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OSG Screw Thread Insert STI Tap: Spiral Fute, 7/16"-20 UNF, H4 / 2B-3B, 3 Flute - Spiral-Flute STI Taps for Steel & Stainless Steel
OSGSpiral-Flute STI Taps for Steel & Stainless Steel

OSG Screw Thread Insert STI Tap: Spiral Fute, 7/16"-20 UNF, H4 / 2B-3B, 3 Flute

The OSG Screw Thread Insert STI Tap (MPN 0147501) is a spiral-flute tap for steel and stainless steel, sized 7/16"-20 UNF with an H4 / 2B-3B tolerance and a bottoming chamfer. It features 3 flutes and is designed for…

SKU 3G-OTH-244346

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 7/16"-20 UNF, H4 / 2B-3B, 3 Flute
Category
Spiral-Flute STI Taps for Steel & Stainless Steel
Available to Order
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Technical specs
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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
0147501
Type
H4 / 2B-3B, Bottoming Chamfer
Flute
3
UNF
7/16"-20

Technical Documents

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

Product Description

The OSG Screw Thread Insert STI Tap (MPN 0147501) is a spiral-flute tap for steel and stainless steel, sized 7/16"-20 UNF with an H4 / 2B-3B tolerance and a bottoming chamfer. It features 3 flutes and is designed for threading holes to accept screw thread inserts.

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 0147501 STI tap used for?

The OSG 0147501 is a spiral-flute STI tap designed for cutting internal threads in steel and stainless steel. It is used to prepare holes for screw thread inserts, ensuring strong, wear-resistant threads in demanding industrial applications.

What are the specifications of the OSG 0147501 STI tap?

The OSG 0147501 is a 7/16"-20 UNF spiral-flute STI tap with a bottoming chamfer and 3 flutes. It has an H4 / 2B-3B tolerance class, making it suitable for precision threading in steel and stainless steel. The manufacturer part number is 0147501.

Where to buy OSG 0147501 STI tap worldwide?

You can source the OSG 0147501 STI tap through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring reliable supply for your operations.

How to select the correct STI tap for steel?

For steel and stainless steel, choose a spiral-flute STI tap like the OSG 0147501 with a bottoming chamfer for blind holes. Ensure the thread size (e.g., 7/16"-20 UNF) and tolerance class (H4 / 2B-3B) match your insert and application requirements.

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 steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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