UFIBER · CNC Application Case Study

Automated Cross-Hole Deburring in 17-4 PH Stainless Steel.

Remove the burr where an M3 thread meets a Ø2.6 mm cross-hole, without touching the thread. On a precision medical connector, a UFIBER™ UF2615 Ø1.5 mm ceramic cross-hole brush replaced 3 minutes of manual deburring with an 18-second automated CNC step, with zero thread damage and scrap.

Medical17-4 PH stainless7,500 parts/month

See the results

17-4 PH precision medical connector with M3 thread and Ø2.6 mm cross-hole — Precision medical connector from the application.

Brush: UF2615
Spindle speed: 7,000 RPM
Table feed: 100 mm/min
Time per part: 180 → 18 s

01 / The application

A burr where thread
meets cross-hole.

The challenge

A medical device manufacturer produces a precision hard connector in 17-4 PH stainless steel (ASTM A564 / Type 630 / X5CrNiCuNb16-4). An M3×0.6-6H thread is tapped across an existing Ø2.6 mm cross-hole, creating internal burrs at the intersection. This led to:

Risk of damaging the thread profile
Part rejection and scrap
Manual deburring taking 3 minutes per part
High labor costs
Inconsistent surface quality

At 7,500 medical components per month, manual deburring was no longer sustainable.

Application details

Industry: Medical
Application: Cross-hole deburring after thread tapping
Part: Precision medical connector
Material: ASTM A564 / 17-4 PH / Type 630 / X5CrNiCuNb16-4
Machine: Star SR-20 JII Type B
Thread: M3×0.6 – 6H
Cross-hole diameter: Ø2.6 mm
Cross-hole feature length: 4.6 mm

02 / Tool & parameters

The tool behind
the result.

UFIBER cross-hole brush

UF2615

UF-CH-W-D015-L50

Brush diameter: Ø1.5 mm
Grit: #1000 White

Designed for

Small-diameter cross-holes
Thread-exit burr removal
CNC automated deburring
Stainless steels, including 17-4 PH

Explore cross-hole brushes

Recorded machining parameters
Workpiece material	17-4 PH stainless steel
Cross-hole diameter	Ø2.6 mm (0.1023")
Cross-hole feature length	4.6 mm
Thread	M3×0.6 – 6H
Machine	Star SR-20 JII Type B
Spindle speed	7,000 RPM
Table feed	100 mm/min (4 in/min)
Coolant	Dry
Reported result	18 s per part, zero thread damage

These values describe this application. Confirm the setup for your own parts with NOGA MT.

UFIBER UF2615 cross-hole brush deburring the medical connector on a Star SR-20 — UF2615 cross-hole brush running on the Star SR-20 JII.

Watch the process

VIDEO

Automated cross-hole deburring in 17-4 PH stainless steel with the UFIBER™ UF2615 brush.

03 / Before & after

From manual deburring
to an automated CNC step.

Zero thread damage and scrap

Cross-hole and M3 thread intersection before UFIBER deburring, with burr — Burr at the cross-hole / thread intersection.

Cross-hole and M3 thread intersection after UFIBER deburring, burr removed — Burr removed, thread intact.

90%Less deburring time per part

≈338 hLabor saved per month (7,500 parts × 162 s)

0Thread damage or scrap

UFIBER cross-hole deburring process overview for the 17-4 PH connector — From manual deburring to an automated CNC process.

Key results

90% reduction in deburring time
Thread damage risk eliminated
Improved repeatability and surface quality
Reduced operator dependency
Higher production stability in medical manufacturing
Fully integrated into the machining cycle

The UFIBER ceramic brush turned a slow, risky manual process into a controlled, repeatable automated operation within the machining cycle.

Automated Cross-Hole Deburring in 17-4 PH Stainless Steel.