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OSG 1/4"-20 UNC Oversized Spiral-Flute Tap - Oversized Spiral-Flute Taps
OSGOversized Spiral-Flute Taps

OSG 1/4"-20 UNC Oversized Spiral-Flute Tap

OSG Oversized Spiral-Flute Taps.

SKU 3G-OTH-211305

Brand
OSG
Item
1/4"-20 UNC Oversized Spiral-Flute Tap
Category
Oversized Spiral-Flute Taps
Available to Order
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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

OSG
Manufacturer Part Number
2940300

Technical Documents

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

Product Description

OSG Oversized Spiral-Flute Taps.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

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.

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Cross-referenced by specification & description
OSG oversized spiral-flute tap with 1/4"-20 UNC thread, H11 tolerance, 3 flutes, and modified bottoming chamfer. Designed for threading blind holes in steel and aluminum, the spiral flute lifts chips upward to prevent clogging. Suitable for general manufacturing applications requiring clean threads
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OSG oversized spiral-flute tap with 1/4"-20 UNC thread, H11 tolerance, 3 flutes, and modified bottoming chamfer. Designed for threading blind holes in steel and aluminum, the spiral flute lifts chips upward to prevent clogging. Suitable for general manufacturing applications requiring clean threads
OSG Spiral Flute Tap: 1/2"-20 UNF, H11 / 2B, 3 Flute, Modified Bottoming Chamfer (MPN 2943000)
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OSG Spiral Flute Tap: 1/2"-20 UNF, H11 / 2B, 3 Flute, Modified Bottoming Chamfer (MPN 2943000)
Oversized spiral-flute tap for threading blind holes. Spiral flute design evacuates chips upward to prevent clogging. Modified bottoming chamfer allows threading close to hole bottom. Thread size 5/16"-18 UNC, H11 tolerance, 3 flutes
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Oversized spiral-flute tap for threading blind holes. Spiral flute design evacuates chips upward to prevent clogging. Modified bottoming chamfer allows threading close to hole bottom. Thread size 5/16"-18 UNC, H11 tolerance, 3 flutes
Oversized spiral-flute tap for threading blind holes. Spiral flute design evacuates chips upward to prevent clogging. Modified bottoming chamfer allows threading close to hole bottom. Thread size 1/2"-20 UNF, thread limit H11 / 2B, 3 flutes
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Oversized spiral-flute tap for threading blind holes. Spiral flute design evacuates chips upward to prevent clogging. Modified bottoming chamfer allows threading close to hole bottom. Thread size 1/2"-20 UNF, thread limit H11 / 2B, 3 flutes
This oversized spiral-flute tap is designed for threading blind holes in ferrous and non-ferrous materials. The spiral flute geometry pushes chips upward, preventing clogging and ensuring clean threads. With a modified bottoming chamfer, it is suitable for threading close to the bottom of a hole. The H11 tolerance provides precise thread sizing
OSG
This oversized spiral-flute tap is designed for threading blind holes in ferrous and non-ferrous materials. The spiral flute geometry pushes chips upward, preventing clogging and ensuring clean threads. With a modified bottoming chamfer, it is suitable for threading close to the bottom of a hole. The H11 tolerance provides precise thread sizing
OSG Spiral Flute Tap: 3/8"-16 UNC, H11 / 2B, 3 Flute, Modified Bottoming Chamfer (MPN 2941908)
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OSG Spiral Flute Tap: 3/8"-16 UNC, H11 / 2B, 3 Flute, Modified Bottoming Chamfer (MPN 2941908)

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Oversized spiral-flute tap for threading blind holes in materials that produce stringy chips, such as steel and aluminum. The spiral flute design lifts chips out of the hole to prevent clogging. Thread size 5/16-24 UNF, H11 tolerance, 3 flutes, modified bottoming chamfer. Suitable for applications requiring a looser thread fit
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Oversized spiral-flute tap for threading blind holes in materials that produce stringy chips, such as steel and aluminum. The spiral flute design lifts chips out of the hole to prevent clogging. Thread size 5/16-24 UNF, H11 tolerance, 3 flutes, modified bottoming chamfer. Suitable for applications requiring a looser thread fit
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This OSG spiral-flute tap is designed for threading blind holes in materials such as steel and aluminum. The spiral flute geometry pushes chips upward, preventing clogging and ensuring clean threads. With a #10-32 UNF thread size, H11 tolerance, and modified bottoming chamfer, it is suited for precision threading applications where chip evacuation and thread accuracy are required
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This OSG spiral-flute tap is designed for threading blind holes in materials such as steel and aluminum. The spiral flute geometry pushes chips upward, preventing clogging and ensuring clean threads. With a #10-32 UNF thread size, H11 tolerance, and modified bottoming chamfer, it is suited for precision threading applications where chip evacuation and thread accuracy are required
This OSG spiral-flute tap is designed for threading blind holes in materials such as steel and aluminum. The spiral flute geometry pushes chips upward, preventing clogging and ensuring clean threads. With a modified bottoming chamfer, it is suited for applications requiring threads close to the hole bottom. Thread size: 7/16"-20 UNF, tolerance H11, 3 flutes
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This OSG spiral-flute tap is designed for threading blind holes in materials such as steel and aluminum. The spiral flute geometry pushes chips upward, preventing clogging and ensuring clean threads. With a modified bottoming chamfer, it is suited for applications requiring threads close to the hole bottom. Thread size: 7/16"-20 UNF, tolerance H11, 3 flutes
This OSG spiral-flute tap is designed for threading blind holes in ferrous and non-ferrous materials. The spiral flute geometry pushes chips upward, preventing clogging and ensuring clean threads. With a #10-24 UNC thread size, H11 tolerance, 3 flutes, and a modified bottoming chamfer, it is suited for applications requiring threads close to the hole bottom
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This OSG spiral-flute tap is designed for threading blind holes in ferrous and non-ferrous materials. The spiral flute geometry pushes chips upward, preventing clogging and ensuring clean threads. With a #10-24 UNC thread size, H11 tolerance, 3 flutes, and a modified bottoming chamfer, it is suited for applications requiring threads close to the hole bottom
This OSG spiral-flute tap is designed for threading blind holes in materials such as steel and stainless steel. The spiral flute geometry evacuates chips upward, preventing clogging and ensuring clean threads. With a modified bottoming chamfer, it allows threading close to the bottom of a hole. The D11 / 6H tolerance indicates an oversized thread suitable for use with coated or plated holes
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This OSG spiral-flute tap is designed for threading blind holes in materials such as steel and stainless steel. The spiral flute geometry evacuates chips upward, preventing clogging and ensuring clean threads. With a modified bottoming chamfer, it allows threading close to the bottom of a hole. The D11 / 6H tolerance indicates an oversized thread suitable for use with coated or plated holes
This OSG oversized spiral-flute tap features an M8x1.25 metric thread with D11 / 6H tolerance, 3 flutes, and a modified bottoming chamfer. Designed for threading blind holes, the spiral flute geometry lifts chips upward to prevent clogging and ensure clean threads. Suitable for precision threading applications in ferrous and non-ferrous materials
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This OSG oversized spiral-flute tap features an M8x1.25 metric thread with D11 / 6H tolerance, 3 flutes, and a modified bottoming chamfer. Designed for threading blind holes, the spiral flute geometry lifts chips upward to prevent clogging and ensure clean threads. Suitable for precision threading applications in ferrous and non-ferrous materials
Oversized spiral-flute tap for threading blind holes. Features a 3/8"-24 UNF thread, H11 tolerance, 3 flutes, and a modified bottoming chamfer. The spiral flute design pushes chips upward to prevent clogging, enabling clean threads near the hole bottom. Suitable for industrial machining applications
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Oversized spiral-flute tap for threading blind holes. Features a 3/8"-24 UNF thread, H11 tolerance, 3 flutes, and a modified bottoming chamfer. The spiral flute design pushes chips upward to prevent clogging, enabling clean threads near the hole bottom. Suitable for industrial machining applications