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

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

The CHICAGO-LATROBE Spiral Point Tap (SKU 3G-OTH-217704) 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…

SKU 3G-OTH-217704

Brand
CHICAGO-LATROBE
Item
Spiral Point Tap: 1/2"-13 UNC, H3 / 2B, 3 Flute, Plug Chamfer
Category
Low-Shear Spiral-Point Taps
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
330191
Type
H3 / 2B, Plug Chamfer, High Speed Steel
Flute
3

Technical Documents

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

Product Description

The CHICAGO-LATROBE Spiral Point Tap (SKU 3G-OTH-217704) 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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Compatible alternatives & equivalents

Cross-referenced by specification & description
CHICAGO-LATROBE Spiral Point Tap: 7/16"-14 UNC, H3 / 2B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 330190)
CHICAGO-LATROBE
CHICAGO-LATROBE Spiral Point Tap: 7/16"-14 UNC, H3 / 2B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 330190)
CHICAGO-LATROBE Spiral Point Tap: 1/4"-20 UNC, H3 / 2B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 330184)
CHICAGO-LATROBE
CHICAGO-LATROBE Spiral Point Tap: 1/4"-20 UNC, H3 / 2B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 330184)
CHICAGO-LATROBE Spiral Point Tap: 5/8"-11 UNC, H3 / 2B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 330192)
CHICAGO-LATROBE
CHICAGO-LATROBE Spiral Point Tap: 5/8"-11 UNC, H3 / 2B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 330192)
CHICAGO-LATROBE Spiral Point Tap: 1/4"-20 UNC, H2 / 2B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 330183)
CHICAGO-LATROBE
CHICAGO-LATROBE Spiral Point Tap: 1/4"-20 UNC, H2 / 2B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 330183)
CHICAGO-LATROBE Spiral Point Tap: 5/16"-18 UNC, H3 / 2B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 330187)
CHICAGO-LATROBE
CHICAGO-LATROBE Spiral Point Tap: 5/16"-18 UNC, H3 / 2B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 330187)
CHICAGO-LATROBE Spiral Point Tap: #10-24 UNC, H3 / 2B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 330179)
CHICAGO-LATROBE
CHICAGO-LATROBE Spiral Point Tap: #10-24 UNC, H3 / 2B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 330179)

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This low-shear spiral-point tap is designed for through-hole threading in materials such as steel and aluminum. The spiral point geometry pushes chips forward, reducing clogging and enabling efficient production threading. Made from high-speed steel with a plug chamfer and 3 flutes, it is suitable for general industrial manufacturing and maintenance applications
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This low-shear spiral-point tap is designed for through-hole threading in materials such as steel and aluminum. The spiral point geometry pushes chips forward, reducing clogging and enabling efficient production threading. Made from high-speed steel with a plug chamfer and 3 flutes, it is suitable for general industrial manufacturing and maintenance applications
This low-shear spiral-point tap is designed for threading blind or through holes in metal. The spiral-point geometry pushes chips forward, reducing clogging and breakage. Made from high-speed steel with a plug chamfer and 2-flute design, it is suitable for general threading applications in ferrous materials
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This low-shear spiral-point tap is designed for threading blind or through holes in metal. The spiral-point geometry pushes chips forward, reducing clogging and breakage. Made from high-speed steel with a plug chamfer and 2-flute design, it is suitable for general threading applications in ferrous materials
This high-speed steel spiral-point tap is designed for threading #5-40 UNC through holes in production machining. The spiral-point geometry pushes chips forward, reducing chip congestion. With H2 / 2B tolerance and a plug chamfer, it is suited for general manufacturing applications requiring precise internal threads
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This high-speed steel spiral-point tap is designed for threading #5-40 UNC through holes in production machining. The spiral-point geometry pushes chips forward, reducing chip congestion. With H2 / 2B tolerance and a plug chamfer, it is suited for general manufacturing applications requiring precise internal threads
This low-shear spiral-point tap is designed for through-hole threading in ferrous and non-ferrous materials. Its spiral-point geometry pushes chips forward, reducing clogging and enabling faster production tapping in CNC and manual operations. Made from high-speed steel with a plug chamfer and 2-flute design, it is suitable for general machining applications
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This low-shear spiral-point tap is designed for through-hole threading in ferrous and non-ferrous materials. Its spiral-point geometry pushes chips forward, reducing clogging and enabling faster production tapping in CNC and manual operations. Made from high-speed steel with a plug chamfer and 2-flute design, it is suitable for general machining applications
This #12-24 UNC low-shear spiral-point tap is made of high-speed steel with a plug chamfer and 2 flutes. It features H3 / 2B tolerance for through-hole threading in production and maintenance applications. The spiral-point design pushes chips forward, suitable for threading in steel, aluminum, and similar materials
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This #12-24 UNC low-shear spiral-point tap is made of high-speed steel with a plug chamfer and 2 flutes. It features H3 / 2B tolerance for through-hole threading in production and maintenance applications. The spiral-point design pushes chips forward, suitable for threading in steel, aluminum, and similar materials
This low-shear spiral-point tap is designed for threading #4-40 UNC holes in through-hole applications. The spiral-point geometry pushes chips forward, enabling efficient chip evacuation in production environments. Constructed from high-speed steel with a plug chamfer and 2-flute design, it is suited for use in metals and plastics
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CHICAGO-LATROBE Spiral Point Tap: 1/4"-28 UNF, H3 / 2B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 330186)
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