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CHICAGO-LATROBE 5/16"-24 UNF Spiral-Point Extension Tap - Spiral-Point Extension Taps
CHICAGO-LATROBESpiral-Point Extension Taps

CHICAGO-LATROBE 5/16"-24 UNF Spiral-Point Extension Tap

The CHICAGO-LATROBE Spiral Point Tap (MPN 918939) is a 5/16"-24 UNF spiral-point extension tap made from high-speed steel with a plug chamfer, H3 / 2B tolerance, and 2 flutes. 3G Electric interprets this demand and…

SKU 3G-OTH-313641

Brand
CHICAGO-LATROBE
Item
5/16"-24 UNF Spiral-Point Extension Tap
Category
Spiral-Point Extension 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
918939
Type
H3 / 2B, Plug Chamfer, High Speed Steel
Flute
2

Technical Documents

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

Product Description

The CHICAGO-LATROBE Spiral Point Tap (MPN 918939) is a 5/16"-24 UNF spiral-point extension tap made from high-speed steel with a plug chamfer, H3 / 2B tolerance, and 2 flutes. 3G Electric interprets this demand and sources it across 14 industrial departments, with specialist depth in cutting tools as an authorised distributor.

Frequently Asked Questions

What is the CHICAGO-LATROBE Spiral Point Tap 918939 used for?

This spiral point tap is designed for threading blind or through holes in metal. Its 5/16"-24 UNF size and plug chamfer make it suitable for production tapping in steel, aluminum, and alloys. The high-speed steel construction provides durability for general industrial machining applications.

What are the specifications of the CHICAGO-LATROBE Spiral Point Tap 918939?

The tap has a 5/16"-24 UNF thread size with H3 / 2B tolerance, 2 flutes, and a plug chamfer. It is made of high-speed steel and is a spiral-point extension tap. The manufacturer part number is 918939, and the SKU is 3G-OTH-313641.

Where to buy the CHICAGO-LATROBE Spiral Point Tap 918939 worldwide?

3G Electric supplies the CHICAGO-LATROBE Spiral Point Tap 918939 worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us to source this tap for your machining needs.

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

Select based on thread size, material, and hole type. For blind holes, use a spiral point tap like this 5/16"-24 UNF model. Match the tap tolerance (H3) to your required thread class (2B). High-speed steel works for general metals; consult a tap selection guide for specific alloys.

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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Spiral-point extension tap for threading blind or through holes in metal. Directs chips forward to prevent clogging. Made of high-speed steel with H3 / 2B tolerance, plug chamfer, and 2 flutes. Suitable for general machining applications requiring clean, accurate threads
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This spiral-point extension tap is designed for through-hole threading in production environments. The spiral point pushes chips ahead, preventing clogging and enabling faster threading in materials such as steel and aluminum. Made of high-speed steel with a plug chamfer and H3/2B tolerance, it has 2 flutes and a 1/4"-28 UNF thread size
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