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OSG Spiral-Flute STI Tap, 7/16"-20 UNF, H3 / 2B-3B, 3 Flute - Spiral-Flute STI Taps for Steel & Stainless Steel
OSGSpiral-Flute STI Taps for Steel & Stainless Steel

OSG Spiral-Flute STI Tap, 7/16"-20 UNF, H3 / 2B-3B, 3 Flute

OSG Spiral-Flute STI Taps for Steel & Stainless Steel.

SKU 3G-OTH-244280

Brand
OSG
Item
Spiral-Flute STI Tap, 7/16"-20 UNF, H3 / 2B-3B, 3 Flute
Category
Spiral-Flute STI Taps for Steel & Stainless Steel
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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
30202201

Technical Documents

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

Product Description

OSG Spiral-Flute STI Taps for Steel & Stainless Steel.

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 STI tap used for?

An OSG spiral-flute STI tap is used to cut internal threads in steel and stainless steel for screw thread inserts. The spiral flute design evacuates chips upward, making it ideal for blind-hole applications. This tap produces threads that accept STI inserts, commonly used in aerospace, automotive, and industrial maintenance.

What are the specifications of the OSG 30202201 STI tap?

The OSG 30202201 is a spiral-flute STI tap with thread size 7/16"-20 UNF, tolerance H3 / 2B-3B, and 3 flutes. It is designed for threading steel and stainless steel to accept screw thread inserts. The H3 / 2B-3B tolerance ensures precise fit for insert installation.

Where to buy OSG STI taps worldwide?

You can source OSG STI taps 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 the OSG 30202201 spiral-flute STI tap.

How to select the correct OSG STI tap for steel?

Select an OSG STI tap based on thread size, pitch, and material. For steel and stainless steel, use a spiral-flute design for blind holes. Verify the tap tolerance (e.g., H3 / 2B-3B) matches your required thread class. Always match the tap to the specific STI insert size you plan to install.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
This spiral-flute STI tap is designed for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. It features a 7/16"-20 UNF thread size, H3 / 2B-3B tolerance, and 3 flutes. Commonly used in applications requiring thread repair or reinforcement in metal components
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This spiral-flute STI tap is designed for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. It features a 7/16"-20 UNF thread size, H3 / 2B-3B tolerance, and 3 flutes. Commonly used in applications requiring thread repair or reinforcement in metal components
This spiral-flute STI tap is designed for cutting internal threads in steel and stainless steel to accept screw thread inserts. The spiral flute geometry aids chip evacuation, making it suitable for blind-hole threading. Thread size: 5/16"-24 UNF with H3 / 2B-3B tolerance, 3 flutes
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This spiral-flute STI tap is designed for cutting internal threads in steel and stainless steel to accept screw thread inserts. The spiral flute geometry aids chip evacuation, making it suitable for blind-hole threading. Thread size: 5/16"-24 UNF with H3 / 2B-3B tolerance, 3 flutes
Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept screw thread inserts. Thread size 5/16"-24 UNF with H3 / 2B-3B thread limit. Three-flute design for chip evacuation in blind-hole threading applications
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Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept screw thread inserts. Thread size 5/16"-24 UNF with H3 / 2B-3B thread limit. Three-flute design for chip evacuation in blind-hole threading applications
Spiral-flute STI tap for cutting internal threads in steel and stainless steel prior to installing screw thread inserts. Features a 7/16"-20 UNF thread size, H4 / 2B-3B tolerance, and 3-flute design for efficient chip evacuation. Suitable for applications requiring strong threads in materials that may not hold direct threads
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Spiral-flute STI tap for cutting internal threads in steel and stainless steel prior to installing screw thread inserts. Features a 7/16"-20 UNF thread size, H4 / 2B-3B tolerance, and 3-flute design for efficient chip evacuation. Suitable for applications requiring strong threads in materials that may not hold direct threads
Spiral-flute STI tap for cutting internal threads in steel and stainless steel prior to installing screw thread inserts. Thread size 7/16"-20 UNF with H4 pitch diameter tolerance for class 2B or 3B internal threads. 3-flute design aids chip evacuation. Used in general manufacturing applications requiring strong, wear-resistant threads
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Spiral-flute STI tap for cutting internal threads in steel and stainless steel prior to installing screw thread inserts. Thread size 7/16"-20 UNF with H4 pitch diameter tolerance for class 2B or 3B internal threads. 3-flute design aids chip evacuation. Used in general manufacturing applications requiring strong, wear-resistant threads
This spiral-flute STI tap is designed for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. With a 7/16"-14 UNC thread size, H3 / 2B-3B tolerance, and 3-flute design, it is suitable for applications requiring thread repair or reinforcement in demanding materials
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This spiral-flute STI tap is designed for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. With a 7/16"-14 UNC thread size, H3 / 2B-3B tolerance, and 3-flute design, it is suitable for applications requiring thread repair or reinforcement in demanding materials

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Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. Features a 5/8"-18 UNF thread, H3 / 2B-3B tolerance, and 4 flutes. The spiral flute design aids chip evacuation during threading operations
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Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. Features a 5/8"-18 UNF thread, H3 / 2B-3B tolerance, and 4 flutes. The spiral flute design aids chip evacuation during threading operations
Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. Features M2x0.4 metric thread, D2 / 2B-3B tolerance, and 2 flutes. Used in applications requiring thread repair or reinforcement in demanding materials
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Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. Features M2x0.4 metric thread, D2 / 2B-3B tolerance, and 2 flutes. Used in applications requiring thread repair or reinforcement in demanding materials
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Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. Thread size 3/8"-16 UNC, 3 flutes, tolerance class H4 / 2B-3B. Suitable for repair or reinforcement of threaded holes in demanding materials
Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. Features 5/16"-18 UNC thread size, H4 / 2B-3B tolerance, and 3 flutes. Used in applications such as automotive, aerospace, and heavy equipment repair where stripped threads must be restored
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Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. Features 5/16"-18 UNC thread size, H4 / 2B-3B tolerance, and 3 flutes. Used in applications such as automotive, aerospace, and heavy equipment repair where stripped threads must be restored
This OSG spiral-flute STI tap cuts internal threads in steel and stainless steel to accept helical wire thread inserts. It features a #10-24 UNC thread size, H2 / 2B-3B tolerance, and a 3-flute design. Suitable for thread repair and reinforcement in demanding applications
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This OSG spiral-flute STI tap cuts internal threads in steel and stainless steel to accept helical wire thread inserts. It features a #10-24 UNC thread size, H2 / 2B-3B tolerance, and a 3-flute design. Suitable for thread repair and reinforcement in demanding applications
Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. Features a 1"-8 UNC thread size, H6 / 2B-3B tolerance, and 4 flutes. The spiral flute design evacuates chips upward, making it suitable for blind-hole thread repair applications
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Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. Features a 1"-8 UNC thread size, H6 / 2B-3B tolerance, and 4 flutes. The spiral flute design evacuates chips upward, making it suitable for blind-hole thread repair applications
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Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. #8-32 UNC, H2 / 2B-3B tolerance, bottoming chamfer, 3 flutes. Manufacturer part number 0145208