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OSG Spiral-Flute STI Tap, 3/8"-24 UNF, H3 / 2B-3B, 2 Flute - Spiral-Flute STI Taps for Aluminum
OSGSpiral-Flute STI Taps for Aluminum

OSG Spiral-Flute STI Tap, 3/8"-24 UNF, H3 / 2B-3B, 2 Flute

OSG Spiral-Flute STI Taps for Aluminum.

SKU 3G-OTH-262353

Brand
OSG
Item
Spiral-Flute STI Tap, 3/8"-24 UNF, H3 / 2B-3B, 2 Flute
Category
Spiral-Flute STI Taps for Aluminum
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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
1303901100

Technical Documents

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

Product Description

OSG Spiral-Flute STI Taps for Aluminum.

Frequently Asked Questions

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

An OSG Screw Thread Insert STI Tap cuts internal threads in aluminum and non-ferrous materials to accept helical wire thread inserts. It is commonly used in aerospace, automotive, and general manufacturing where strong, wear-resistant threads are required in softer base materials.

What are the specifications of the OSG STI Tap 3/8"-24 UNF?

This OSG STI Tap has a 3/8"-24 UNF thread size, H3 / 2B-3B tolerance, and a spiral-flute design with 2 flutes. It is designed for threading holes that will receive screw thread inserts in aluminum and similar materials. The manufacturer part number is 1303901100.

Where to buy OSG STI Taps for aluminum worldwide?

3G Electric supplies OSG STI Taps like the 3/8"-24 UNF spiral-flute model to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this and other OSG threading tools.

How to select the correct STI tap size for a thread insert?

Select an STI tap that matches the thread size and pitch of the insert you plan to install. For example, a 3/8"-24 UNF STI tap is used with a corresponding 3/8"-24 UNF thread insert. Always verify the tap tolerance (e.g., H3) matches your required thread class (2B or 3B).

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 aluminum. 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 aluminum and non-ferrous materials prior to installing screw thread inserts. It features a 5/16-24 UNF thread size with H3 / 2B-3B thread limit and a 2-flute design optimized for chip evacuation. Typical applications include aerospace, automotive, and general manufacturing where thread reinforcement is needed
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This spiral-flute STI tap is designed for cutting internal threads in aluminum and non-ferrous materials prior to installing screw thread inserts. It features a 5/16-24 UNF thread size with H3 / 2B-3B thread limit and a 2-flute design optimized for chip evacuation. Typical applications include aerospace, automotive, and general manufacturing where thread reinforcement is needed
This spiral-flute STI tap is designed for cutting internal threads in aluminum and non-ferrous materials prior to installing screw thread inserts. The 2-flute design provides efficient chip evacuation. Thread size: 5/16"-24 UNF, thread limit: H3 / 2B-3B
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This spiral-flute STI tap is designed for cutting internal threads in aluminum and non-ferrous materials prior to installing screw thread inserts. The 2-flute design provides efficient chip evacuation. Thread size: 5/16"-24 UNF, thread limit: H3 / 2B-3B
Spiral-flute STI tap designed for cutting internal threads in aluminum to accept helical wire thread inserts. Sized 3/8"-16 UNC with thread class H3 / 2B-3B and 2 flutes for through-hole threading. Suitable for applications requiring strong threads in softer base materials
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Spiral-flute STI tap designed for cutting internal threads in aluminum to accept helical wire thread inserts. Sized 3/8"-16 UNC with thread class H3 / 2B-3B and 2 flutes for through-hole threading. Suitable for applications requiring strong threads in softer base materials
Spiral-flute tap for cutting internal threads in aluminum for helical wire thread inserts. Designed for through-hole threading with 2 flutes. Thread size 3/8"-16 UNC, thread limit H3 / 2B-3B. Suitable for applications requiring strong threads in softer base materials
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Spiral-flute tap for cutting internal threads in aluminum for helical wire thread inserts. Designed for through-hole threading with 2 flutes. Thread size 3/8"-16 UNC, thread limit H3 / 2B-3B. Suitable for applications requiring strong threads in softer base materials
This spiral-flute STI tap is designed for cutting internal threads in aluminum and non-ferrous materials. It creates threads that accept screw thread inserts (STI) for thread repair or reinforcement. With a 5/16"-18 UNC thread size, H3 / 2B-3B tolerance, and 2-flute design, it provides efficient chip evacuation
OSG
This spiral-flute STI tap is designed for cutting internal threads in aluminum and non-ferrous materials. It creates threads that accept screw thread inserts (STI) for thread repair or reinforcement. With a 5/16"-18 UNC thread size, H3 / 2B-3B tolerance, and 2-flute design, it provides efficient chip evacuation
This spiral-flute STI tap is designed for cutting internal threads in aluminum for screw thread inserts. It is intended for through-hole applications, with spiral flutes that evacuate chips upward to prevent clogging. Thread size: 1/4"-28 UNF, thread limit: H3 / 2B-3B, 2 flutes
OSG
This spiral-flute STI tap is designed for cutting internal threads in aluminum for screw thread inserts. It is intended for through-hole applications, with spiral flutes that evacuate chips upward to prevent clogging. Thread size: 1/4"-28 UNF, thread limit: H3 / 2B-3B, 2 flutes

More from OSG

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This spiral-flute STI tap is designed for cutting internal threads in aluminum to accept helical wire thread inserts. It features a #2-56 UNC thread size, H2 / 2B-3B tolerance, and 2 flutes. Common applications include repairing or reinforcing tapped holes in aluminum components
OSG
This spiral-flute STI tap is designed for cutting internal threads in aluminum to accept helical wire thread inserts. It features a #2-56 UNC thread size, H2 / 2B-3B tolerance, and 2 flutes. Common applications include repairing or reinforcing tapped holes in aluminum components
Spiral-flute STI tap for cutting internal threads in aluminum and similar materials to accept helical wire thread inserts. Features #8-32 UNC thread size, H2 / 2B-3B tolerance, and 2-flute design. Used in applications requiring thread reinforcement or repair without replacing the parent component
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Spiral-flute STI tap for cutting internal threads in aluminum and similar materials to accept helical wire thread inserts. Features #8-32 UNC thread size, H2 / 2B-3B tolerance, and 2-flute design. Used in applications requiring thread reinforcement or repair without replacing the parent component
OSG Screw Thread Insert STI Tap: Spiral Fute, #10-32 UNF, H2 / 2B-3B, 2 Flute (MPN 1303900500)
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OSG Screw Thread Insert STI Tap: Spiral Fute, #10-32 UNF, H2 / 2B-3B, 2 Flute (MPN 1303900500)
This OSG spiral-flute STI tap is designed for cutting internal threads in aluminum to accept screw thread inserts. It features a 3/8-24 UNF thread size, H3 / 2B-3B tolerance, and 2 spiral flutes. Suitable for through-hole applications, it produces threads that accommodate helical coil inserts for enhanced thread strength in soft materials
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This OSG spiral-flute STI tap is designed for cutting internal threads in aluminum to accept screw thread inserts. It features a 3/8-24 UNF thread size, H3 / 2B-3B tolerance, and 2 spiral flutes. Suitable for through-hole applications, it produces threads that accommodate helical coil inserts for enhanced thread strength in soft materials
This spiral-flute STI tap is designed for cutting internal threads in aluminum and non-ferrous metals to accept helical coil screw thread inserts. It is intended for through-hole applications. The tap features a 5/16"-18 UNC thread size, H3 / 2B-3B tolerance, and 2 flutes
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This spiral-flute STI tap is designed for cutting internal threads in aluminum and non-ferrous metals to accept helical coil screw thread inserts. It is intended for through-hole applications. The tap features a 5/16"-18 UNC thread size, H3 / 2B-3B tolerance, and 2 flutes
Spiral-flute STI tap for cutting internal threads in aluminum and non-ferrous materials to accept helical wire thread inserts. Features #8-32 UNC thread size, H2 / 2B-3B tolerance, and 2-flute design. Used in applications requiring thread repair or reinforcement without replacing the parent component
OSG
Spiral-flute STI tap for cutting internal threads in aluminum and non-ferrous materials to accept helical wire thread inserts. Features #8-32 UNC thread size, H2 / 2B-3B tolerance, and 2-flute design. Used in applications requiring thread repair or reinforcement without replacing the parent component
This OSG spiral-flute STI tap is designed for cutting internal threads in aluminum and other non-ferrous materials to accept helical screw thread inserts. It features a 1/4"-20 UNC thread size with H3 / 2B-3B thread limit and a 2-flute design for efficient chip evacuation
OSG
This OSG spiral-flute STI tap is designed for cutting internal threads in aluminum and other non-ferrous materials to accept helical screw thread inserts. It features a 1/4"-20 UNC thread size with H3 / 2B-3B thread limit and a 2-flute design for efficient chip evacuation
This spiral-flute STI tap is designed for threading holes in aluminum that will receive screw thread inserts. It features a 7/16"-20 UNF thread, H4 / 2B-3B tolerance, and 2 flutes. The H4 tolerance ensures proper fit for the insert. Commonly used in applications requiring reliable threads in softer materials
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This spiral-flute STI tap is designed for threading holes in aluminum that will receive screw thread inserts. It features a 7/16"-20 UNF thread, H4 / 2B-3B tolerance, and 2 flutes. The H4 tolerance ensures proper fit for the insert. Commonly used in applications requiring reliable threads in softer materials