M3 x 20mm Slotted Pan Head Captive Screws (DIN 85) - Black Stainless Steel - (A2) Description
The M3 x 20mm Slotted Pan Head Captive Screws (DIN 85) - Black Stainless Steel - (A2) has the following features:
- Captive Diameter (C): 2.2 mm
- Captive Length: 14 mm
- Matte Black Finish
- Head Diameter (D): 6 mm
- Head Diameter (D) Tolerance: +0/-0.7 mm
- Head Height (H): 1.8 mm
- Head Length (H) Tolerance: +0/-0.14 mm
- Length (L): 20 mm
- Manufacturing Standard: DIN 85
- Stainless Steel - (A2)
- Stainless Steel Material Family
- Screw Thread Pitch: 0.5 mm
- Slot Depth (P): 0.95 mm
- Slot Width (A): 0.8 mm
- Suitable Captive Washer: M3 (3 mm)
- Suitable Captive Washer Link: /captive-washers/654116-HACW-M3-A2-BL
- System of Measurement: Metric
- Thread Length (E): 6 mm
- Thread Size: M3 (3 mm)
Discover more about the Slotted Pan Head Captive Screws range.
Slotted pan head captive screws are precision-engineered fasteners specifically designed to address the critical need for secure yet easily accessible components in various engineering applications. The standout feature of these screws is their captive nature, which ensures that once installed, they remain securely attached to the assembly even when loosened. This unique design is particularly advantageous in environments where the loss of a screw could lead to significant operational issues or safety hazards.
These captive screws feature a pan-shaped head with a slotted drive, offering a combination of robust fastening and ease of use. The pan head design allows for an even distribution of pressure across the surface, preventing damage to the materials being fastened, while the slotted drive ensures compatibility with standard tools, making installation and adjustment straightforward.
How Slotted Pan Head Captive Screws Work
Slotted pan head captive screws excel in applications where components need to be frequently accessed or adjusted, but with the assurance that the screws will not fall out or get misplaced.
For instance, they are commonly used in electronic enclosures, where easy access is essential, but the loss of a screw could be detrimental. By maintaining their position even when loosened, these screws significantly improve the longevity and reliability of assemblies.
In the aerospace industry, for example, the use of captive screws is critical. They ensure that during maintenance or inspections, screws do not detach and fall into machinery, where they could cause damage or safety hazards. Similarly, in the medical device industry, these screws are indispensable in ensuring that critical components remain intact during routine maintenance.
What Material Slotted Pan Head Captive Screws Are Made From
Accu’s slotted pan head captive screws are available in two types of high-grade stainless steel: A2 and A4. Each material is chosen for its unique properties, catering to different environmental conditions and application requirements.
A2 stainless steel is the go-to material for general-purpose applications. It offers excellent corrosion resistance and durability, making it suitable for most indoor and light outdoor uses, including electronic assemblies and light machinery.
On the other hand, A4 stainless steel is often referred to as marine-grade stainless steel due to its superior corrosion resistance, especially in saline environments. This makes it the preferred choice for applications in marine, chemical processing and outdoor settings where exposure to harsh environments is a concern.
Size and Type Pan Head Slotted Captive Screws Available
Our pan head slotted captive screws come in a wide range of sizes to accommodate diverse application needs. With thread sizes ranging from M2 (2mm) to M8 (8mm), and lengths spanning from 6mm to 100mm, these screws provide the flexibility to meet precise engineering specifications.
The pan head design, coupled with the slotted drive, offers a balance between ease of installation and a secure hold, making these screws versatile for different types of assemblies.
Whether you need a short captive screw for compact electronic panels or a longer screw for structural components, you’ll find a suitable option within our range.
If you don't need the captive feature, you might find our range of pan-head machine screws useful. Alternatively, for applications requiring similar functionality but with different drive types or head styles our captive screw range has lots to choose from designed to meet the highest standards of precision and reliability, ensuring you get the best possible outcome for your project.
FAQs
Q: Can slotted pan head captive screws be used in high-vibration environments?
A: Yes, slotted pan head captive screws are particularly well-suited for high-vibration environments. Their captive design ensures that even under constant vibration, the screws will remain attached to the assembly, reducing the risk of components loosening or falling out.
Q: Are slotted pan head captive screws reusable after being removed from an assembly?
A: Yes, these screws are designed to be reusable. The captive feature ensures that they stay attached to the component even when loosened, and they can be securely re-tightened multiple times without losing their effectiveness, making them ideal for applications requiring regular maintenance.
Q: How do slotted pan head captive screws compare to traditional screws in terms of installation time?
A: While the installation process for slotted pan head captive screws is similar to that of traditional screws, their captive feature can actually reduce overall assembly time. Since the screws remain attached to the component after loosening, there’s no need to realign or search for screws during maintenance, streamlining the process and improving overall efficiency.
