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OSG 31502501 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 31502501 Spiral-Flute STI Tap, 9/16"-12 UNC, H4 / 2B-3B, 4 Flute

OSG Spiral-Flute STI Taps for Multiple Materials.

SKU 3G-OTH-281147

Brand
OSG
Item
31502501 Spiral-Flute STI Tap, 9/16"-12 UNC, H4 / 2B-3B, 4 Flute
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
31502501

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 an OSG Screw Thread Insert STI Tap used for?

An 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 31502501 STI Tap?

The OSG 31502501 is a spiral-flute STI tap with a thread size of 9/16"-12 UNC, a thread limit of H4 / 2B-3B, and 4 flutes. It is designed for tapping holes that will accept screw thread inserts, providing accurate thread geometry in multiple materials.

Where to buy OSG STI taps in 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 31502501 spiral-flute tap.

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

Select an OSG STI tap by matching the thread size, pitch, and class of fit (e.g., H4 / 2B-3B) to your insert requirements. Spiral-flute taps are ideal for blind holes as they evacuate chips upward. Always verify material compatibility and use appropriate cutting fluid for best results.

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. Features 9/16"-12 UNC thread size, H4 / 2B-3B tolerance, and 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, H4 / 2B-3B tolerance, and 4 flutes. Suitable for applications requiring strong threads in softer base materials
Spiral-flute STI tap for cutting internal threads in multiple materials to accept screw thread inserts. Features a 1"-8 UNC thread size, H4 / 2B-3B tolerance, and 4-flute design. Suitable for general manufacturing, automotive, and aerospace 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"-8 UNC thread size, H4 / 2B-3B tolerance, and 4-flute design. Suitable for general manufacturing, automotive, and aerospace applications requiring thread repair or reinforcement
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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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
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
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. Thread size 5/8"-11 UNC with H4 / 2B-3B tolerance and 4 flutes. Used in general manufacturing where thread inserts are required
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Spiral-flute STI tap for cutting internal threads in multiple materials to accept screw thread inserts. Thread size 5/8"-11 UNC with H4 / 2B-3B tolerance and 4 flutes. Used in general manufacturing where thread inserts are required

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