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OSG Screw Thread Insert STI Tap: Spiral Fute, 9/16"-18 UNF, H3 / 2B-3B, 4 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, 9/16"-18 UNF, H3 / 2B-3B, 4 Flute

The OSG Screw Thread Insert STI Tap (MPN 0148008) is a spiral-flute tap for steel and stainless steel, sized 9/16"-18 UNF with a bottoming chamfer and 4 flutes. It is ground to H3 / 2B-3B tolerance class for thread…

SKU 3G-OTH-244213

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 9/16"-18 UNF, H3 / 2B-3B, 4 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
0148008
Type
H3 / 2B-3B, Bottoming Chamfer
Flute
4
UNF
9/16"-18

Technical Documents

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

Product Description

The OSG Screw Thread Insert STI Tap (MPN 0148008) is a spiral-flute tap for steel and stainless steel, sized 9/16"-18 UNF with a bottoming chamfer and 4 flutes. It is ground to H3 / 2B-3B tolerance class for thread insert installation.

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 0148008 STI tap used for?

The OSG 0148008 is a spiral-flute STI tap designed for cutting internal threads in steel and stainless steel before installing screw thread inserts. Its bottoming chamfer and 4-flute geometry allow threading to the bottom of blind holes, making it ideal for aerospace, automotive, and general manufacturing applications.

What are the specifications of the OSG 0148008 STI tap?

This OSG STI tap has a thread size of 9/16"-18 UNF, a ground thread tolerance of H3 / 2B-3B, 4 flutes, and a bottoming chamfer. It is a spiral-flute type for steel and stainless steel. The manufacturer part number is 0148008. These specs ensure precise thread fit for STI inserts.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps like the 0148008 to customers worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We source and deliver genuine OSG tooling for your manufacturing needs.

How to select the correct STI tap for a thread repair?

Select an STI tap that matches the insert's thread size and pitch, such as 9/16"-18 UNF for this OSG tap. Use a bottoming chamfer for blind holes and spiral flutes for chip evacuation in steel. Ensure the tap tolerance (H3 / 2B-3B) aligns with the required thread class. Always follow the insert manufacturer's recommendations.

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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