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OSG Screw Thread Insert STI Tap: Straight Fute, 5/16"-24 UNF, H3 / 2B-3B, 4 Flute - General Purpose STI Taps
OSGGeneral Purpose STI Taps

OSG Screw Thread Insert STI Tap: Straight Fute, 5/16"-24 UNF, H3 / 2B-3B, 4 Flute

The OSG Screw Thread Insert STI Tap (Straight Flute) is a general-purpose STI tap for 5/16"-24 UNF threads, with an H3 / 2B-3B tolerance and a Plug Chamfer. It features 4 flutes and is identified by manufacturer part…

SKU 3G-OTH-262076

Brand
OSG
Item
Screw Thread Insert STI Tap: Straight Fute, 5/16"-24 UNF, H3 / 2B-3B, 4 Flute
Category
General Purpose STI Taps
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Technical Specifications

OSG
Manufacturer Part Number
6016500
Type
H3 / 2B-3B, Plug Chamfer
Flute
4
UNF
5/16"-24
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Screw Thread Insert STI Tap (Straight Flute) is a general-purpose STI tap for 5/16"-24 UNF threads, with an H3 / 2B-3B tolerance and a Plug Chamfer. It features 4 flutes and is identified by manufacturer part number 6016500.

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 6016500?

The OSG STI Tap 6016500 is a straight flute, plug chamfer tap with 4 flutes. It cuts a 5/16"-24 UNF thread and is ground to H3 tolerance for producing a 2B-3B class fit. This general-purpose tap is designed for use with screw thread inserts.

Where to buy OSG STI Tap 6016500 worldwide?

You can source the OSG STI Tap 6016500 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 on this item.

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

Select an STI tap that matches the thread size and pitch of the insert, such as 5/16"-24 UNF. Ensure the tap tolerance (e.g., H3) aligns with the required thread class (2B-3B). Use a plug chamfer for through holes and a bottoming chamfer for blind 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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