Cover Plates, Cover Assemblies & Nut Plates
JD Industries is a leading oil filter cover assembly manufacturer in India, producing a comprehensive range of cover plates, cover assemblies, and nut plates for oil and hydraulic filter systems. As a trusted oil filter plate manufacturer in India and established oil filter parts manufacturer in India, we bring over 25 years of precision sheet metal manufacturing expertise and ISO 9001:2015 certified quality processes to every component we produce. With over 200+ SKUs manufactured to OEM requirements, JD Industries is the preferred sourcing partner for filter manufacturers, automobile OEMs, aftermarket dealers, and international export buyers across the globe.
What are Cover Plates & Cover Assemblies?
A cover plate — also referred to as a filter cover assembly or top cover plate — is a precision stamped and formed steel component that serves as the structural and sealing interface at the top of an oil or hydraulic filter assembly. It integrates directly with the filter bowl and element, providing a rigid mounting surface, secure thread engagement, and a leak-proof seal under operating fluid pressures. The cover plate is one of the most critical components in a filter assembly, directly influencing the overall integrity, performance, and service life of the filtration system.
What is a Nut Plate?
A nut plate — also known as a filter nut plate or oil filter bowl plate — is a precision formed component integrated into the cover assembly that provides the threaded engagement point for the filter bowl or mounting stud. As a specialized oil filter nut plate manufacturer in India, JD Industries manufactures nut plates with precise thread profiles and tight dimensional tolerances, ensuring reliable thread engagement, vibration resistance, and long-term structural integrity across all filter assembly configurations.
What is a Strainer Cover?
A strainer cover is a cover plate variant specifically designed for strainer-type filter assemblies used in tractors and agricultural machinery. It forms the top sealing and mounting surface of the strainer housing, ensuring secure fitment and leak-proof performance in agricultural hydraulic and fuel filtration systems. JD Industries manufactures strainer covers to OEM specifications for all major tractor platforms used across India and international markets.
Our Cover Assembly Range & Specifications
At JD Industries, we manufacture cover plates, cover assemblies, and nut plates across a comprehensive dimensional range to serve diverse filter assembly requirements. Our components are available with an:
Outer diameter ranging from 50mm to 150mm,
Top cover plate thickness from 1.50mm to 6.00mm,
Retainer thickness from 0.30mm to 2.00mm,
Thread sizes from 10mm to 150mm.
All components are available in CRS, HRS, Zincro, ZAM, and MS material grades, offering the right balance of strength, corrosion resistance, and formability for each specific application. Custom dimensions and material specifications are available on request.
Industries & Applications
Our cover plates and cover assemblies are engineered for a broad range of applications including passenger vehicle oil filters, commercial truck hydraulic filters, agricultural tractor strainer assemblies, and industrial hydraulic filtration systems. As an established oil filter bowl plate manufacturer in India and trusted oil filter cover assembly manufacturer in India, JD Industries supplies cover assemblies that are compatible with a wide variety of filter housing configurations, ensuring consistent fitment, sealing performance, and structural reliability across all applications.
New Product Development & Customisation
At JD Industries, we understand that every OEM and filter manufacturer has unique design and dimensional requirements. Our in-house tooling and die-making capability enables us to offer complete new product development and full customisation of cover plates, nut plates, and cover assemblies as per client specifications — from initial prototype through to full-scale production. Whether you need a standard SKU or a bespoke component designed to your exact drawing, JD Industries has the engineering capability and manufacturing capacity to deliver.
Why Source Cover Assemblies from JD Industries?
- ISO 9001:2015 certified oil filter cover assembly manufacturer in India
- 200+ SKUs manufactured to OEM specifications
- OD range 50mm to 150mm, cover plate thickness 1.50mm to 6.00mm
- Retainer thickness 0.30mm to 2.00mm, thread size 10mm to 150mm
- Available in CRS, HRS, Zincro, ZAM & MS material grades
- Full customisation & new product development available
- Trusted oil filter parts manufacturer in India since 1998
- Export-ready packaging and documentation for international buyers.