ISO 4029 Set Screw (Cup Point)
ISO 4029 Cup Point Set Screws
DIN Equivalent: DIN 916 | Hex Socket Headless Screws
ISO 4029 cup point set screws feature a circular cutting edge that digs into the shaft material for maximum holding power. The cup point is the most commonly used set screw point style, offering excellent vibration resistance and the highest grip strength of all point types.
Quick Specifications
Key Features
Maximum Holding Power
Circular cutting edge creates a ring-shaped indentation that mechanically locks into the shaft. Strongest holding of all point types.
Vibration Resistant
Deep bite into shaft material resists loosening under vibration. First choice for high-vibration environments.
Most Common Style
Industry standard for general-purpose set screw applications. Widely stocked and immediately available.
Knurled Cup Available
Knurled versions add serrations inside cup for even more grip. Best for hardened shafts and critical applications.
Dimension Chart
| Size | Pitch | Cup Dia. (dc) | Hex Key Size |
|---|---|---|---|
| M3 | 0.5 mm | 1.4 mm | 1.5 mm |
| M4 | 0.7 mm | 2.0 mm | 2 mm |
| M5 | 0.8 mm | 2.5 mm | 2.5 mm |
| M6 | 1.0 mm | 3.0 mm | 3 mm |
| M8 | 1.25 mm | 4.0 mm | 4 mm |
| M10 | 1.5 mm | 5.0 mm | 5 mm |
| M12 | 1.75 mm | 6.0 mm | 6 mm |
Cup Point Selection Guide
⚠️ Important Consideration
Cup point set screws will mark the shaft. The cutting edge creates a permanent circular indentation. This is intentional — the indentation is what provides the grip.
If you need to reposition: Use flat point (ISO 4026) or dog point (ISO 4028) instead. Cup points are best for permanent installations.
Set Screw Point Comparison
| Point Style | Holding Power | Vibration Resistance | Marks Shaft? |
|---|---|---|---|
| Cup Point (ISO 4029) | ★★★★★ | ★★★★★ | Yes |
| Cone Point (ISO 4027) | ★★★★☆ | ★★★★☆ | Yes |
| Flat Point (ISO 4026) | ★★★☆☆ | ★★★☆☆ | Minimal |
| Dog Point (ISO 4028) | ★★★★☆ | ★★★★★ | No |
Common Applications
Shop ISO 4029 Cup Point Set Screws
DIN 916 equivalent. Maximum holding power. Available in alloy steel and stainless.
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