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

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

The OSG Screw Thread Insert STI Tap (MPN 12603700) is a general-purpose STI tap with a straight flute design, sized 3/4"-16 UNF. It features a H4 / 2B-3B tolerance, 4 flutes, and a plug chamfer, making it suitable…

SKU 3G-OTH-262124

Brand
OSG
Item
Screw Thread Insert STI Tap: Straight Fute, 3/4"-16 UNF, H4 / 2B-3B, 4 Flute
Category
General Purpose STI Taps
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Technical Specifications

OSG
Manufacturer Part Number
12603700
Type
H4 / 2B-3B, Plug Chamfer
Flute
4
UNF
3/4"-16
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Screw Thread Insert STI Tap (MPN 12603700) is a general-purpose STI tap with a straight flute design, sized 3/4"-16 UNF. It features a H4 / 2B-3B tolerance, 4 flutes, and a plug chamfer, making it suitable for thread insert installation.

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 a workpiece before installing a helical wire thread insert. It is commonly applied in aerospace, automotive, and general manufacturing to repair or reinforce tapped holes in softer materials like aluminum or cast iron.

What are the specifications of the OSG STI Tap 12603700?

The OSG STI Tap 12603700 is a general-purpose tap with a 3/4"-16 UNF thread, H4 / 2B-3B tolerance, 4 flutes, and a plug chamfer. It is designed for straight flute operation and is used to create threads that accept screw thread inserts. The manufacturer part number is 12603700.

Where to buy OSG STI Taps worldwide?

You can source OSG STI Taps, including model 12603700, through 3G Electric. As a global industrial equipment distributor since 1990, 3G Electric handles full logistics, customs clearance, and delivery to worldwide destinations. Contact them for availability and lead time.

How to select the correct OSG STI Tap for a thread insert?

To select the correct OSG STI Tap, match the tap's thread size and pitch to the insert's specifications. For example, the 12603700 is a 3/4"-16 UNF tap with H4 / 2B-3B tolerance. Ensure the tap chamfer type (plug) suits the hole depth. Always verify the insert manufacturer's recommendations for tap class.

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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