RS PRO, Pozidriv Countersunk Steel, Machine Screw DIN 965, M2.5x10mm
- RS Stock No.:
- 9087475
- Brand:
- RS PRO
Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
EU Directives 2011/65/EU and 2015/863 restrict the use of the 10 substances below in the manufacture of specified types of electrical equipment.
Whilst this restriction does not legally apply to components, it is recognised that component “compliance” is relevant to many customers.
RS definition of RoHS Compliance:
- The product does not contain any of the restricted substances in concentrations and applications banned by the Directive,
- and for components, the product is capable of being worked on at the higher temperatures required by lead–free soldering
The restricted substances and maximum allowed concentrations in the homogenous material are, by weight:
| Substance | Concentration |
| Lead | 0.1% |
| Mercury | 0.1% |
| PBB (Polybrominated Biphenyls) | 0.1% |
| PBDE ( Polybrominated Diphenyl Ethers) | 0.1% |
| Hexavalent Chromium | 0.1% |
| Cadmium | 0.01% |
| DEHP (Bis (2-Ethylhexl) phthalate) | 0.1% |
| BBP (Benzyl butyl phthalate) | 0.1% |
| DBP (Dibutyl phthalate) | 0.1% |
| DIBP (Diisobutyl phthalate) | 0.1% |
The supplier of the item listed below has informed RS Components that the product is "RoHS Compliant".
RS Components has taken all reasonable steps to confirm this statement. Information relates only to products sold on or after the date of this certificate.
| RS stock number | 9087475 |
| Product description | RS PRO, Pozidriv Countersunk Steel, Machine Screw DIN 965, M2.5x10mm |
| Manufacturer / Brand | RS PRO |
RS Components Ltd, Birchington Road, Corby, Northants, NN17 9RS, UK
Statement of Conformity
This statement confirms that the product detailed below complies with the specifications currently published in the RS media and has been subject to the strict quality conditions imposed by RS Components’ internal management systems. Furthermore and where applicable, it confirms that all relevant semiconductor devices have been handled and packed under conditions that meet the administrative and technical requirements of ANSI/ESD S20.20 and EN61340-5-1 electrostatics control standards.
| RS stock number | 9087475 |
| Product description | RS PRO, Pozidriv Countersunk Steel, Machine Screw DIN 965, M2.5x10mm |
| Manufacturer / Brand | RS PRO |
The foregoing information relates to product sold on, or after, the date shown below.
RS COMPONENTS
| Date | Dec 30, 2024 |
RS Components Pte Ltd Robinson Road, P.O. Box 1582, Singapore 903132
Product Details
RS PRO BZP Plated Steel Countersunk Pozidriv Machine Screws
From RS PRO a high-quality machine screw with a flat countersunk head for flush fitting and a versatile Pozidriv recess for a superior grip when tightening. This machine screw has a metric thread and is made from high-quality BZP (Bright Zinc Plated) steel which slows down rusting and corrosion
Note
The function of this product requires the use of a screwdriver. To see the range of countersunk head machine screws please refer to the datasheet and range overview download sheet. Through these two documents you will also find the various thread sizes and lengths that we have to offer.
If bright zinc plated steel is not what you are looking for, we also offer the cross-recess and flat head machine screws in stainless steel and nickel plated brass, to find these please refer to the fasteners selection guide.
What is a Machine Screw?
A machine screw is similar to a bolt but has a socket or slot in its head that allows it to be turned by a screwdriver. The shank on a machine screw is straight rather than tapered with a full thread which is uniform along the entire length. Machine screws do not tap their own thread into materials like wood screws do but are designed to be fastened into pre-tapped holes in the parts they are fastening together. Having a threaded hole creates a stronger joint and results in a higher quality product.
What is a Countersunk Screw?
Countersunk machine screws, also known as CSK screws have a flat head design so when placed in a pre-drilled countersunk hole they will sit flush with or below the surface of the surrounding material. These screw heads are ideal for use when you need to cover the heads with a screw cap or create a flat surface for placing objects on or fixing other objects to.
What is a Pozidriv Head Type?
Pozidriv, sometimes shortened to Pozi, stands for “positive drive”. This head type has a cross recess in the centre with four small indentations around it creating 8 points of contact. This design provides improved engagement and contact with the screwdriver and prevents ejection force when tightening or loosening the machine screw.
What is Bright Zinc Plating (BZP?)
BZP is a shiny coating is applied to the steel, this process prevents corrosion and rusting. If the application is situated within a harsh environment, BZP will provide much-needed longevity and reliability. Although it may not be as effective as stainless steel, the added benefit would be the price. As stainless steel is completely rustproof but expensive, BZP Steel offers a great solution and is massively cost-effective.
Features and Benefits
• Pozidriv head type for improved screwdriver grip
• Countersunk head for a flush finish
• Bright Zinc Plated steel for resistance to corrosion
• Meets DIN 965 Standards
Machine screws are designed to hold separate components together in a wide range of applications such as industrial machinery and vehicle engines. They are screwed through pre-drilled tapped holes in 2 components and can be fastened at the rear with a nut. This bright zinc plated steel machine screw is ideal for domestic and commercial use. Applications include.
• Electrical panel building
• PCB Prototyping
• Circuit board mounting
• General production engineering
• General maintenance and repair.
• Light fastening applications
Frequently Asked Questions
What Does M2.5, M3, M3.5, M4, M5 Mean?
These measurements are found on metric screws, The 'M' stands for Metric. The number after the 'M' is the nominal outer diameter of the screw in mm.
How Do I Cut a Machine Screw?
Damage to the machine screw threads can prevent parts from fitting together properly, therefore care has to be taken when cutting them and the correct tools used.
Cutting a small machine screw (up to standard size #10 or metric size M5 (5mm)
Use a pair of multipurpose wire strippers or electricians pliers that feature M2.5, M3, M3.5, M4, M5 threaded holes. These holes are designed for cutting bolts without damaging the thread. Open the jaws and thread the machine screw into the correct size hole to the distance required. Squeeze the tool handles closed and the screw will be cut at the point where the two halves of the jaws come together. You will have a clean cut without any thread damage.
Cutting a large machine screw (larger than size #10 or metric size M5 (5mm)
This is best done using a hacksaw. Thread the nut on the screw until it reaches the desired point on the head side of the cutting line. Place the screw in a vice or clamp to keep it secure when cutting and cut the screw as straight as you can. When you unthread the nut it will repair and realign any threads that may have been damaged by the saw blade.
Specifications
| Attribute | Value |
| Brand | RS PRO |
| Drive Type | Pozidriv |
| Finish | Bright Zinc Plated |
| Length Imperial | 0.394 in |
| DIN Standard | DIN 965 |
| Thread Size Metric | M2.5 |
| Material | Steel |
| Head Shape | Countersunk |
| Thread Pitch | 0.45 mm |
| Length Metric | 10 mm |