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OSG Straight Flute Tap: 5/16"-18 UNC, 2B+, 4 Flute, Plug Chamfer - Oversized Hand Taps
OSGOversized Hand Taps

OSG Straight Flute Tap: 5/16"-18 UNC, 2B+, 4 Flute, Plug Chamfer

SKU 3G-OTH-272781

Brand
OSG
Item
Straight Flute Tap: 5/16"-18 UNC, 2B+, 4 Flute, Plug Chamfer
Category
Oversized Hand Taps
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Technical Specifications

OSG
Manufacturer Part Number
1590701
Type
2B+, Plug Chamfer, Black Oxide High Speed Steel
Flute
4
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is OSG Straight Flute Tap 5/16"-18 UNC used for?

This OSG tap is used for threading holes in metal components, typically in machining and maintenance applications. Its 5/16"-18 UNC size suits standard coarse threads, while the 2B+ oversized tolerance allows for controlled thread fit after coating or plating.

What are the specifications of OSG Straight Flute Tap 5/16"-18 UNC?

This OSG tap has a 5/16"-18 UNC thread size, 2B+ tolerance, 4 flutes, plug chamfer, and black oxide high-speed steel construction. The manufacturer part number is 1590701. It is designed for through-hole or blind-hole threading in ferrous materials.

Where to buy OSG Straight Flute Tap 5/16"-18 UNC worldwide?

3G Electric supplies this OSG tap worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source genuine OSG cutting tools and deliver to your facility. Contact us for pricing and lead time on this part number 1590701.

How to select the correct OSG tap for threading?

Select tap size matching the thread specification (e.g., 5/16"-18 UNC). Choose plug chamfer for blind holes or taper for through holes. Oversized taps like 2B+ allow for post-coating thread fit. Use proper cutting fluid and speed per material hardness for best results.

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

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