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OSG Spiral Point Tap: #4-40 UNC, H4 / 2B-3B, 2 Flute - General Purpose Spiral-Point Taps
OSGGeneral Purpose Spiral-Point Taps

OSG Spiral Point Tap: #4-40 UNC, H4 / 2B-3B, 2 Flute

SKU 3G-OTH-216008

Brand
OSG
Item
Spiral Point Tap: #4-40 UNC, H4 / 2B-3B, 2 Flute
Category
General Purpose Spiral-Point Taps
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Technical Specifications

OSG
Manufacturer Part Number
2816300
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is the OSG Spiral Point Tap #4-40 UNC used for?

The OSG Spiral Point Tap #4-40 UNC is a general-purpose tap designed for through-hole threading in ferrous and non-ferrous materials. Its spiral-point design pushes chips forward, reducing chip clogging and enabling faster threading in production environments.

What are the specifications of the OSG Spiral Point Tap #4-40 UNC?

The OSG Spiral Point Tap has a #4-40 UNC thread size, H4 / 2B-3B tolerance class, 2-flute design, and plug chamfer. The manufacturer part number is 2816300. It is suitable for general-purpose through-hole tapping in a range of materials.

Where to buy the OSG Spiral Point Tap #4-40 UNC worldwide?

3G Electric supplies the OSG Spiral Point Tap #4-40 UNC 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 this OSG tap.

How to select the correct OSG Spiral Point Tap for through-hole threading?

Select an OSG spiral point tap for through-hole applications where chips must be pushed ahead of the tap. Match the tap's thread size, pitch, and tolerance class (e.g., H4 / 2B-3B) to your hole specifications. Use a plug chamfer for general-purpose threading.

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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