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CHICAGO-LATROBE Spiral Point Tap: 1/4"-20 UNC, H3 / 2B, 3 Flute, Plug Chamfer (MPN 280306) - General Purpose Spiral-Point Taps
CHICAGO-LATROBEGeneral Purpose Spiral-Point Taps

CHICAGO-LATROBE Spiral Point Tap: 1/4"-20 UNC, H3 / 2B, 3 Flute, Plug Chamfer (MPN 280306)

CHICAGO-LATROBE General Purpose Spiral-Point Taps.

SKU 3G-OTH-215649

Brand
CHICAGO-LATROBE
Item
Spiral Point Tap: 1/4"-20 UNC, H3 / 2B, 3 Flute, Plug Chamfer
Part Number
280306
Category
General Purpose Spiral-Point Taps
Available to Order
Also known as:280306CHICAGO-LATROBE
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
280306

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CHICAGO-LATROBE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

CHICAGO-LATROBE General Purpose Spiral-Point Taps.

Frequently Asked Questions

What is a CHICAGO-LATROBE spiral point tap used for?

A CHICAGO-LATROBE spiral point tap is used for through-hole threading in metalworking. Its spiral point design pushes chips ahead, preventing clogging and enabling faster production. It is ideal for general-purpose tapping in steel, aluminum, and other machinable materials across industrial maintenance and manufacturing.

What are the specifications of the CHICAGO-LATROBE 280306 tap?

The CHICAGO-LATROBE 280306 is a 1/4"-20 UNC spiral point tap with H3 / 2B tolerance, 3 flutes, and a plug chamfer. It is designed for through-hole threading and is made from high-speed steel for durability. This general-purpose tap suits manual or CNC applications.

Where to buy CHICAGO-LATROBE taps in worldwide?

3G Electric supplies CHICAGO-LATROBE taps worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver genuine CHICAGO-LATROBE cutting tools to your facility. Contact us for pricing and lead time on the 280306 spiral point tap.

How to select the right spiral point tap for a job?

Select a spiral point tap like the CHICAGO-LATROBE 280306 for through-hole threading where chip evacuation is critical. Match the tap size (1/4"-20 UNC), thread class (2B), and chamfer (plug) to your hole and material. For blind holes, consider a spiral flute tap instead.

Used in

Common applications for CHICAGO-LATROBE
Aerospace assembly — Chicago-Latrobe NAS 907 Type B aircraft-extension drill bits for drilling fastener holes in aluminum and titanium skins.
Metal fabrication — Chicago-Latrobe reduced-shank drill bit sets for enlarging holes in structural steel using magnetic drill presses.
Maintenance repair — Chicago-Latrobe left-hand cobalt jobber-length drill bits for removing broken bolts in machinery.
Tool and die making — Chicago-Latrobe jobber-length drill bit sets with 135° split point for precision hole drilling in hardened steels.
Automotive repair — Chicago-Latrobe spiral-flute screw extractors for removing seized fasteners in engine blocks or exhaust systems.
General manufacturing — Chicago-Latrobe HSS jobber-length drill bits for production drilling in mild steel and cast iron.
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CHICAGO-LATROBE Products

3G Electric supplies CHICAGO-LATROBE general purpose spiral-point taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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This spiral-point tap is designed for threading blind holes in production machining. The spiral point pushes chips forward, reducing clogging and enabling efficient tapping in ferrous and non-ferrous materials. Made from high speed steel with a plug chamfer and 2 flutes, it provides a H2 / 2B class fit for #4-40 UNC threads
CHICAGO-LATROBE
This spiral-point tap is designed for threading blind holes in production machining. The spiral point pushes chips forward, reducing clogging and enabling efficient tapping in ferrous and non-ferrous materials. Made from high speed steel with a plug chamfer and 2 flutes, it provides a H2 / 2B class fit for #4-40 UNC threads
This spiral-point tap is designed for general-purpose threading of blind or through holes in metals such as steel, aluminum, and cast iron. The spiral-point geometry pushes chips forward, reducing clogging in production environments. Made from high-speed steel with a D4 / 6H tolerance class, 2 flutes, and a plug chamfer. Manufacturer part number 360854
CHICAGO-LATROBE
This spiral-point tap is designed for general-purpose threading of blind or through holes in metals such as steel, aluminum, and cast iron. The spiral-point geometry pushes chips forward, reducing clogging in production environments. Made from high-speed steel with a D4 / 6H tolerance class, 2 flutes, and a plug chamfer. Manufacturer part number 360854

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