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CHICAGO-LATROBE Spiral Point Tap: 1/2"-20 UNF, H11 / 1B, 3 Flute, Plug Chamfer - Oversized Spiral-Point Taps
CHICAGO-LATROBEOversized Spiral-Point Taps

CHICAGO-LATROBE Spiral Point Tap: 1/2"-20 UNF, H11 / 1B, 3 Flute, Plug Chamfer

The CHICAGO-LATROBE Spiral Point Tap (SKU 3G-OTH-251203) is an oversized spiral-point tap with a 1/2"-20 UNF thread, featuring an H11 / 1B tolerance, plug chamfer, and 3 flutes, made from high-speed steel (MPN…

SKU 3G-OTH-251203

Brand
CHICAGO-LATROBE
Item
Spiral Point Tap: 1/2"-20 UNF, H11 / 1B, 3 Flute, Plug Chamfer
Category
Oversized Spiral-Point Taps
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
313509
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 3G-OTH-251203) is an oversized spiral-point tap with a 1/2"-20 UNF thread, featuring an H11 / 1B tolerance, plug chamfer, and 3 flutes, made from high-speed steel (MPN 313509). 3G Electric interprets this demand and sources it across 14 industrial departments, with specialist depth in combustion, pumps, and controls as an authorized distributor for brands like Schneider, ABB, Siemens, SKF, Festo, Fluke, Interpump, and FBR.

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 design pushes chips ahead, preventing clogging. This 1/2"-20 UNF tap with H11/1B tolerance is ideal for precision threading in production machining, automotive, and general manufacturing applications.

What are the specifications of the CHICAGO-LATROBE 313509 tap?

The CHICAGO-LATROBE 313509 is a 1/2"-20 UNF spiral point tap with H11/1B oversize tolerance. It has 3 flutes, a plug chamfer, and is made of high speed steel. This design provides chip evacuation and thread accuracy in through-hole applications.

Where to buy CHICAGO-LATROBE taps in worldwide?

3G Electric supplies CHICAGO-LATROBE taps worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on the 313509 spiral point tap or other CHICAGO-LATROBE tooling.

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

Select a CHICAGO-LATROBE tap based on thread size, pitch, material, and hole type. For through holes, a spiral point tap like the 313509 pushes chips forward. For blind holes, use a spiral flute tap. Match the tap tolerance (e.g., H11/1B) to your required thread class.

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: 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)
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: 7/16"-14 UNC, H11 / 1B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 313506)
CHICAGO-LATROBE
CHICAGO-LATROBE Spiral Point Tap: 7/16"-14 UNC, H11 / 1B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 313506)
CHICAGO-LATROBE Spiral Point Tap: 1/4"-20 UNC, H11 / 1B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 313500)
CHICAGO-LATROBE
CHICAGO-LATROBE Spiral Point Tap: 1/4"-20 UNC, H11 / 1B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 313500)
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)

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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
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
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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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