Hole Finishing

Precision
Countersinking

Chamfered holes for flush-head screws in sheet metal and CNC parts. Standard 82° and 90° angles, engineer-quoted.

82° and 90° standard
Engineer-quoted
Precision

Operational Status

Countersink Station Active

82° Flat-Head✦90° Metric✦Deburr Chamfer✦Flush Fastening✦Angle Verified✦
✦Key Capabilities✦

Everything You Need

82° Flat-Head

The most common countersink for flat-head machine screws. Seats flush with the surface.

90° Metric

Standard for DIN 7991 / ISO 10642 socket-head countersunk screws.

Deburr Chamfer

A light 45° chamfer to break the edge of drilled or laser-cut holes. Prevents burr injury and eases fastener entry.

Can't find what you need?

Need 100° aerospace countersinks, spotfacing, or countersinking in hardened alloys? Our engineers can quote.

✦Materials In Stock✦

Precision Materials

Every material below is stocked and ready to run. Grades, thicknesses and finishes come straight from our inventory system.

MaterialStocked thicknessNote
CRCA Mild SteelEngineer0.8 – 9.5 mm (11 sizes)Compatible
Stainless Steel 304Engineer0.8 – 9.5 mm (9 sizes)Compatible
Aluminium 5052Engineer1 – 9.5 mm (10 sizes)Compatible
Aluminium 6061Engineer1 – 9.5 mm (9 sizes)Compatible
✦Transparent Pricing✦

Know What You Pay

This service is quoted by our engineers. Here is what drives the price.

01Number of countersunk holes
02Angle and diameter
03Material hardness
04Bundled with cutting or machining — minimal extra setup
Example Prices
Material1 pc10 pcs100 pcs
CRCA Mild Steel, 2 mmInstant₹1,000₹139₹59
Stainless Steel 304, 2 mmInstant₹1,036₹247₹163
Aluminium 5052, 2 mmInstant₹1,000₹157₹77
Acrylic, 3 mmInstant₹1,000₹150₹70
MDF, 3.2 mmInstant₹1,000₹103₹25

Price per part for a 200 × 100 mm plate with 4 holes, standard 3-day turnaround, excl. GST. One-offs carry the order minimum.

Order Minimum

This operation is bundled with your cutting or machining order. No separate minimum.

Turnaround
TurnaroundLead timePrice
EconomyInstant7 working days18% less
StandardInstant3 working daysStandard price
ExpressInstant2 working days+35%
RushInstant1 working day+75% (more when the shop is busy)
Same DayInstantSame day+140% (more when the shop is busy)
✦Design Guidelines✦

Design for Countersinking

Specify the angle and depth clearly so the screw sits flush.

A

Angle Match

The countersink angle must match the screw head: 82° for ANSI, 90° for DIN/ISO. A mismatch leaves a gap.

D

Depth

The countersink must be deep enough for the head to sit flush but not so deep it weakens the material.

E

Edge Distance

Keep the countersink centre ≥ 2× major diameter from any edge to prevent blowout.

Design for Countersinking
✦The Process✦

How It Works

01Upload

CAD File

STEP / DXF / DWG
02Instant

Quote & DFM

Real-time pricing
03Precision

Manufacturing

CNC / Laser / Bend
04Quality Check

& Delivery

Pan-India shipping
Secure · NDA Protected
01

Engineer Review

Hole positions, angles and depths are confirmed from your drawing.

02

Pilot Holes

Holes are laser-cut or drilled to the correct clearance diameter.

03

Countersink

CNC countersink tool chamfers each hole to the specified angle and depth.

04

Flush Check

A sample screw is seated to verify the head sits flush.

✦Hole Finishing✦

Ready to countersink your parts?

✓Flush Fastening
✓Angle Verified