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OSG Screw Thread Insert STI Tap: Straight Fute, 9/16"-18 UNF, H4 / 2B-3B, 4 Flute - General Purpose STI Taps
OSGGeneral Purpose STI Taps

OSG Screw Thread Insert STI Tap: Straight Fute, 9/16"-18 UNF, H4 / 2B-3B, 4 Flute

The OSG Screw Thread Insert STI Tap (SKU 12602200, MPN 12602200) is a general-purpose STI tap with a straight flute design, sized 9/16"-18 UNF. It features a bottoming chamfer, 4 flutes, and an H4 / 2B-3B tolerance…

SKU 3G-OTH-262035

Brand
OSG
Item
Screw Thread Insert STI Tap: Straight Fute, 9/16"-18 UNF, H4 / 2B-3B, 4 Flute
Category
General Purpose STI Taps
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
12602200
Type
H4 / 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 (SKU 12602200, MPN 12602200) is a general-purpose STI tap with a straight flute design, sized 9/16"-18 UNF. It features a bottoming chamfer, 4 flutes, and an H4 / 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 an OSG Screw Thread Insert STI Tap used for?

An OSG STI tap cuts internal threads in a workpiece to accept a helical wire thread insert. It is used in metalworking and maintenance applications across industries like automotive, aerospace, and general manufacturing to repair or reinforce stripped threads.

What are the specifications of the OSG 12602200 STI Tap?

The OSG 12602200 is a 9/16"-18 UNF straight flute STI tap with a bottoming chamfer and 4 flutes. It is ground to H4 / 2B-3B tolerance for producing threads that accept standard screw thread inserts. It is designed for general purpose tapping in ferrous and non-ferrous materials.

Where to buy OSG STI taps worldwide?

3G Electric supplies OSG STI taps like the 12602200 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for a quote and lead time on this and other OSG cutting tools.

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

Select an STI tap that matches the original thread size and pitch, such as 9/16"-18 UNF. The tap must be ground to STI specifications (e.g., H4 / 2B-3B) to produce threads that accept the corresponding insert. Always verify the insert manufacturer's recommended tap drill size and chamfer type.

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 general purpose sti taps. 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
General purpose STI tap for cutting internal threads to accommodate screw thread inserts. Features a 5/8"-18 UNF thread, H4 / 2B-3B tolerance, 4 straight flutes, and a bottoming chamfer for threading to the bottom of blind holes. Suitable for thread repair and reinforcement in metal components
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General purpose STI tap for cutting internal threads to accommodate screw thread inserts. Features a 5/8"-18 UNF thread, H4 / 2B-3B tolerance, 4 straight flutes, and a bottoming chamfer for threading to the bottom of blind holes. Suitable for thread repair and reinforcement in metal components
OSG Screw Thread Insert STI Tap: Straight Fute, 7/16"-20 UNF, H4 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 12601000)
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OSG Screw Thread Insert STI Tap: Straight Fute, 7/16"-20 UNF, H4 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 12601000)
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OSG Screw Thread Insert STI Tap: Straight Fute, 9/16"-12 UNC, H4 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 12601800)
OSG Screw Thread Insert STI Tap: Straight Fute, 1/2"-20 UNF, H4 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 12601400)
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OSG Screw Thread Insert STI Tap: Straight Fute, 1/2"-20 UNF, H4 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 12601400)
OSG Screw Thread Insert STI Tap: Straight Fute, 3/8"-16 UNC, H4 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 12600800)
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OSG Screw Thread Insert STI Tap: Straight Fute, 3/8"-16 UNC, H4 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 12600800)
OSG Screw Thread Insert STI Tap: Straight Fute, 7/8"-14 UNF, H4 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 12604600)
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OSG Screw Thread Insert STI Tap: Straight Fute, 7/8"-14 UNF, H4 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 12604600)

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