Metric Oval Neck Bolt for Grooved Couplings

Standard: DIN 5903-1 / BS 325 Material Standard: Carbon steel according to ISO 898-1, Class 8.8 Surface Protection: Zinc electroplated to ISO 2081 Fe/Zn5 or chromed to ISO 4520 Class 1A Size Range: M10 to M22 Length Options: 50–150 mm Torque Range: 40–325 N·m

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Трубопроводы и комплектующие

Аксессуары для пазовых фитингов

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The Metric Oval Neck Bolt is used with a metric heavy hex nut to tighten grooved coupling housings and apply compression to the gasket for sealing. Made from carbon steel Class 8.8, it is suitable for grooved piping connection assemblies that require reliable fastening strength.

Key Features

Metric oval neck bolt for grooved coupling assemblies
Used with metric heavy hexagon nut
Helps tighten coupling housing securely
Applies pressure to the gasket for sealing performance
Carbon steel construction according to ISO 898-1 Class 8.8
Available in M10, M12, M16, M20, and M22 sizes
Zinc electroplated or chromed surface finish available

Product Configurations

Item	Details
Application	Grooved coupling housing fastening
Matching Nut	Metric heavy hexagon nut
Thread Type	Coarse metric thread
Bolt Size Options	M10, M12, M16, M20, M22
Length Range	50 mm to 150 mm, depending on bolt size
Material Grade	Carbon steel, ISO 898-1 Class 8.8
Recommended Torque	40–325 N·m, depending on size
Surface Finish	Zinc electroplated or chromed

FAQ
Q1: Who are we?
A: We are a fire fighting equipment manufacturer based in Fujian, China. Since 2004, we have supplied a wide range of fire safety products for domestic and international markets, including fire sprinklers, hydrants, valves, hoses and extinguishers.
Q2: How do we ensure product quality?
A: We follow strict quality control procedures from raw material inspection to production and final shipment. Pre-production samples and final inspections can be arranged according to order requirements.
Q3: What products do we supply?
A: We supply fire sprinklers, fire extinguishers, fire hydrants, fire valves, fire hoses, hose reels, fire cabinets, foam equipment and other fire fighting accessories.
Q4: Why choose Sunroom?
A: Sunroom has over 21 years of experience in fire fighting equipment manufacturing. We offer a wide product range, support customized production, and provide certificates or technical documents according to product and project requirements.

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