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YANKEE Counterbore with Built-In Pilot: For 5/16" Screw, 1/32" Oversized - Oversized Built-in-Pilot Counterbores
YANKEEOversized Built-in-Pilot Counterbores

YANKEE Counterbore with Built-In Pilot: For 5/16" Screw, 1/32" Oversized

The YANKEE Counterbore with Built-In Pilot is an oversized built-in-pilot counterbore designed for use with a 5/16" screw. It features a 1/32" oversized design and a 5/16" bore diameter, identified by manufacturer…

SKU 3G-OTH-184266

Brand
YANKEE
Item
Counterbore with Built-In Pilot: For 5/16" Screw, 1/32" Oversized
Category
Oversized Built-in-Pilot Counterbores
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Technical Specifications

YANKEE
Manufacturer Part Number
303-5/16
Bore Dia
5/16 in
Oversized
1/32"
Counterbore Type
Oversized
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YANKEE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The YANKEE Counterbore with Built-In Pilot is an oversized built-in-pilot counterbore designed for use with a 5/16" screw. It features a 1/32" oversized design and a 5/16" bore diameter, identified by manufacturer part number 303-5/16.

Frequently Asked Questions

What is a YANKEE Counterbore with Built-In Pilot used for?

A YANKEE Counterbore with Built-In Pilot creates a flat-bottomed recess for a screw head, allowing it to sit flush with or below the workpiece surface. The built-in pilot aligns the counterbore with an existing hole, and the 1/32" oversized design provides clearance for a 5/16" screw.

What are the specifications of the YANKEE Counterbore 303-5/16?

The YANKEE Counterbore 303-5/16 has a 5/16 in bore diameter and is 1/32" oversized for use with a 5/16" screw. It is an oversized built-in-pilot counterbore type, manufactured by YANKEE under part number 303-5/16.

Where to buy a YANKEE Counterbore with Built-In Pilot worldwide?

3G Electric supplies the YANKEE Counterbore with Built-In Pilot (MPN 303-5/16) worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this oversized counterbore to your facility, regardless of location.

How to select the correct YANKEE Counterbore for a 5/16" screw?

Select a YANKEE Counterbore with a bore diameter matching your screw size—here 5/16 in—and choose the oversized option (1/32") if you need extra clearance for the screw head. Ensure the built-in pilot diameter aligns with your pre-drilled hole for accurate centering.

Used in

Common applications for YANKEE
General machining — YANKEE straight-flute chucking reamers for finishing holes in steel and aluminum parts.
Tool and die making — YANKEE spiral-flute hand reamers for precise sizing of die cavities and bushings.
Maintenance repair — YANKEE counterbores with built-in pilots for creating recesses for screw heads in equipment housings.
Automotive manufacturing — YANKEE chucking reamers with MT1 shanks for reaming engine block bolt holes.
Aerospace component production — YANKEE left-hand spiral-flute reamers for finishing holes in titanium alloys.
Metal fabrication — YANKEE straight-flute reamers for enlarging pilot holes in structural steel assemblies.

YANKEE Products

3G Electric supplies YANKEE oversized built-in-pilot counterbores. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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