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OSG Screw Thread Insert STI Tap: Straight Fute, 1/4"-20 UNC, H3 / 2B-3B, 3 Flute - General Purpose STI Taps
OSGGeneral Purpose STI Taps

OSG Screw Thread Insert STI Tap: Straight Fute, 1/4"-20 UNC, H3 / 2B-3B, 3 Flute

The OSG Screw Thread Insert STI Tap (MPN 1812100) is a general-purpose STI tap with a straight flute design, sized 1/4"-20 UNC. It features an H3 / 2B-3B tolerance, a bottoming chamfer, and 3 flutes, making it…

SKU 3G-OTH-262083

Brand
OSG
Item
Screw Thread Insert STI Tap: Straight Fute, 1/4"-20 UNC, H3 / 2B-3B, 3 Flute
Category
General Purpose STI Taps
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Technical Specifications

OSG
Manufacturer Part Number
1812100
Type
H3 / 2B-3B, Bottoming Chamfer
Flute
3
UNC
1/4"-20
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Screw Thread Insert STI Tap (MPN 1812100) is a general-purpose STI tap with a straight flute design, sized 1/4"-20 UNC. It features an H3 / 2B-3B tolerance, a bottoming chamfer, and 3 flutes, making it suitable for threading applications requiring screw thread inserts.

Frequently Asked Questions

What is the OSG Screw Thread Insert STI Tap used for?

The OSG Screw Thread Insert STI Tap is used to cut internal threads in metal or plastic for installing screw thread inserts (STI). It is commonly applied in aerospace, automotive, and general manufacturing where thread repair or reinforcement is needed.

What are the specifications of the OSG STI Tap 1812100?

The OSG STI Tap 1812100 has a 1/4"-20 UNC thread size, H3 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. It is a straight flute, general-purpose tap designed for thread insert installation. The manufacturer part number is 1812100.

Where to buy OSG STI Tap 1812100 worldwide?

You can source the OSG STI Tap 1812100 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

How to select the correct OSG STI tap for thread inserts?

Select an OSG STI tap based on the thread size and pitch of the insert (e.g., 1/4"-20 UNC). Ensure the tap tolerance (H3 / 2B-3B) matches the required thread class. Use a bottoming chamfer for blind holes and a plug chamfer for through holes.

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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