Custom Drill Bits

Step drills and special-profile drills made to your drawings or samples.

JIAYI custom stepped form and combination drill bits

Custom Drill Bits

Stepped, Form, and Combination Drills

Custom stepped, form, and combination drills built from your drawing — combining required features in one engineered tool to reduce tool changes and simplify the machining sequence where the application supports it.

  • ISO 9001:2015 Certified
  • Manufacturing Since 2009
  • 1,800 m² Facility
  • 8,000 Tools/Day
Product range

Build the Drill Around the Feature

Start with the component print and process objective, then confirm what should be combined into one tool.

01

Stepped drills

Machine multiple coaxial diameters with a tool ground to the approved step sequence and dimensions.

02

Form drills

Create application-specific profiles using cutting geometry developed from the component feature.

03

Combination drills

Combine compatible drilling, chamfering, countersinking, or forming operations after engineering review.

04

Replacement specials

Reproduce or improve an existing special tool using its drawing, a usable sample, and current process data.

Tool selection

From Component Drawing to Tool Proposal

Send the component drawing, required tolerances and finish, workpiece material, machine and holder details, coolant method, current cycle, expected volume, and any performance issue to solve. JIAYI will review manufacturability and confirm the proposed tool geometry before quotation.

DrawingsMaterialMachine & coolantVolume
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Custom Drill Bits from JIAYI
Catalog

Custom Drill Bits series

Open any tool for dimensions and drawings, or request a quote for a modified version.

11 Products

Carbide Drill Bits

Solid carbide drills with internal coolant for steel, stainless steel, cast iron and high-temperature alloys.

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23 Products

Carbide Milling Cutters

Carbide square and ball end mills for your production requirements.

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9 Products

Carbide Taps

Ultra-fine grain tungsten carbide taps for a wide range of thread standards.

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4 Products

Carbon Fiber Milling Cutters

Ultra-fine grain tungsten carbide end mills for carbon fibre (CFRP) machining.

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5 Products

Custom Drill Bits

Step drills and special-profile drills made to your drawings or samples.

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4 Products

Custom Milling Cutters

Special-profile milling cutters made to your drawings or samples.

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12 Products

Danfoss Cavity Tools

Roughing and finishing cavity tools for Danfoss-compatible cartridge valve cavities.

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3 Products

Deep-Hole Drill Bits

Carbide drills for deep holes with stable chip evacuation and straightness.

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12 Products

High-Precision Reamers

Carbide, cermet and welded reamers for high-precision and deep-hole bores.

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1 Products

HSS Milling Cutters

High-speed steel milling cutters for general and interrupted machining.

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21 Products

HSS Taps

HSS and HSS-E spiral flute, straight flute and forming taps.

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4 Products

HydraForce Cavity Tools

Roughing and finishing cavity tools for HydraForce-compatible cartridge valve cavities.

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8 Products

ISO 1179 Port Tools (BSPP)

Port forming cutters for ISO 1179 BSPP (G thread) ports.

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4 Products

ISO 6149 Port Tools (Metric)

Port contour cutters for ISO 6149 metric thread ports.

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8 Products

Orthopedic Thread Milling Cutters

Thread mills for titanium alloy and stainless steel orthopedic locking plates.

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6 Products

Parker Cavity Tools

Roughing and finishing cavity tools for Parker-compatible cartridge valve cavities.

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2 Products

Plastic Cutting Tools

Carbide and HSSE end mills for engineering plastics, acrylics and composites.

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5 Products

SAE J1926 Port Tools (UNF)

Port contour cutters for SAE J1926 straight thread O-ring ports.

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16 Products

Sun Hydraulics Cavity Tools

Roughing and finishing cavity tools for Sun Hydraulics-compatible cartridge valve cavities.

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3 Products

T-Slot Milling Cutters

T-slot and undercut cutters for slots, grooves and keyways.

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23 Products

Thread Milling Cutters

Tungsten carbide thread mills for a wide range of thread standards.

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38 Products

Cavity Tools

Complete range of cavity form tools compatible with Sun Hydraulics, HydraForce, Parker and Bosch Rexroth cartridge valve standards.

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6 Products

Composite Material Machining

PCD tipped and diamond coated tools designed for clean, delamination-free machining of carbon fiber, GFRP and other composite stacks.

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31 Products

Hole Making Tools

Solid carbide drills, indexable drills, reamers and boring bars engineered for tight tolerance hole production in hydraulic manifolds and valve bodies.

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31 Products

Milling Cutters

High performance milling cutters with TiAlN and AlTiN coatings for steel, stainless and superalloy machining.

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17 Products

Port Tools

Single-pass port tools producing complete port form, chamfer and thread relief in one operation. Available in all major hydraulic standards.

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61 Products

Threading Tools

Complete threading program including taps, solid carbide thread mills and indexable inserts for UN, metric, NPT and BSPP threads.

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No products listed in this category yet

We are still adding this range to our online catalog. These tools are available made to order: send your drawing or sample and we will quote sizes, lead time and price, or contact our team for current availability.

Made to Order

Manufactured to your drawing

Tools in this category are produced on request to your drawing, sample or specification. Send us your requirements and our engineers will reply within 24 hours.

DC183X custom drill series card
Threaded hole drill. The DC183X Series three-flute, internally cooled, high-efficiency carbide drill bits are high-performance tools developed by JIAYI Tools specifically for high-feed deep-hole drilling and high-volume machining applications. Standard sizes and custom tools made to your drawings.
DP160C custom drill series card
Short Blade X-type Carbide Drill. The DP160C features an “external cooling groove + integrated stepped cutting edge” design, enabling precision machining of two different hole diameters in a single pass, while the external cooling system delivers coolant directly to the cutting zone. Standard sizes and custom tools made to your drawings.
DT16C custom drill series card
Straight flute step drill. The DT16C series of internally cooled, three-step carbide drill bits are high-performance tools developed by JIAYI Tools specifically for machining complex stepped holes with multiple diameters. Standard sizes and custom tools made to your drawings.
DT17C custom drill series card
Carbide step drill. The DT17C series of internally cooled, two-stage carbide drill bits are high-performance tools developed by JIAYI Tools specifically for machining double-diameter stepped holes. Standard sizes and custom tools made to your drawings.
DT18C custom drill series card
Binary step drill. Thanks to their unique stepped design and optimization for the properties of aluminum, aluminum-cutting drill bits offer significant advantages in terms of efficiency, precision, and cost-effectiveness, making them the ideal tool for machining aluminum and its alloys. Standard sizes and custom tools made to your drawings.
Why JIAYI

Why Choose JIAYI for Custom Drill Bit Applications

  • 01

    Drawing-based engineering. The tool design begins with the finished component feature and the machining sequence, not a generic catalog geometry.

  • 02

    Operation consolidation. Compatible features can be combined to reduce tool changes and setup complexity after the process is reviewed.

  • 03

    Controlled manufacture. Critical geometry is ground and inspected against the approved custom-tool drawing.

Custom tooling

Have a Special Drilling Application?

Send the drawing, an existing tool, or a representative sample together with the machining conditions. Our engineers will review the application and prepare a tool proposal after technical confirmation.

Request custom tool quote
Application review

Have a special hole or multi-feature operation? Send the drawing for an engineering review.