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RS PRO Pozidriv Countersunk Stainless Steel Machine Screw 25 mm M4 158-3641
Specifications
| Country of Origin | India |
|---|---|
| Brand | RS PRO |
| Material | Stainless Steel |
| Grade | A4 |
| Length | 25mm |
| Model | 158-3641 |
| Drive Type | Pozidriv |
| Head Shape | Countersunk |
| Thread | M4 |
| Standards/Approvals | DIN 965 |
| RS PRO Pozidriv Countersunk Stainless Steel Machine Screw 20 mm M4Brand | RS PRO |
Key Features
- Made from high-quality A4 316 marine grade stainless steel for excellent corrosion and chloride resistance.
- Flat countersunk head design ensures flush fitting into materials.
- Pozidriv drive type provides superior grip and prevents tool cam-out.
- Complies with DIN 965 standards for machine screws.
- Suitable for marine, chemical, medical, and industrial applications.
- Threaded fully with metric M4 sizing for pre-tapped hole fastening.
- Ideal for high-strength and corrosion-prone environments.
Product Description
RS PRO 158-3641 is a Pozidriv countersunk stainless steel machine screw with 25 mm length and metric M4 threading. Manufactured from premium A4 316 marine grade stainless steel, it offers superior corrosion resistance especially suited for chloride-rich and harsh environments. The countersunk flat head design allows it to sit flush with the surface, providing a clean finish and enabling screw caps or other fixtures to be applied smoothly.
This screw features a Pozidriv recess providing 8 points of contact which enhances screwdriver engagement and reduces cam-out during tightening and loosening operations. Meeting the DIN 965 standard, the screw ensures quality and dimensional accuracy, making it ideal for industrial, marine, chemical, medical sterilizing equipment, swimming pools, boat deck fittings, dairy machinery, and sewage treatment plants where durability and corrosion resistance are critical.
A machine screw is designed to fasten components by engaging with pre-tapped holes, resulting in stronger joints compared to non-threaded fasteners. The fully threaded shank and precise thread pitch allow reliable fastening in assemblies requiring high mechanical strength.
The use of A4 316 stainless steel grade, commonly called marine grade steel, is especially important for applications exposed to severe conditions including temperature extremes and chloride environments, ensuring a longer service life and reduced maintenance.
Constructed with A4 316 marine grade stainless steel for high corrosion resistance. Flat countersunk head design to allow flush mounting in materials. Pozidriv drive type delivers excellent screwdriver engagement and torque transmission.
Fully threaded metric M4 shaft suitable for assembly in pre-tapped holes. Compliant with DIN 965 standards ensuring reliability and uniformity. Versatile usage in industrial machinery, marine equipment, chemical plants, and medical devices.
This screw is an essential component in industries requiring robust and corrosion-proof fastening solutions. Browse our Industrial Tools & Equipment category for more quality Machine Screws and fasteners.
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Frequently Asked Questions
It features a Pozidriv drive type, which provides superior grip and reduces the risk of tool cam-out.
The screw has a fully threaded metric M4 sizing, suitable for pre-tapped hole fastening.
It is constructed from A4 316 marine grade stainless steel, offering excellent corrosion resistance.
It complies with DIN 965 standards for machine screws, ensuring quality and dimensional accuracy.
This model is suitable for marine, chemical, medical, and industrial applications, particularly in environments prone to corrosion.
Yes, it is designed for high-strength and corrosion-prone environments, making it ideal for demanding applications.
The Pozidriv recess provides 8 points of contact, enhancing screwdriver engagement and reducing cam-out during tightening and loosening.
The country of origin for this product is India.
The fully threaded shank allows for reliable fastening in assemblies requiring high mechanical strength.
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