CHICAGO-LATROBELow-Shear Spiral-Point Taps

CHICAGO-LATROBE Spiral Point Tap: 1/2"-13 UNC, H3 / 2B, 3 Flute, Plug Chamfer

SKU 3G-OTH-217704

Brand

CHICAGO-LATROBE

Item

Spiral Point Tap: 1/2"-13 UNC, H3 / 2B, 3 Flute, Plug Chamfer

Technical Specifications

CHICAGO-LATROBE

Manufacturer Part Number

330191

Type

H3 / 2B, Plug Chamfer, High Speed Steel 

Flute

3

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Technical Documents

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CHICAGO-LATROBE Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

The CHICAGO-LATROBE Spiral Point Tap (SKU 15J942) is a low-shear spiral-point tap in 1/2"-13 UNC, featuring an H3 / 2B tolerance, plug chamfer, 3 flutes, and high-speed steel construction (MPN 330191). 3G Electric interprets demand and delivers this genuine industrial cutting tool across 14 departments — and far more — with specialist depth in combustion, pumps, and controls as an authorised distributor.

Frequently Asked Questions

What is the CHICAGO-LATROBE Spiral Point Tap used for?

The CHICAGO-LATROBE Spiral Point Tap is used for threading blind or through holes in metal, particularly steel and alloys. Its spiral-point design pushes chips forward, reducing clogging and enabling faster production tapping in CNC and manual operations.

What are the specifications of the CHICAGO-LATROBE Spiral Point Tap?

This tap has a 1/2"-13 UNC thread, H3 / 2B tolerance, 3 flutes, and a plug chamfer. It is made of high-speed steel (HSS) and is designed for low-shear, chip-ejection tapping. The manufacturer part number is 330191.

Where to buy CHICAGO-LATROBE taps in worldwide?

You can source CHICAGO-LATROBE taps worldwide through 3G Electric, a global industrial distributor. We handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead times on this and other threading tools.

How to select the right CHICAGO-LATROBE tap for my application?

Select a tap based on thread size, material, and hole type. For through holes, spiral-point taps like this 1/2"-13 UNC model push chips ahead. For blind holes, consider spiral-flute taps. Match the chamfer (plug, bottoming, or taper) to your hole depth and thread length.

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.

CHICAGO-LATROBE Products

3G Electric supplies CHICAGO-LATROBE low-shear 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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