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OSG Spiral Flute Tap: 1 1/8"-12 UNF, H8 / 2B-3B, 4 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 1 1/8"-12 UNF, H8 / 2B-3B, 4 Flute

The OSG Spiral Flute Tap (1 1/8"-12 UNF, MPN 1650507308) is a spiral-flute tap for steel and stainless steel, featuring an H8 / 2B-3B tolerance, 4 flutes, and a modified bottoming chamfer. 3G Electric interprets your…

SKU 3G-OTH-217931

Brand
OSG
Item
Spiral Flute Tap: 1 1/8"-12 UNF, H8 / 2B-3B, 4 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
1650507308
Type
H8 / 2B-3B, Modified Bottoming Chamfer
Flute
4

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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Flute Tap (1 1/8"-12 UNF, MPN 1650507308) is a spiral-flute tap for steel and stainless steel, featuring an H8 / 2B-3B tolerance, 4 flutes, and a modified bottoming chamfer. 3G Electric interprets your demand for this precision threading tool, sourcing it from our global network and supporting your application with specialist expertise across 14 industrial departments.

Frequently Asked Questions

What is the OSG spiral flute tap used for?

This OSG spiral flute tap is designed for threading steel and stainless steel. Its modified bottoming chamfer and 4-flute design efficiently evacuate chips, making it ideal for through-hole and blind-hole applications in industrial machining, automotive, and aerospace manufacturing.

What are the specifications of the OSG spiral flute tap 1650507308?

The OSG tap has a thread size of 1 1/8"-12 UNF, with a tolerance of H8 / 2B-3B. It features 4 flutes and a modified bottoming chamfer. The manufacturer part number is 1650507308, and it is classified as a spiral-flute tap for steel and stainless steel.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source and deliver genuine OSG cutting tools like the 1650507308 spiral flute tap to any location. Contact us for pricing and lead time.

How to select the right OSG tap for steel threading?

For steel threading, choose a tap with appropriate thread size and tolerance, such as the OSG 1 1/8"-12 UNF with H8 / 2B-3B. Spiral flute taps are best for chip evacuation in blind holes. Ensure the chamfer type matches your application—modified bottoming for shallow 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 spiral-flute 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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Cross-referenced by specification & description
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