We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

3G Electric
RFQ CartGet a QuoteSign inSign up
OSG 1/4"-28 UNF Spiral-Flute STI Tap for Aluminum, H3 / 2B-3B, 2 Flute - Spiral-Flute STI Taps for Aluminum
OSGSpiral-Flute STI Taps for Aluminum

OSG 1/4"-28 UNF Spiral-Flute STI Tap for Aluminum, H3 / 2B-3B, 2 Flute

OSG Spiral-Flute STI Taps for Aluminum.

SKU 3G-OTH-262358

Brand
OSG
Item
1/4"-28 UNF Spiral-Flute STI Tap for Aluminum, H3 / 2B-3B, 2 Flute
Category
Spiral-Flute STI Taps for Aluminum
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 — 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
1303900708

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 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 an OSG spiral-flute STI tap used for?

An OSG spiral-flute STI tap is used to cut internal threads in aluminum for screw thread inserts. It is designed for through-hole applications, with spiral flutes that evacuate chips upward, preventing clogging and ensuring clean threads in softer materials like aluminum.

What are the specifications of the OSG 1/4"-28 UNF STI tap?

The OSG STI tap has a thread size of 1/4"-28 UNF, a thread limit of H3 / 2B-3B, and 2 flutes. It is a spiral-flute design for aluminum. The manufacturer part number is 1303900708. It is used to prepare holes for screw thread inserts.

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 this OSG spiral-flute STI tap.

How to select the correct STI tap for aluminum?

Select an STI tap with spiral flutes for aluminum to ensure chip evacuation. Match the thread size (e.g., 1/4"-28 UNF) and thread limit (e.g., H3 / 2B-3B) to your insert requirements. Use a tap designed for softer materials to avoid galling and achieve accurate threads.

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Compatible alternatives & equivalents

Cross-referenced by specification & description
Spiral-flute STI tap designed for cutting internal threads in aluminum to accept screw thread inserts. Suitable for through-hole applications, the spiral flute design evacuates chips upward to prevent clogging. Thread size 1/4"-28 UNF, H3 / 2B-3B tolerance, 2 flutes
OSG
Spiral-flute STI tap designed for cutting internal threads in aluminum to accept screw thread inserts. Suitable for through-hole applications, the spiral flute design evacuates chips upward to prevent clogging. Thread size 1/4"-28 UNF, H3 / 2B-3B tolerance, 2 flutes
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
OSG
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
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. 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
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
OSG
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

More from OSG

View all OSG parts →
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
OSG
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)
OSG
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
OSG
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
OSG
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
OSG
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