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OSG Spiral-Flute STI Tap, 7/16"-20 UNF, H4 / 2B-3B, 2 Flute - Spiral-Flute STI Taps for Aluminum
OSGSpiral-Flute STI Taps for Aluminum

OSG Spiral-Flute STI Tap, 7/16"-20 UNF, H4 / 2B-3B, 2 Flute

OSG Spiral-Flute STI Taps for Aluminum.

SKU 3G-OTH-262349

Brand
OSG
Item
Spiral-Flute STI Tap, 7/16"-20 UNF, H4 / 2B-3B, 2 Flute
Category
Spiral-Flute STI Taps for Aluminum
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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
1303901208

Technical Documents

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

Product Description

OSG Spiral-Flute STI Taps for Aluminum.

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 the OSG Screw Thread Insert STI Tap used for?

This OSG spiral-flute STI tap is designed for cutting internal threads in aluminum and non-ferrous materials before installing screw 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 1303901208?

The OSG STI tap has a thread size of 7/16"-20 UNF, a ground thread tolerance of H4 / 2B-3B, and a 2-flute spiral-flute design for efficient chip evacuation. The manufacturer part number is 1303901208. It is optimized for tapping aluminum and other non-ferrous metals.

Where to buy OSG STI Taps worldwide?

3G Electric supplies OSG STI taps worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the OSG 1303901208 spiral-flute tap. We source and deliver to meet your production needs.

How to select the correct OSG STI tap for aluminum?

Select an STI tap with the same thread size and pitch as the insert you will install. For aluminum, use a spiral-flute design like this OSG 2-flute tap to clear chips. The H4 / 2B-3B tolerance ensures proper fit for the insert. Always match the tap to the material and thread class required.

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 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
Spiral-flute STI tap designed for cutting internal threads in aluminum for screw thread inserts. Suitable for through-hole applications, the spiral flute geometry evacuates chips upward to prevent clogging. Thread size 1/2"-20 UNF with H4 tolerance covering 2B-3B thread classes. 2-flute design
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Spiral-flute STI tap designed for cutting internal threads in aluminum for screw thread inserts. Suitable for through-hole applications, the spiral flute geometry evacuates chips upward to prevent clogging. Thread size 1/2"-20 UNF with H4 tolerance covering 2B-3B thread classes. 2-flute design
Spiral-flute STI tap for cutting internal threads in aluminum to accept helical wire thread inserts. Features a 1/2"-20 UNF thread size, H4 / 2B-3B tolerance, and 2-flute design. Used in applications requiring strong, wear-resistant threads in lightweight materials
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Spiral-flute STI tap for cutting internal threads in aluminum to accept helical wire thread inserts. Features a 1/2"-20 UNF thread size, H4 / 2B-3B tolerance, and 2-flute design. Used in applications requiring strong, wear-resistant threads in lightweight materials
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
OSG
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
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
OSG
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 to accept screw thread inserts. The 2-flute design optimizes chip evacuation. Thread size: 1/4"-20 UNC, tolerance H3 / 2B-3B
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This spiral-flute STI tap is designed for cutting internal threads in aluminum and non-ferrous materials to accept screw thread inserts. The 2-flute design optimizes chip evacuation. Thread size: 1/4"-20 UNC, tolerance H3 / 2B-3B

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
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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
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
Spiral-flute STI tap designed for cutting internal threads in aluminum and non-ferrous materials to accept helical wire thread inserts. Features a 3/8"-24 UNF thread size, H3 / 2B-3B tolerance, and 2-flute spiral-flute geometry for efficient chip evacuation. 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 and non-ferrous materials to accept helical wire thread inserts. Features a 3/8"-24 UNF thread size, H3 / 2B-3B tolerance, and 2-flute spiral-flute geometry for efficient chip evacuation. Suitable for applications requiring strong threads in softer base materials
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