We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

OSG Spiral Flute Tap: 1/4"-20 UNC, H11, 3 Flute, Modified Bottoming Chamfer (MPN 2940300) - Oversized Spiral-Flute Taps
OSGOversized Spiral-Flute Taps

OSG Spiral Flute Tap: 1/4"-20 UNC, H11, 3 Flute, Modified Bottoming Chamfer (MPN 2940300)

OSG Oversized Spiral-Flute Taps.

SKU 3G-OTH-211305

Brand
OSG
Item
Spiral Flute Tap: 1/4"-20 UNC, H11, 3 Flute, Modified Bottoming Chamfer
Category
Oversized Spiral-Flute Taps
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Delivery
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
2940300

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

OSG Oversized Spiral-Flute Taps.

Frequently Asked Questions

What is an OSG spiral flute tap used for?

An OSG spiral flute tap is used for threading blind holes in materials like steel and aluminum. Its spiral design pushes chips upward, preventing clogging and ensuring clean threads. This 1/4"-20 UNC tap with a modified bottoming chamfer is ideal for through-hole or near-bottom threading in industrial machining.

What are the specifications of the OSG 2940300 tap?

The OSG 2940300 is a spiral flute tap with a 1/4"-20 UNC thread size, H11 tolerance, 3 flutes, and a modified bottoming chamfer. It is an oversized tap designed for threading applications where standard taps may not achieve the required fit. The manufacturer part number is 2940300.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps worldwide, handling logistics, customs, and delivery to your facility. As a global industrial solutions provider, we source genuine OSG cutting tools like the 2940300 spiral flute tap. Contact us for availability and lead time on this and other threading tools.

How to select the right OSG tap for a blind hole?

For blind holes, choose a spiral flute tap like the OSG 2940300 to evacuate chips upward. Ensure the thread size (1/4"-20 UNC), chamfer type (modified bottoming), and tolerance (H11) match your material and depth requirements. Consult OSG's technical data for optimal speeds and feeds.

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-flute taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
OSG Spiral Flute Tap: 1/4"-20 UNC, H11, 3 Flute, Modified Bottoming Chamfer (MPN 2940308)
OSG
OSG Spiral Flute Tap: 1/4"-20 UNC, H11, 3 Flute, Modified Bottoming Chamfer (MPN 2940308)
OSG Spiral Flute Tap: 1/2"-20 UNF, H11 / 2B, 3 Flute, Modified Bottoming Chamfer (MPN 2943000)
OSG
OSG Spiral Flute Tap: 1/2"-20 UNF, H11 / 2B, 3 Flute, Modified Bottoming Chamfer (MPN 2943000)
OSG Spiral Flute Tap: 5/16"-18 UNC, H11, 3 Flute, Modified Bottoming Chamfer (MPN 2941108)
OSG
OSG Spiral Flute Tap: 5/16"-18 UNC, H11, 3 Flute, Modified Bottoming Chamfer (MPN 2941108)
OSG Spiral Flute Tap: 1/2"-20 UNF, H11 / 2B, 3 Flute, Modified Bottoming Chamfer (MPN 2943008)
OSG
OSG Spiral Flute Tap: 1/2"-20 UNF, H11 / 2B, 3 Flute, Modified Bottoming Chamfer (MPN 2943008)
OSG Spiral Flute Tap: 5/16"-18 UNC, H11, 3 Flute, Modified Bottoming Chamfer (MPN 2941100)
OSG
OSG Spiral Flute Tap: 5/16"-18 UNC, H11, 3 Flute, Modified Bottoming Chamfer (MPN 2941100)
OSG Spiral Flute Tap: 3/8"-16 UNC, H11 / 2B, 3 Flute, Modified Bottoming Chamfer (MPN 2941908)
OSG
OSG Spiral Flute Tap: 3/8"-16 UNC, H11 / 2B, 3 Flute, Modified Bottoming Chamfer (MPN 2941908)

More from OSG

View all OSG parts
OSG Spiral Flute Tap: M6x1 Metric, D11 / 6H, 3 Flute, Modified Bottoming Chamfer (MPN 2993901)
OSG
OSG Spiral Flute Tap: M6x1 Metric, D11 / 6H, 3 Flute, Modified Bottoming Chamfer (MPN 2993901)
OSG Spiral Flute Tap: M8x1.25 Metric, D11 / 6H, 3 Flute, Modified Bottoming Chamfer (MPN 2994501)
OSG
OSG Spiral Flute Tap: M8x1.25 Metric, D11 / 6H, 3 Flute, Modified Bottoming Chamfer (MPN 2994501)
OSG Spiral Flute Tap: M12x1.75 Metric, D11 / 6H, 3 Flute, Modified Bottoming Chamfer (MPN 2995701)
OSG
OSG Spiral Flute Tap: M12x1.75 Metric, D11 / 6H, 3 Flute, Modified Bottoming Chamfer (MPN 2995701)
OSG Spiral Flute Tap: M12x1.5 Metric, D11 / 6H, 3 Flute, Modified Bottoming Chamfer (MPN 2995501)
OSG
OSG Spiral Flute Tap: M12x1.5 Metric, D11 / 6H, 3 Flute, Modified Bottoming Chamfer (MPN 2995501)
OSG Spiral Flute Tap: M12x1.25 Metric, D11 / 6H, 3 Flute, Modified Bottoming Chamfer (MPN 2995201)
OSG
OSG Spiral Flute Tap: M12x1.25 Metric, D11 / 6H, 3 Flute, Modified Bottoming Chamfer (MPN 2995201)
OSG Spiral Flute Tap: M10x1 Metric, D11 / 6H, 3 Flute, Modified Bottoming Chamfer (MPN 2994701)
OSG
OSG Spiral Flute Tap: M10x1 Metric, D11 / 6H, 3 Flute, Modified Bottoming Chamfer (MPN 2994701)
OSG Spiral Flute Tap: M8x1 Metric, D11 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2994301)
OSG
OSG Spiral Flute Tap: M8x1 Metric, D11 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2994301)
OSG Spiral Flute Tap: M10x1.5 Metric, D11 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 2995101)
OSG
OSG Spiral Flute Tap: M10x1.5 Metric, D11 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 2995101)