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OSG Screw Thread Insert STI Tap: Spiral Fute, 7/8"-14 UNF, H4 / 2B-3B - Spiral-Flute STI Taps for Steel & Stainless Steel
OSGSpiral-Flute STI Taps for Steel & Stainless Steel

OSG Screw Thread Insert STI Tap: Spiral Fute, 7/8"-14 UNF, H4 / 2B-3B

SKU 3G-OTH-244231

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 7/8"-14 UNF, H4 / 2B-3B
Category
Spiral-Flute STI Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
30205901
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is an OSG Screw Thread Insert STI Tap used for?

An OSG Screw Thread Insert STI Tap is used to pre-tap holes for helical wire thread inserts in steel and stainless steel. The spiral-flute design evacuates chips upward, making it ideal for blind-hole applications where chip clearance is critical.

What are the specifications of the OSG STI Tap 7/8"-14 UNF?

This OSG STI Tap has a 7/8"-14 UNF thread size, H4 / 2B-3B tolerance, and 4 flutes. It is a spiral-flute tap designed for steel and stainless steel. The manufacturer part number is 30205901.

Where to buy OSG STI Taps worldwide?

3G Electric supplies OSG STI Taps worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us to source this 7/8"-14 UNF spiral-flute tap for your threading application.

How to select the correct STI tap for thread inserts?

Select an STI tap that matches the thread insert size and material. For steel and stainless steel, use a spiral-flute tap like this OSG model for blind holes. Verify the thread class (H4 / 2B-3B) and flute count to ensure proper chip evacuation and thread quality.

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

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