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YANKEE Counterbore with Built-In Pilot: For 1/4" Screw, 1/4 in Bore Dia - Built-in-Pilot Counterbores
YANKEEBuilt-in-Pilot Counterbores

YANKEE Counterbore with Built-In Pilot: For 1/4" Screw, 1/4 in Bore Dia

The YANKEE Counterbore with Built-In Pilot (MPN 301-1/4) is a standard built-in-pilot counterbore designed for 1/4" screws. It features a 1/4 in bore diameter and a 0.25 in pilot diameter.

SKU 3G-OTH-202228

Brand
YANKEE
Item
Counterbore with Built-In Pilot: For 1/4" Screw, 1/4 in Bore Dia
Category
Built-in-Pilot Counterbores
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Technical Specifications

YANKEE
Manufacturer Part Number
301-1/4
Bore Dia
1/4 in
Pilot Dia
0.25 in
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YANKEE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The YANKEE Counterbore with Built-In Pilot (MPN 301-1/4) is a standard built-in-pilot counterbore designed for 1/4" screws. It features a 1/4 in bore diameter and a 0.25 in pilot diameter.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

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

A YANKEE Counterbore with Built-In Pilot (MPN 301-1/4) creates a flat-bottomed recess for a 1/4" screw head, allowing the fastener to sit flush with or below the workpiece surface. It is commonly used in metalworking, woodworking, and assembly applications where a clean, countersunk finish is required.

What are the specifications of the YANKEE 301-1/4 counterbore?

The YANKEE 301-1/4 counterbore has a 1/4 in bore diameter and a 0.25 in pilot diameter. It is a standard built-in-pilot design for 1/4" screws. The manufacturer part number is 301-1/4. This tool is suitable for general-purpose counterboring in various materials.

Where to buy a YANKEE counterbore in worldwide?

3G Electric supplies the YANKEE Counterbore with Built-In Pilot (MPN 301-1/4) to customers worldwide. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and a quote tailored to your procurement needs.

How to select the correct counterbore for a 1/4" screw?

Select a counterbore with a bore diameter matching the screw head size and a pilot diameter matching the screw's body diameter. For a 1/4" screw, the YANKEE 301-1/4 with a 1/4 in bore and 0.25 in pilot is a standard choice. Always verify the screw head profile and material thickness before ordering.

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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