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OSG Spiral-Flute STI Tap, 9/16"-12 UNC, H4 / 2B-3B, 4 Flute - Spiral-Flute STI Taps for Multiple Materials
OSGSpiral-Flute STI Taps for Multiple Materials

OSG Spiral-Flute STI Tap, 9/16"-12 UNC, H4 / 2B-3B, 4 Flute

OSG Spiral-Flute STI Taps for Multiple Materials.

SKU 3G-OTH-281182

Brand
OSG
Item
Spiral-Flute STI Tap, 9/16"-12 UNC, H4 / 2B-3B, 4 Flute
Category
Spiral-Flute STI Taps for Multiple Materials
Available to Order
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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
31502508

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?

The OSG Screw Thread Insert 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, wear-resistant threads are required in softer base materials.

What are the specifications of the OSG 31502508 STI Tap?

The OSG 31502508 is a spiral-flute STI tap with a 9/16"-12 UNC thread size, H4 / 2B-3B tolerance, and 4 flutes. It is designed for threading holes that will accept screw thread inserts, providing accurate thread fit in multiple materials.

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 the OSG 31502508 spiral-flute tap.

How to select the correct OSG STI Tap for an application?

Select the OSG STI tap based on thread size (e.g., 9/16"-12 UNC), tolerance class (H4 / 2B-3B), and material type. Spiral-flute taps are ideal for blind holes in ductile materials. Always match the tap to the insert manufacturer's recommended drill size and thread depth.

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
Spiral-flute STI tap for cutting internal threads in multiple materials to accept screw thread inserts. Thread size 9/16"-12 UNC, thread limit H4 / 2B-3B, 4 flutes. 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. Thread size 9/16"-12 UNC, thread limit H4 / 2B-3B, 4 flutes. 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 9/16"-12 UNC thread size, H3 / 2B-3B tolerance, and 4 flutes. Suitable for applications requiring strong threads in softer base materials
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This spiral-flute STI tap is designed for cutting internal threads for helical wire thread inserts in multiple materials. The spiral-flute geometry aids chip evacuation in blind-hole applications. Thread size is 1"-8 UNC with H6 / 2B-3B tolerance, and the tap has 4 flutes
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This spiral-flute STI tap is designed for cutting internal threads for helical wire thread inserts in multiple materials. The spiral-flute geometry aids chip evacuation in blind-hole applications. Thread size is 1"-8 UNC with H6 / 2B-3B tolerance, and the tap has 4 flutes
This spiral-flute STI tap is designed for cutting internal threads in multiple materials prior to installing helical wire thread inserts. With a 3/4"-16 UNF thread size and H4 tolerance, it accommodates 2B or 3B class threads. The 4-flute spiral flute design aids chip evacuation in through-hole and blind-hole applications
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This spiral-flute STI tap is designed for cutting internal threads in multiple materials prior to installing helical wire thread inserts. With a 3/4"-16 UNF thread size and H4 tolerance, it accommodates 2B or 3B class threads. The 4-flute spiral flute design aids chip evacuation in through-hole and blind-hole applications
Spiral-flute STI tap for cutting internal threads in multiple materials to accept screw thread inserts. Thread size 1"-12 UNF, tolerance H4 / 2B-3B, 4-flute design. Suitable for general manufacturing applications requiring replaceable threads
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Spiral-flute STI tap for cutting internal threads in multiple materials to accept screw thread inserts. Thread size 1"-12 UNF, tolerance H4 / 2B-3B, 4-flute design. Suitable for general manufacturing applications requiring replaceable threads

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