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CHICAGO-LATROBE Spiral Point Tap: 1/4"-28 UNF, H3 / 2B, 3 Flute, Plug Chamfer - General Purpose Spiral-Point Taps
CHICAGO-LATROBEGeneral Purpose Spiral-Point Taps

CHICAGO-LATROBE Spiral Point Tap: 1/4"-28 UNF, H3 / 2B, 3 Flute, Plug Chamfer

CHICAGO-LATROBE General Purpose Spiral-Point Taps.

SKU 3G-OTH-215274

Brand
CHICAGO-LATROBE
Item
Spiral Point Tap: 1/4"-28 UNF, H3 / 2B, 3 Flute, Plug Chamfer
Category
General Purpose Spiral-Point Taps
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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
280405

Technical Documents

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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 the CHICAGO-LATROBE Spiral Point Tap 280405 used for?

This CHICAGO-LATROBE spiral point tap is designed for threading blind holes in ferrous and non-ferrous materials. Its 1/4"-28 UNF size and plug chamfer make it suitable for general-purpose tapping in manufacturing and maintenance applications where chip evacuation is critical.

What are the specifications of the CHICAGO-LATROBE 280405 tap?

The CHICAGO-LATROBE 280405 is a spiral point tap with a 1/4"-28 UNF thread, H3 / 2B tolerance, 3-flute design, and plug chamfer. It is a general-purpose tap for through-hole or blind-hole threading in steel, aluminum, and other machinable alloys.

Where to buy CHICAGO-LATROBE taps in worldwide?

3G Electric supplies CHICAGO-LATROBE taps worldwide, handling full logistics, customs clearance, and delivery to your facility. As a global industrial distributor since 1990, we source and deliver this 280405 spiral point tap to procurement teams and maintenance shops internationally.

How to select the correct CHICAGO-LATROBE tap for a job?

Select a tap based on thread size (e.g., 1/4"-28 UNF), material type, and hole configuration. For blind holes, a spiral point tap like the CHICAGO-LATROBE 280405 pushes chips forward. Match the chamfer (plug, bottoming, or taper) to hole depth and tolerance (H3/2B) for fit requirements.

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 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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Compatible alternatives & equivalents

Cross-referenced by specification & description
CHICAGO-LATROBE Spiral Point Tap: 3/8"-24 UNF, H3 / 2B, 3 Flute, Plug Chamfer (MPN 280652)
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CHICAGO-LATROBE Spiral Point Tap: 3/8"-24 UNF, H3 / 2B, 3 Flute, Plug Chamfer (MPN 280652)
General purpose spiral-point tap for threading through-holes in ferrous and non-ferrous materials. Features a 5/16"-24 UNF thread size with H3 / 2B tolerance, 3 flutes, and a plug chamfer. The spiral-point design pushes chips forward, enabling efficient chip evacuation during production tapping
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General purpose spiral-point tap for threading through-holes in ferrous and non-ferrous materials. Features a 5/16"-24 UNF thread size with H3 / 2B tolerance, 3 flutes, and a plug chamfer. The spiral-point design pushes chips forward, enabling efficient chip evacuation during production tapping
CHICAGO-LATROBE Spiral Point Tap: 1/4"-20 UNC, H3 / 2B, 3 Flute, Plug Chamfer (MPN 280306)
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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 tap for through-hole threading in ferrous and non-ferrous materials. Features 1/4"-20 UNC thread, H5 tolerance for 2B-3B class fit, 3 flutes, and plug chamfer. Designed for applications requiring efficient chip evacuation
CHICAGO-LATROBE
General purpose spiral point tap for through-hole threading in ferrous and non-ferrous materials. Features 1/4"-20 UNC thread, H5 tolerance for 2B-3B class fit, 3 flutes, and plug chamfer. Designed for applications requiring efficient chip evacuation
General purpose spiral-point tap for through-hole threading in ferrous and non-ferrous materials. Size 5/16"-18 UNC with H3/2B tolerance, 3 flutes, and plug chamfer. Suitable for manufacturing and maintenance applications
CHICAGO-LATROBE
General purpose spiral-point tap for through-hole threading in ferrous and non-ferrous materials. Size 5/16"-18 UNC with H3/2B tolerance, 3 flutes, and plug chamfer. Suitable for manufacturing and maintenance applications
CHICAGO-LATROBE Spiral Point Tap: 1/2"-20 UNF, H3 / 2B, 3 Flute, Plug Chamfer (MPN 280901)
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CHICAGO-LATROBE Spiral Point Tap: 1/2"-20 UNF, H3 / 2B, 3 Flute, Plug Chamfer (MPN 280901)

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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
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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
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