogging in production tapping of steel and aluminum
OSG Spiral Point Tap: 1/2"-20 UNF, H11 / 2B, 3 Flute, Plug Chamfer (MPN 2842900)
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OSG Spiral Point Tap: 1/2"-20 UNF, H11 / 2B, 3 Flute, Plug Chamfer (MPN 2842900)
Oversized spiral-point tap for through-hole threading. Features TiCN-coated high-speed steel construction, plug chamfer, and 3 flutes. Designed for production tapping of steel and aluminum, with spiral-point geometry that pushes chips forward to prevent clogging. 2B+ tolerance provides tighter thread fit
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Oversized spiral-point tap for through-hole threading. Features TiCN-coated high-speed steel construction, plug chamfer, and 3 flutes. Designed for production tapping of steel and aluminum, with spiral-point geometry that pushes chips forward to prevent clogging. 2B+ tolerance provides tighter thread fit