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OSG Spiral-Flute STI Tap, 1"-12 UNF, H4 / 2B-3B, 4 Flute, 31504201 - Spiral-Flute STI Taps for Multiple Materials
OSGSpiral-Flute STI Taps for Multiple Materials

OSG Spiral-Flute STI Tap, 1"-12 UNF, H4 / 2B-3B, 4 Flute, 31504201

OSG Spiral-Flute STI Taps for Multiple Materials.

SKU 3G-OTH-281081

Brand
OSG
Item
Spiral-Flute STI Tap, 1"-12 UNF, H4 / 2B-3B, 4 Flute, 31504201
Category
Spiral-Flute STI Taps for Multiple Materials
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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
31504201

Technical Documents

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

Product Description

OSG Spiral-Flute STI Taps for Multiple Materials.

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 used to cut internal threads in multiple materials for installing screw thread inserts. It is commonly applied in aerospace, automotive, and general manufacturing where strong, replaceable threads are required in aluminum, steel, and cast iron.

What are the specifications of the OSG STI Tap 31504201?

The OSG STI tap has a 1"-12 UNF thread size, H4 / 2B-3B tolerance, and 4 flutes with a spiral flute design. The manufacturer part number is 31504201. It is designed for multiple materials and produces threads that accept standard screw thread inserts.

Where to buy OSG STI Tap 31504201 worldwide?

You can source the OSG STI Tap 31504201 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this spiral-flute tap.

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

Select an OSG STI tap based on the thread size and pitch of the insert, such as 1"-12 UNF. Ensure the tap tolerance (H4 / 2B-3B) matches the required thread class. For multiple materials, a spiral-flute design helps evacuate chips. Always verify the insert manufacturer's recommended tap drill size.

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 multiple materials. 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 multiple materials prior to installing screw thread inserts. The 1"-12 UNF thread size with H4 / 2B-3B tolerance ensures proper fit for insert installation. The 4-flute design aids chip evacuation. Typical applications include thread repair and reinforcement in general manufacturing
OSG
This spiral-flute STI tap is designed for cutting internal threads in multiple materials prior to installing screw thread inserts. The 1"-12 UNF thread size with H4 / 2B-3B tolerance ensures proper fit for insert installation. The 4-flute design aids chip evacuation. Typical applications include thread repair and reinforcement in general manufacturing
Spiral-flute STI tap for cutting internal threads in multiple materials to accept screw thread inserts. Features a 1"-12 UNF thread size, H6 / 2B-3B tolerance, and 4-flute design. Suitable for applications requiring thread repair or reinforcement
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Spiral-flute STI tap for cutting internal threads in multiple materials to accept screw thread inserts. Features a 1"-12 UNF thread size, H6 / 2B-3B tolerance, and 4-flute design. Suitable for applications requiring thread repair or reinforcement
Spiral-flute STI tap for cutting internal threads in multiple materials to accept screw thread inserts. Features a 1"-12 UNF thread size, H6 / 2B-3B tolerance, and 4-flute design. Suitable for applications requiring strong threads in softer base materials
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Spiral-flute STI tap for cutting internal threads in multiple materials to accept screw thread inserts. Features a 1"-12 UNF thread size, H6 / 2B-3B tolerance, and 4-flute design. Suitable for applications requiring strong threads in softer base materials
Spiral-flute STI tap for cutting internal threads in multiple materials to accept helical wire thread inserts. Features 7/8"-14 UNF thread, H4 / 2B-3B tolerance, and 4 flutes. Used in applications requiring thread repair or reinforcement
OSG
Spiral-flute STI tap for cutting internal threads in multiple materials to accept helical wire thread inserts. Features 7/8"-14 UNF thread, H4 / 2B-3B tolerance, and 4 flutes. Used in applications requiring thread repair or reinforcement
This OSG spiral-flute STI tap is designed for cutting internal threads in multiple materials to accommodate helical screw thread inserts. The spiral flute design aids chip evacuation, making it suitable for both through-hole and blind-hole applications. Thread size: 1/2"-20 UNF, tolerance H4 / 2B-3B, with 3 flutes
OSG
This OSG spiral-flute STI tap is designed for cutting internal threads in multiple materials to accommodate helical screw thread inserts. The spiral flute design aids chip evacuation, making it suitable for both through-hole and blind-hole applications. Thread size: 1/2"-20 UNF, tolerance H4 / 2B-3B, with 3 flutes
This OSG spiral-flute STI tap is designed for cutting internal threads in multiple materials prior to installing screw thread inserts. The 4-flute design with spiral flutes facilitates efficient chip evacuation. Thread size is 7/8"-14 UNF with H4 / 2B-3B tolerance. Manufacturer part number 31503908
OSG
This OSG spiral-flute STI tap is designed for cutting internal threads in multiple materials prior to installing screw thread inserts. The 4-flute design with spiral flutes facilitates efficient chip evacuation. Thread size is 7/8"-14 UNF with H4 / 2B-3B tolerance. Manufacturer part number 31503908

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Spiral-flute STI tap for cutting internal threads to accept helical wire thread inserts. Designed for multiple materials including aluminum, steel, and cast iron. Features 3/8"-24 UNF thread, H2 / 2B-3B tolerance, and 3 flutes. Used in applications requiring thread repair or reinforcement
This spiral-flute STI tap cuts internal threads in multiple materials to accept helical wire thread inserts. It features a M6x1 metric thread size, D3 / 4H-6H tolerance class, and 3 flutes. Used in general manufacturing for repairing or reinforcing tapped holes
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This spiral-flute STI tap cuts internal threads in multiple materials to accept helical wire thread inserts. It features a M6x1 metric thread size, D3 / 4H-6H tolerance class, and 3 flutes. Used in general manufacturing for repairing or reinforcing tapped holes
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Spiral-flute STI tap for cutting internal threads in multiple materials to accept helical wire thread inserts. Features #10-32 UNF thread size, H2 / 2B-3B tolerance, and 3-flute design. Suitable for applications requiring thread repair or reinforcement in aluminum, steel, and cast iron
This spiral-flute STI tap cuts internal threads in multiple materials to accept helical wire thread inserts. It features a 7/16"-20 UNF thread, H4 / 2B-3B tolerance, and 3 flutes. Suitable for use in aerospace, automotive, and general manufacturing applications
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This spiral-flute STI tap cuts internal threads in multiple materials to accept helical wire thread inserts. It features a 7/16"-20 UNF thread, H4 / 2B-3B tolerance, and 3 flutes. Suitable for use in aerospace, automotive, and general manufacturing applications
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