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OSG Spiral Point Tap: 5/16"-18 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer - General Purpose Spiral-Point Taps
OSGGeneral Purpose Spiral-Point Taps

OSG Spiral Point Tap: 5/16"-18 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer

The OSG Spiral Point Tap (5/16"-18 UNC, MPN 1230800) is a general-purpose spiral-point tap with an H3 / 2B-3B tolerance, 2-flute design, plug chamfer, and high-speed steel construction. 3G Electric sources this…

SKU 3G-OTH-215055

Brand
OSG
Item
Spiral Point Tap: 5/16"-18 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer
Category
General Purpose Spiral-Point Taps
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Local availability & support

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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

OSG
Manufacturer Part Number
1230800
Type
H3 / 2B-3B, Plug Chamfer, High Speed Steel
Flute
2

Technical Documents

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

Product Description

The OSG Spiral Point Tap (5/16"-18 UNC, MPN 1230800) is a general-purpose spiral-point tap with an H3 / 2B-3B tolerance, 2-flute design, plug chamfer, and high-speed steel construction. 3G Electric sources this genuine OSG cutting tool across 14 industrial departments, with specialist expertise in combustion, pumps, and controls ensuring accurate specification and supply.

Frequently Asked Questions

What is an OSG spiral point tap used for?

An OSG spiral point tap is used for through-hole threading in production machining. Its spiral-point design pushes chips ahead, reducing chip clogging and tap breakage. It is ideal for high-speed tapping in steel, aluminum, and cast iron across automotive, aerospace, and general manufacturing.

What are the specifications of the OSG 5/16"-18 UNC spiral point tap?

This OSG tap has a 5/16"-18 UNC thread, H3 / 2B-3B tolerance, 2 flutes, plug chamfer, and is made of high-speed steel. The manufacturer part number is 1230800. It is designed for general-purpose through-hole tapping in a wide range of materials.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps worldwide, handling full logistics and customs clearance. As a global industrial sourcing partner, we provide genuine OSG cutting tools like the 5/16"-18 UNC spiral point tap. Contact us for pricing and delivery to your location.

How to select the right OSG tap for a job?

Select an OSG tap based on thread size, pitch, hole type (through or blind), material, and tolerance class. For through holes, a spiral point tap like this 5/16"-18 UNC plug chamfer is ideal. Match the H limit to your required thread class (e.g., H3 for 2B-3B).

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
OSG Spiral Point Tap: 1/4"-20 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 1230000)
OSG
OSG Spiral Point Tap: 1/4"-20 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 1230000)
OSG Spiral Point Tap: 1/4"-20 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 1230200)
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OSG Spiral Point Tap: 1/4"-20 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 1230200)
OSG Spiral Point Tap: 1/4"-20 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 1225000)
OSG
OSG Spiral Point Tap: 1/4"-20 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 1225000)
OSG Spiral Point Tap: 5/16"-18 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1230801)
OSG
OSG Spiral Point Tap: 5/16"-18 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1230801)
OSG Spiral Point Tap: 3/8"-16 UNC, H2 / 2B-3B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 1226600)
OSG
OSG Spiral Point Tap: 3/8"-16 UNC, H2 / 2B-3B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 1226600)
OSG Spiral Point Tap: 1/4"-20 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1230001)
OSG
OSG Spiral Point Tap: 1/4"-20 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1230001)

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OSG Spiral Point Tap: #12-24 UNC, 2B, 2 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 2886801)
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