Tornillo mecánico, Acero Inoxidable, , Avellanado 20mm, M4 0.7

Documentación Técnica
Legislación y Conformidad
Certificado de conformidad RoHS
Datos del Producto

Tornillos mecanizados de cabeza avellanada, rosca métrica: acero inoxidable A4

RS Pro presenta una gama de tornillos mecánicos de cabeza avellanada de calidad superior con una rosca métrica. Las fijaciones totalmente roscadas tienen una cabeza avellanada, cuando se utilizan con un orificio perforado proporcionan un acabado enrasado. Estas fijaciones de acero inoxidable tipo 316 (también conocido como grado marino) de grado A4 están disponibles en una variedad de longitudes y tamaños de rosca para adaptarse a casi cualquier aplicación.

Aplicaciones típicas

• Piscinas
• Plantas químicas
• Conexiones de pisos de barco
• Equipos de productos lácteos
• Equipo de esterilización médica
• Plantas de tratamiento de alcantarillado

Características y ventajas

• Conforme a DIN965
• Acero inoxidable 18/8 grado A4 (tipo 316 S16)
• Mayor nivel de resistencia a la corrosión que el acero inoxidable A2
• Excelente resistencia a corrosión
• Fuerte resistencia a la abrasión
• Respetuosa con el medio ambiente, el acero inoxidable es completamente reciclable
• Larga vida útil
• Bajo mantenimiento
• Fácil de limpiar
• Amplio rango de temperaturas, se puede utilizar hasta 300 °C

A machine screw is similar to a bolt but has a socket or a 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.

Features and Benefits

• Pozidriv head type for improved screwdriver grip
• Countersunk head for a flush finish
• A4 316 Marine Grade stainless steel for excellent corrosion resistance, resistance to
chloride and ability to withstand extremes of temperature
• Easily cleanable
• Meets DIN 965 Standards

What are Machine Screws Used For?

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 fastened at the rear with a nut. This marine grade 316 steel machine screw is ideal for use in the following:

• Swimming pools
• Chemical plants
• Boat deck fittings
• Dairy equipment
• Medical sterilising equipment
• Sewerage treatment plants

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.

Atributo Valor
Forma del Cabezal Cabeza avellanada
Tipo de Accionador Pozidriv
Longitud métrica 20mm
Tamaño de la Rosca Métrica M4
Material Acero Inoxidable
Tipo de Acero Inoxidable A4 316
Espaciado de rosca 0.7
150 Disponible para entrega en 24/48 horas
Precio 1 Bolsa de 100
(exc. IVA)
Por Bolsa
Por unidad*
1 - 4
11,21 €
0,112 €
5 - 9
10,65 €
0,106 €
10 - 29
10,09 €
0,101 €
30 +
9,42 €
0,094 €
*precio indicativo