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OSG Screw Thread Insert STI Tap: Spiral Fute, 9/16"-18 UNF, H3 / 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, 9/16"-18 UNF, H3 / 2B-3B

SKU 3G-OTH-244353

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 9/16"-18 UNF, H3 / 2B-3B
Category
Spiral-Flute STI Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
30203301
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

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

The OSG Screw Thread Insert STI Tap is used to cut internal threads in steel and stainless steel for installing screw thread inserts. Its spiral-flute design efficiently evacuates chips, making it ideal for blind-hole applications in automotive, aerospace, and general manufacturing.

What are the specifications of the OSG 30203301 STI Tap?

The OSG 30203301 is a spiral-flute STI tap with a 9/16"-18 UNF thread size, H3 / 2B-3B tolerance, and 4 flutes. It is designed for threading steel and stainless steel to accept screw thread inserts. The H3 / 2B-3B designation ensures precise fit for insert installation.

Where to buy OSG STI Taps worldwide?

You can source the OSG 30203301 STI Tap worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this and other OSG threading tools.

How to select the correct OSG STI Tap for an application?

Select the OSG STI Tap based on thread size (e.g., 9/16"-18 UNF), material (steel or stainless steel), and hole type (blind or through). The spiral-flute design suits blind holes. Ensure the tap tolerance (H3 / 2B-3B) matches the insert and thread class requirements for proper fit.

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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