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CHICAGO-LATROBE 5/16"-18 UNC Spiral-Point Extension Tap - Spiral-Point Extension Taps
CHICAGO-LATROBESpiral-Point Extension Taps

CHICAGO-LATROBE 5/16"-18 UNC Spiral-Point Extension Tap

CHICAGO-LATROBE Spiral-Point Extension Taps.

SKU 3G-OTH-313619

Brand
CHICAGO-LATROBE
Item
5/16"-18 UNC 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
313600

Technical Documents

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

Product Description

CHICAGO-LATROBE Spiral-Point Extension Taps.

Frequently Asked Questions

What is a CHICAGO-LATROBE extension tap used for?

A CHICAGO-LATROBE extension tap is used to cut internal threads in hard-to-reach or deep-hole applications. The extended shank allows threading in recessed areas, blind holes, or where standard taps cannot reach, common in machining, automotive, and industrial maintenance.

What are the specifications of the CHICAGO-LATROBE 313600 extension tap?

The CHICAGO-LATROBE 313600 extension tap has a thread size of 5/16"-18 UNC, H11 tolerance, 3 flutes, and a plug chamfer. It is a spiral-point extension tap designed for through-hole threading, with the MPN 313600 and SKU 313600.

Where to buy CHICAGO-LATROBE extension taps worldwide?

3G Electric supplies CHICAGO-LATROBE extension taps worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us to source the 313600 or other CHICAGO-LATROBE tooling for your operations.

How to select the right extension tap for deep-hole threading?

Select an extension tap like the CHICAGO-LATROBE 313600 based on thread size (5/16"-18 UNC), material hardness (H11 tolerance), and chamfer type (plug for through-holes). Ensure shank length reaches the threading depth. For blind holes, consider bottoming chamfer taps instead.

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
Spiral-point extension tap for cutting internal threads in deep or hard-to-reach holes. Thread size 7/16"-14 UNC, H11 tolerance, 3 flutes, plug chamfer. Extended shank provides reach for recessed areas such as engine blocks or hydraulic manifolds. Suitable for through-hole threading in ferrous and non-ferrous materials
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Spiral-point extension tap for cutting internal threads in deep or hard-to-reach holes. Thread size 7/16"-14 UNC, H11 tolerance, 3 flutes, plug chamfer. Extended shank provides reach for recessed areas such as engine blocks or hydraulic manifolds. Suitable for through-hole threading in ferrous and non-ferrous materials
This spiral-point extension tap is designed for threading blind or deep holes where standard taps cannot reach. It features a plug chamfer and three flutes for effective chip evacuation. Constructed from high-speed steel, it is suitable for use in ferrous and non-ferrous materials
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This spiral-point extension tap is designed for threading blind or deep holes where standard taps cannot reach. It features a plug chamfer and three flutes for effective chip evacuation. Constructed from high-speed steel, it is suitable for use in ferrous and non-ferrous materials
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This spiral-point extension tap is designed for threading blind or deep holes where standard taps cannot reach. Constructed from black oxide high-speed steel with 3 flutes and a plug chamfer, it provides wear resistance and reduced friction. Suitable for maintenance, repair, and production applications in metalworking
Spiral-point extension tap for threading blind or deep holes where standard taps cannot reach. Made of high-speed steel with H11 tolerance, plug chamfer, and 3 flutes. Suitable for general-purpose threading in maintenance, repair, and production environments
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Spiral-point extension tap for threading blind or deep holes where standard taps cannot reach. Made of high-speed steel with H11 tolerance, plug chamfer, and 3 flutes. Suitable for general-purpose threading in maintenance, repair, and production environments
Spiral-point extension tap for cutting internal threads in deep or hard-to-reach holes. Thread size 5/8"-11 UNC, H11 tolerance, plug chamfer, high-speed steel construction with 3 flutes. Extended shank enables access where standard taps cannot reach
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Spiral-point extension tap for cutting internal threads in deep or hard-to-reach holes. Thread size 5/8"-11 UNC, H11 tolerance, plug chamfer, high-speed steel construction with 3 flutes. Extended shank enables access where standard taps cannot reach
Spiral-point extension tap for threading blind or through holes in metal where standard taps cannot reach. Features H11 tolerance, plug chamfer, 3 flutes, and high-speed steel construction. Suitable for deep or recessed areas requiring precise UNC threads
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Spiral-point extension tap for threading blind or through holes in metal where standard taps cannot reach. Features H11 tolerance, plug chamfer, 3 flutes, and high-speed steel construction. Suitable for deep or recessed areas requiring precise UNC 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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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
High speed steel spiral-point extension tap with M16x2 metric thread, D11 size, plug chamfer, and 3 flutes. Designed for cutting internal threads in deep or hard-to-reach holes where standard taps cannot reach, such as in engine blocks or hydraulic manifolds
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High speed steel spiral-point extension tap with M16x2 metric thread, D11 size, plug chamfer, and 3 flutes. Designed for cutting internal threads in deep or hard-to-reach holes where standard taps cannot reach, such as in engine blocks or hydraulic manifolds
This spiral-point extension tap is designed for threading deep or hard-to-reach holes in metal where a standard tap cannot reach. Made from high-speed steel with a D11 plug chamfer and 3 flutes, it pushes chips forward for efficient through-hole threading. Commonly used in industrial machining and maintenance applications
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This spiral-point extension tap is designed for threading deep or hard-to-reach holes in metal where a standard tap cannot reach. Made from high-speed steel with a D11 plug chamfer and 3 flutes, it pushes chips forward for efficient through-hole threading. Commonly used in industrial machining and maintenance applications
Spiral-point extension tap for through-hole threading in ferrous and non-ferrous materials. Features H3 / 2B tolerance, plug chamfer, 3 flutes, and high-speed steel construction. Directs chips forward to prevent clogging during operation
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Spiral-point extension tap for through-hole threading in ferrous and non-ferrous materials. Features H3 / 2B tolerance, plug chamfer, 3 flutes, and high-speed steel construction. Directs chips forward to prevent clogging during operation
High-speed steel spiral-point extension tap with M10x1.5 metric thread, D11 size, plug chamfer, and 3 flutes. Designed for cutting internal threads in deep or hard-to-reach holes where standard taps cannot access. Suitable for through-hole threading in common materials such as steel and aluminum
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High-speed steel spiral-point extension tap with M10x1.5 metric thread, D11 size, plug chamfer, and 3 flutes. Designed for cutting internal threads in deep or hard-to-reach holes where standard taps cannot access. Suitable for through-hole threading in common materials such as steel and aluminum
CHICAGO-LATROBE Spiral Point Tap: 3/8"-24 UNF, H3 / 2B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 918941)
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CHICAGO-LATROBE Spiral Point Tap: 3/8"-24 UNF, H3 / 2B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 918941)
This spiral-point extension tap is designed for threading deep or hard-to-reach holes where standard taps cannot reach. Made from black oxide high-speed steel with H11 tolerance, it features 3 flutes and a plug chamfer for efficient chip evacuation and precise thread cutting in steel and other materials
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This spiral-point extension tap is designed for threading deep or hard-to-reach holes where standard taps cannot reach. Made from black oxide high-speed steel with H11 tolerance, it features 3 flutes and a plug chamfer for efficient chip evacuation and precise thread cutting in steel and other materials
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This spiral-point extension tap is designed for cutting internal threads in deep or hard-to-reach holes. Made from high-speed steel with a plug chamfer and 3 flutes, it is suited for through-hole threading applications in machining and industrial maintenance