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OSG Screw Thread Insert STI Tap: Spiral Point, 7/8"-14 UNF, H3 / 2B-3B, 3 Flute - Spiral-Point STI Taps for Steel & Stainless Steel
OSGSpiral-Point STI Taps for Steel & Stainless Steel

OSG Screw Thread Insert STI Tap: Spiral Point, 7/8"-14 UNF, H3 / 2B-3B, 3 Flute

The OSG Screw Thread Insert STI Tap is a spiral-point tap for steel and stainless steel, specified as 7/8"-14 UNF with H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer (MPN 30104208). 3G Electric interprets this…

SKU 3G-OTH-265377

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Point, 7/8"-14 UNF, H3 / 2B-3B, 3 Flute
Category
Spiral-Point STI Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
30104208
Type
H3 / 2B-3B, Plug Chamfer
Flute
3
UNF
7/8"-14
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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 for steel and stainless steel, specified as 7/8"-14 UNF with H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer (MPN 30104208). 3G Electric interprets this demand and sources the genuine OSG tool, providing it across 14 industrial departments with specialist depth in combustion, pumps, and controls.

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 steel and stainless steel for installing screw thread inserts. It is commonly applied in aerospace, automotive, and industrial maintenance where strong, wear-resistant threads are required in softer base materials.

What are the specifications of the OSG STI Tap 30104208?

The OSG STI Tap 30104208 is a spiral-point tap with a 7/8"-14 UNF thread, H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is designed for threading holes that will accept screw thread inserts in steel and stainless steel workpieces.

Where to buy OSG STI Taps worldwide?

You can source OSG STI 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 the OSG 30104208 tap.

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

Select an OSG STI Tap based on the insert's thread size and pitch, such as 7/8"-14 UNF. Ensure the tap tolerance (H3 / 2B-3B) matches the required class of fit. Use a plug chamfer for through holes and a spiral-point design for chip evacuation in steel and stainless steel.

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 steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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