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CHICAGO-LATROBE Spiral Point Tap: 1/4"-20 UNC, H11 / 1B, 3 Flute, Plug Chamfer - Oversized Spiral-Point Taps
CHICAGO-LATROBEOversized Spiral-Point Taps

CHICAGO-LATROBE Spiral Point Tap: 1/4"-20 UNC, H11 / 1B, 3 Flute, Plug Chamfer

The CHICAGO-LATROBE Spiral Point Tap (SKU 313500, MPN 313500) is an oversized spiral-point tap with a 1/4"-20 UNC thread size. It features an H11 / 1B tolerance, plug chamfer, 3 flutes, and is made of high-speed…

SKU 3G-OTH-251215

Brand
CHICAGO-LATROBE
Item
Spiral Point Tap: 1/4"-20 UNC, H11 / 1B, 3 Flute, Plug Chamfer
Category
Oversized Spiral-Point Taps
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
313500
Type
H11 / 1B, Plug Chamfer, High Speed Steel
Flute
3

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

Product Description

The CHICAGO-LATROBE Spiral Point Tap (SKU 313500, MPN 313500) is an oversized spiral-point tap with a 1/4"-20 UNC thread size. It features an H11 / 1B tolerance, plug chamfer, 3 flutes, and is made of high-speed steel. 3G Electric interprets your demand for this OEM-specified tool and delivers it across 14 industrial departments, with specialist depth in cutting tools and machining.

Frequently Asked Questions

What is a CHICAGO-LATROBE spiral point tap used for?

A CHICAGO-LATROBE spiral point tap is used for through-hole threading in metalworking. Its spiral point pushes chips ahead, preventing clogging. This H11 / 1B oversized tap creates precise internal threads in materials like steel and aluminum, common in automotive and general manufacturing.

What are the specifications of the CHICAGO-LATROBE 313500 tap?

The CHICAGO-LATROBE 313500 is a 1/4"-20 UNC spiral point tap with H11 / 1B oversize tolerance. It has 3 flutes, a plug chamfer, and is made of high-speed steel. This design suits through-hole threading where chip evacuation is critical.

Where to buy CHICAGO-LATROBE taps in worldwide?

3G Electric supplies CHICAGO-LATROBE taps worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this 1/4"-20 UNC spiral point tap to your facility. Contact us for pricing and lead time on this H11 / 1B oversize tap.

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

Select a CHICAGO-LATROBE tap based on thread size, material, and hole type. For through holes, a spiral point tap like the 1/4"-20 UNC 313500 pushes chips forward. Use H11 / 1B oversize taps for tighter tolerance threads. Match flute count and chamfer to your application.

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 oversized 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: 5/16"-18 UNC, H11 / 1B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 313502)
CHICAGO-LATROBE
CHICAGO-LATROBE Spiral Point Tap: 5/16"-18 UNC, H11 / 1B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 313502)
CHICAGO-LATROBE Spiral Point Tap: 3/8"-16 UNC, H11 / 1B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 313504)
CHICAGO-LATROBE
CHICAGO-LATROBE Spiral Point Tap: 3/8"-16 UNC, H11 / 1B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 313504)
Oversized spiral-point tap with 5/16"-24 UNF thread, H11 / 1B tolerance, plug chamfer, and 3-flute design. Made from high-speed steel for threading through-holes in metal, pushing chips ahead to reduce clogging. Suitable for general machining applications requiring precise UNF threads
CHICAGO-LATROBE
Oversized spiral-point tap with 5/16"-24 UNF thread, H11 / 1B tolerance, plug chamfer, and 3-flute design. Made from high-speed steel for threading through-holes in metal, pushing chips ahead to reduce clogging. Suitable for general machining applications requiring precise UNF threads
CHICAGO-LATROBE Spiral Point Tap: 1/2"-20 UNF, H11 / 1B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 313509)
CHICAGO-LATROBE
CHICAGO-LATROBE Spiral Point Tap: 1/2"-20 UNF, H11 / 1B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 313509)
CHICAGO-LATROBE Spiral Point Tap: 3/8"-24 UNF, H11 / 1B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 313505)
CHICAGO-LATROBE
CHICAGO-LATROBE Spiral Point Tap: 3/8"-24 UNF, H11 / 1B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 313505)
CHICAGO-LATROBE Spiral Point Tap: 1/2"-13 UNC, H11 / 1B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 313508)
CHICAGO-LATROBE
CHICAGO-LATROBE Spiral Point Tap: 1/2"-13 UNC, H11 / 1B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 313508)

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This oversized spiral-point tap is designed for threading through-holes in metal, with a spiral point geometry that directs chips forward to reduce clogging. Constructed from high-speed steel, it features a plug chamfer and three flutes for efficient cutting. Suitable for industrial manufacturing and maintenance applications requiring precise UNF threads
This spiral-point tap is designed for through-hole threading in metal. Its spiral-point geometry pushes chips forward to reduce clogging during production tapping. Suitable for use in steel and aluminum in general manufacturing applications
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This spiral-point tap is designed for through-hole threading in metal. Its spiral-point geometry pushes chips forward to reduce clogging during production tapping. Suitable for use in steel and aluminum in general manufacturing applications
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This oversized spiral-point tap is designed for threading through-holes in metal, steel, and alloys. The spiral-point design pushes chips forward, preventing clogging and enabling faster production threading. It features a 1/2"-13 UNC thread size, H11 / 1B tolerance, 3 flutes, and a plug chamfer
Oversized spiral-point tap for threading through-holes in metal. Features H11/1B tolerance, plug chamfer, and 3-flute high-speed steel construction. Pushes chips forward to reduce clogging. Suitable for ferrous and non-ferrous materials requiring 5/8"-18 UNF threads
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