Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

OSG 30203301 Spiral-Flute STI Tap, 9/16"-18 UNF, H3 / 2B-3B, 4 Flute - Spiral-Flute STI Taps for Steel & Stainless Steel
OSGSpiral-Flute STI Taps for Steel & Stainless Steel

OSG 30203301 Spiral-Flute STI Tap, 9/16"-18 UNF, H3 / 2B-3B, 4 Flute

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

SKU 3G-OTH-244353

Brand
OSG
Item
30203301 Spiral-Flute STI Tap, 9/16"-18 UNF, H3 / 2B-3B, 4 Flute
Category
Spiral-Flute STI Taps for Steel & Stainless Steel
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 — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

OSG
Manufacturer Part Number
30203301

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 Spiral-Flute STI Taps for Steel & Stainless Steel.

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept screw thread inserts. Thread size 3/4"-16 UNF, thread tolerance H3 / 2B-3B, 4-flute design. Used to create threads for helical coil inserts, providing stronger threads in softer base materials
OSG
Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept screw thread inserts. Thread size 3/4"-16 UNF, thread tolerance H3 / 2B-3B, 4-flute design. Used to create threads for helical coil inserts, providing stronger threads in softer base materials
Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept screw thread inserts. Features a 9/16"-18 UNF thread size, H3 / 2B-3B tolerance, and 4 flutes. The spiral flute design aids chip evacuation in through-hole applications
OSG
Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept screw thread inserts. Features a 9/16"-18 UNF thread size, H3 / 2B-3B tolerance, and 4 flutes. The spiral flute design aids chip evacuation in through-hole applications
Spiral-flute STI tap designed for cutting internal threads in steel and stainless steel for screw thread inserts. Features 4 flutes and thread tolerance H3 / 2B-3B. Used in applications requiring strong threads in hard materials
OSG
Spiral-flute STI tap designed for cutting internal threads in steel and stainless steel for screw thread inserts. Features 4 flutes and thread tolerance H3 / 2B-3B. Used in applications requiring strong threads in hard materials
Spiral-flute STI tap for cutting internal threads in steel and stainless steel for screw thread inserts. Thread size 9/16"-18 UNF with H4 / 2B-3B tolerance, 4 flutes. Used in applications requiring strong, replaceable threads
OSG
Spiral-flute STI tap for cutting internal threads in steel and stainless steel for screw thread inserts. Thread size 9/16"-18 UNF with H4 / 2B-3B tolerance, 4 flutes. Used in applications requiring strong, replaceable threads
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 in blind-hole applications
OSG
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 in blind-hole applications
Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. Thread size 9/16"-18 UNF, tolerance H4 / 2B-3B, 4 flutes. Used in applications requiring thread repair or reinforcement in demanding materials
OSG
Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. Thread size 9/16"-18 UNF, tolerance H4 / 2B-3B, 4 flutes. Used in applications requiring thread repair or reinforcement in demanding materials

More from OSG

View all OSG parts
OSG Screw Thread Insert STI Tap: Spiral Fute, M14x2 Metric, D5 / 4H-6H, 4 Flute (MPN 34301001)
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, M14x2 Metric, D5 / 4H-6H, 4 Flute (MPN 34301001)
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
OSG
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
OSG
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
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
OSG
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
OSG
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
OSG
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
OSG
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
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
OSG
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