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YANKEE Counterbore with Built-In Pilot: For 5/16" Screw, 5/16 in Bore Dia - Built-in-Pilot Counterbores
YANKEEBuilt-in-Pilot Counterbores

YANKEE Counterbore with Built-In Pilot: For 5/16" Screw, 5/16 in Bore Dia

The YANKEE Counterbore with Built-In Pilot is a standard built-in-pilot counterbore designed for 5/16" screws. It features a 5/16" bore diameter and a 0.313" pilot diameter, with manufacturer part number 301-5/16.

SKU 3G-OTH-202231

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

YANKEE
Manufacturer Part Number
301-5/16
Bore Dia
5/16 in
Pilot Dia
0.313 in
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YANKEE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The YANKEE Counterbore with Built-In Pilot is a standard built-in-pilot counterbore designed for 5/16" screws. It features a 5/16" bore diameter and a 0.313" pilot diameter, with manufacturer part number 301-5/16.

Frequently Asked Questions

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

The YANKEE Counterbore with Built-In Pilot is used to create a flat-bottomed recess for a 5/16" screw head, allowing the screw to sit flush with or below the workpiece surface. It is commonly applied in woodworking, metalworking, and general fabrication where a clean, countersunk finish is required.

What are the specifications of the YANKEE Counterbore 301-5/16?

The YANKEE Counterbore 301-5/16 is a standard built-in-pilot counterbore designed for 5/16" screws. It has a 5/16" bore diameter and a 0.313" pilot diameter. The manufacturer part number is 301-5/16, and it is made by YANKEE.

Where to buy the YANKEE Counterbore 301-5/16 worldwide?

You can source the YANKEE Counterbore 301-5/16 worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

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

To select the correct YANKEE counterbore, match the bore diameter to the screw head size—here 5/16"—and ensure the pilot diameter (0.313") fits the screw's pilot hole. The built-in pilot design aligns the tool automatically. Always verify the screw type and material before choosing.

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 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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