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OSG Spiral Point Tap: 1/2"-20 UNF, H11 / 2B, 3 Flute, Plug Chamfer (MPN 2842900) - Oversized Spiral-Point Taps
OSGOversized Spiral-Point Taps

OSG Spiral Point Tap: 1/2"-20 UNF, H11 / 2B, 3 Flute, Plug Chamfer (MPN 2842900)

OSG Oversized Spiral-Point Taps.

SKU 3G-OTH-251165

Brand
OSG
Item
Spiral Point Tap: 1/2"-20 UNF, H11 / 2B, 3 Flute, Plug Chamfer
Category
Oversized Spiral-Point Taps
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

OSG
Manufacturer Part Number
2842900

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 the OSG spiral point tap 1/2"-20 UNF used for?

This OSG spiral point tap is designed for through-hole threading in steel, stainless steel, and non-ferrous materials. Its 3-flute design pushes chips forward, reducing clogging and breakage. It is commonly used in automotive, aerospace, and general machining applications requiring precise UNF threads.

What are the specifications of the OSG 2842900 tap?

The OSG 2842900 is a spiral point tap with thread size 1/2"-20 UNF, H11 / 2B tolerance, 3 flutes, and plug chamfer. It is an oversized tap for producing threads at the high end of the 2B class fit. The manufacturer part number is 2842900.

Where to buy OSG taps like 2842900 worldwide?

3G Electric supplies OSG taps including the 2842900 model to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this oversized spiral point tap for UNF threading applications.

How to select the correct OSG tap for UNF threads?

Select an OSG tap based on thread size (e.g., 1/2"-20 UNF), tolerance class (H11 for 2B fit), chamfer type (plug for through holes), and material. For oversized threads, use an H11 tap. Always match the tap to the hole type—spiral point for through holes, spiral flute for blind holes.

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
OSG Spiral Point Tap: 1/2"-20 UNF, H11 / 2B, 3 Flute, Plug Chamfer (MPN 2842908)
OSG
OSG Spiral Point Tap: 1/2"-20 UNF, H11 / 2B, 3 Flute, Plug Chamfer (MPN 2842908)
OSG Spiral Point Tap: 7/16"-20 UNF, H11, 3 Flute, Plug Chamfer (MPN 2843001)
OSG
OSG Spiral Point Tap: 7/16"-20 UNF, H11, 3 Flute, Plug Chamfer (MPN 2843001)
OSG Spiral Point Tap: 7/16"-20 UNF, H11, 3 Flute, Plug Chamfer (MPN 2843008)
OSG
OSG Spiral Point Tap: 7/16"-20 UNF, H11, 3 Flute, Plug Chamfer (MPN 2843008)
OSG Spiral Point Tap: 7/16"-20 UNF, H11, 3 Flute, Plug Chamfer (MPN 2843000)
OSG
OSG Spiral Point Tap: 7/16"-20 UNF, H11, 3 Flute, Plug Chamfer (MPN 2843000)
OSG Spiral Point Tap: 5/16"-24 UNF, H11, 3 Flute, Plug Chamfer (MPN 2841500)
OSG
OSG Spiral Point Tap: 5/16"-24 UNF, H11, 3 Flute, Plug Chamfer (MPN 2841500)
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)

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