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OSG Screw Thread Insert STI Tap: Spiral Point, 1/4"-28 UNF, H3 / 2B-3B, 3 Flute - Spiral-Point STI Taps for Aluminum
OSGSpiral-Point STI Taps for Aluminum

OSG Screw Thread Insert STI Tap: Spiral Point, 1/4"-28 UNF, H3 / 2B-3B, 3 Flute

The OSG Screw Thread Insert STI Tap is a spiral-point tap designed for threading aluminum. It features a 1/4"-28 UNF thread size, H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer (MPN 1103600700).

SKU 3G-OTH-250416

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Point, 1/4"-28 UNF, H3 / 2B-3B, 3 Flute
Category
Spiral-Point STI Taps for Aluminum
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Technical Specifications

OSG
Manufacturer Part Number
1103600700
Type
H3 / 2B-3B, Plug Chamfer
Flute
3
UNF
1/4"-28
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Screw Thread Insert STI Tap is a spiral-point tap designed for threading aluminum. It features a 1/4"-28 UNF thread size, H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer (MPN 1103600700).

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 spiral-point STI tap used for?

An OSG spiral-point STI tap is used to cut internal threads in aluminum for screw thread inserts. It is designed for through-hole applications, with a plug chamfer and three flutes that push chips forward, reducing clogging and ensuring clean threads in production environments.

What are the specifications of the OSG 1/4"-28 UNF STI tap?

This OSG STI tap has a 1/4"-28 UNF thread size, H3 / 2B-3B tolerance, and a spiral-point design with three flutes and a plug chamfer. The manufacturer part number is 1103600700. It is intended for threading aluminum to accept screw thread inserts.

Where to buy OSG taps in worldwide?

You can source OSG taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this OSG spiral-point STI tap.

How to select the correct STI tap for aluminum?

Select an STI tap with the correct thread size and tolerance for your insert, such as the OSG H3 / 2B-3B tap for 1/4"-28 UNF. For aluminum, a spiral-point design with three flutes and a plug chamfer helps evacuate chips and prevents galling during threading.

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-point sti taps for aluminum. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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