Screw Head Sticking Out on Thin Sheet? Countersunk Hole Solutions
Expert analysis of Protruding screw heads on thin sheet causes with Lihao Technology exclusive solutions
🔍 Cause Analysis of Protruding screw heads on thin sheet
1. Countersink Not Deep Enough
On 0.8-1.5mm sheets standard countersinks cannot seat the screw head
2. Small-Diameter Tool Breakage
Thin-sheet holes are small; standard brittle materials break
3. Sheet Deformation
Standard tools cut with high force, warping thin sheets and uneven holes
✅ Lihao Technology Solutions
Thin-Sheet Countersinks
Full small-diameter range (3-8mm), sharp edges, depth controlled to 0.1-0.3mm
High-Toughness Cobalt HSS
Tough cobalt HSS keeps small tools from breaking and extends life
Sharp Edges, Low Cutting Force
Mirror-polished edges cut with low force - no sheet deformation, flat countersunk holes
Recommended Products
📊 Recommended Cutting Parameters
| 0.8mm sheet | ST2.2 screw, 0.5mm countersink depth |
| 1.1mm sheet | ST2.9 screw, 0.7mm depth |
| 1.3mm sheet | ST3.5 screw, 0.8mm depth |
| Recommended material | High-toughness cobalt HSS |
🏆 Customer Cases
Standard tools - screw heads protruding 0.2mm, burred holes, 12% cosmetic defect rate
Lihao thin-sheet countersinks - heads seated 0.1mm, burr-free holes
Facing Protruding screw heads on thin sheet problems?
Lihao Technology engineers provide one-on-one technical guidance, 48-hour response, 7-day custom manufacturing delivery
WeChat Consultation
WeChat ID: 15338372359
Phone: 15338372359(same as WeChat)