The Slotted Pan Head Machine Screw (manufactured to DIN 85 / ISO 1580 standards) is a versatile metric fastener featuring a rounded head with a traditional flat drive. Unlike Phillips drives that can “cam-out” (slip) under low pressure, the Slotted Pan Head Machine Screw allows for controlled manual tightening using a simple flat-blade screwdriver, making it ideal for delicate assembly work, antique restoration, and consumer electronics where user-serviceability is required.
Product Overview: Precision-engineered from Stainless Steel A2 (304) or A4 (316), our Slotted Pan Head Machine Screw offers exceptional corrosion resistance. Its smooth, snag-free head profile makes it perfect for securing external panels and decorative trim.
Slotted Pan Head Machine Screw Specifications
| Product Name | Slotted Pan Head Machine Screw / Cheese Head Screw (Incorrect but common) |
| Standard | DIN 85 (Metric) / ISO 1580 |
| Material Grade | Stainless Steel A2 (304) / A4 (316) |
| Head Style | Pan Head (Rounded Top, Flat Bearing Surface) |
| Drive Type | Slotted (Flat Blade) |
Engineering Insight: The Return of the Slotted Drive
While often considered “old fashioned,” the Slotted Pan Head Machine Screw has specific engineering advantages:
- Cleanability: The single continuous slot is easy to wipe clean, preventing the buildup of grease and bacteria found in the complex recesses of Pozi or Torx screws. This is why DIN 85 is often specified in food processing machinery.
- Visual Simplicity: For architectural hardware and lighting fixtures, the simple line of a slotted screw offers a minimalist, retro aesthetic that modern drives cannot match.
For more details on screw drive types, please refer to the Slotted screw drive entry on Wikipedia.
Material Guide: A2 vs A4
- A2 (304): The standard for general construction, signage, and household appliances.
- A4 (316): Marine grade. Essential for boat fittings and outdoor electrical enclosures exposed to salt spray.
Frequently Asked Questions (FAQ)
Q: What tool do I need?
A: A standard flat-head (slotted) screwdriver. Ensure the blade width matches the slot length to prevent damaging the screw head.
Q: Is DIN 85 the same as DIN 963?
A: No. DIN 85 is a Pan Head (sits on top of the surface). DIN 963 is a Countersunk Head (sits flush with the surface).
Need Metric Slotted Screws?
Handan Bolt stocks a wide range of Slotted Pan Head Machine Screws from M1.6 micro screws up to M10 heavy-duty sizes.
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