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OSG Spiral Point Tap: #4-40 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer - General Purpose Spiral-Point Taps
OSGGeneral Purpose Spiral-Point Taps

OSG Spiral Point Tap: #4-40 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer

SKU 3G-OTH-214033

Brand
OSG
Item
Spiral Point Tap: #4-40 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer
Category
General Purpose Spiral-Point Taps
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Technical Specifications

OSG
Manufacturer Part Number
1211401
Type
H3 / 2B-3B, Plug Chamfer, Black Oxide High Speed Steel
Flute
2
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is OSG spiral point tap #4-40 UNC used for?

OSG spiral point taps are designed for through-hole threading in production environments. The #4-40 UNC size is common in precision machining, automotive, and electronics assembly. The plug chamfer and black oxide coating reduce friction and improve chip evacuation.

What are the specifications of OSG tap 1211401?

This OSG spiral point tap is #4-40 UNC with H3 / 2B-3B tolerance, 2 flutes, plug chamfer, and black oxide high-speed steel construction. It is a general-purpose tap for through-hole threading in ferrous and non-ferrous materials.

Where to buy OSG spiral point tap #4-40 UNC worldwide?

3G Electric supplies OSG taps worldwide, handling logistics, customs, and delivery. As a global industrial solutions provider, we source genuine OSG cutting tools and support procurement teams with technical guidance across 14 industrial departments.

How to select the correct tap for #4-40 UNC threads?

For #4-40 UNC threads, choose a tap with H3 tolerance for class 2B or 3B fit. OSG spiral point taps with plug chamfer are ideal for through-holes. Ensure the tap drill size matches the thread specification and use cutting fluid for black oxide HSS tools.

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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