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CHICAGO-LATROBE Extension Tap: 1/2"-13 UNC, H11, 3 Flute, Plug Chamfer, High Speed Steel (MPN 313548) - Spiral-Point Extension Taps
CHICAGO-LATROBESpiral-Point Extension Taps

CHICAGO-LATROBE Extension Tap: 1/2"-13 UNC, H11, 3 Flute, Plug Chamfer, High Speed Steel (MPN 313548)

The CHICAGO-LATROBE Extension Tap is a spiral-point extension tap with a 1/2"-13 UNC thread size. It features an H11, plug chamfer design, 3 flutes, and is made of high-speed steel (MPN 313548).

SKU 3G-OTH-313623

Brand
CHICAGO-LATROBE
Item
Extension Tap: 1/2"-13 UNC, H11, 3 Flute, Plug Chamfer, High Speed Steel
Category
Spiral-Point Extension 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
313548
Type
H11, 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 Extension Tap is a spiral-point extension tap with a 1/2"-13 UNC thread size. It features an H11, plug chamfer design, 3 flutes, and is made of high-speed steel (MPN 313548).

Frequently Asked Questions

What is the CHICAGO-LATROBE Extension Tap 313548 used for?

This extension tap is used for threading blind or through holes in metal where standard taps cannot reach. It is ideal for automotive, aerospace, and general manufacturing applications requiring precise UNC threads in deep or recessed areas.

What are the specifications of the CHICAGO-LATROBE Extension Tap 313548?

The CHICAGO-LATROBE Extension Tap has a 1/2"-13 UNC thread size, H11 tolerance, 3 flutes, plug chamfer, and is made of high-speed steel. The manufacturer part number is 313548. It is designed for spiral-point geometry to push chips forward.

Where to buy the CHICAGO-LATROBE Extension Tap 313548 worldwide?

You can source the CHICAGO-LATROBE Extension Tap 313548 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring you receive the correct tap for your threading needs.

How to select the correct CHICAGO-LATROBE Extension Tap for my application?

Select based on thread size (e.g., 1/2"-13 UNC), material (high-speed steel for general metals), flute count (3 flutes for chip evacuation), and chamfer type (plug for most holes). Ensure the tap length reaches your threading depth. CHICAGO-LATROBE taps are precision-ground for consistent performance.

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 spiral-point extension 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 Extension Tap: 1/4"-20 UNC, H11, 3 Flute, Plug Chamfer, High Speed Steel (MPN 313544)
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CHICAGO-LATROBE Extension Tap: 5/8"-11 UNC, H11, 3 Flute, Plug Chamfer, High Speed Steel (MPN 313549)
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CHICAGO-LATROBE Extension Tap: M12x1.75 Metric, D11, 3 Flute, Plug Chamfer, High Speed Steel (MPN 313553)
CHICAGO-LATROBE Extension Tap: 5/8"-11 UNC, H11, 3 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 313604)
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CHICAGO-LATROBE Extension Tap: 5/8"-11 UNC, H11, 3 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 313604)
CHICAGO-LATROBE Extension Tap: M16x2 Metric, D11, 3 Flute, Plug Chamfer, High Speed Steel (MPN 313554)
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CHICAGO-LATROBE Extension Tap: M16x2 Metric, D11, 3 Flute, Plug Chamfer, High Speed Steel (MPN 313554)

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