Washers are often underestimated in the fastener world — but choosing the wrong washer type can lead to joint failures, vibration loosening, and costly field returns. At Shri Diya Engineering Works, we manufacture all types of washers for industrial and OEM applications from our Hyderabad production facility. This guide helps you understand which washer type is right for your assembly.
The Purpose of Washers
Washers serve several important functions in a bolted joint:
- Distribute clamping load over a larger surface area, preventing surface damage
- Reduce friction during torquing, ensuring accurate clamping force
- Prevent loosening due to vibration (spring washers and lock washers)
- Provide electrical insulation or conductivity (depending on material)
- Act as spacers or shims in assemblies requiring precise gap control
Types of Washers We Manufacture
Flat Washers (Plain Washers)
The most basic washer type — a flat ring with a hole in the center. Used to distribute load under bolt heads and nuts. Available in DIN 125, DIN 9021 (wide flat washer), and custom sizes. Material options include mild steel, stainless steel (SS304/SS316), and galvanized steel.
Spring Washers (Lock Washers)
Split washers with a helical design that applies spring tension to prevent loosening. Spring washers are critical in applications subject to vibration — automotive, industrial machinery, pumps, motors, and compressors. We manufacture DIN 127 spring washers in a range of sizes.
Conical/Belleville Washers
Disc-shaped washers with a conical profile that acts as a spring under load. Used in applications requiring controlled preload and vibration resistance. Common in precision machinery and valve assemblies.
Toothed Lock Washers (Internal/External Tooth)
Star-shaped serrations bite into the mating surface to resist rotation and prevent loosening. Better vibration resistance than split washers in many applications.
Sealing Washers
Used with bolts and screws that must seal a hole against fluid or pressure. Commonly used in hydraulic and pneumatic systems, outdoor electrical connections, and plumbing applications.
Material Selection Guide
- Mild Steel (plain or zinc-plated) – General purpose, indoor applications with low corrosion exposure
- Hot-Dip Galvanized – Outdoor applications, construction, and infrastructure
- Stainless Steel SS304 – Food processing, chemical, and mildly corrosive environments
- Stainless Steel SS316 – Marine, coastal, and highly corrosive environments
- Brass – Electrical applications, plumbing, and decorative applications
Sourcing Washers in India
Shri Diya Engineering Works supplies flat and spring washers to OEMs, assembly plants, hardware distributors, and industrial buyers across India. We offer both standard DIN sizes and custom specifications including non-standard inner diameter, outer diameter, and thickness combinations.
Bulk Orders Welcome
Our production capacity supports large-volume orders for assembly line requirements. We dispatch standard items within 3-5 working days and can accommodate urgency with expedited production scheduling. Contact us for pricing on quantities above 5,000 pieces — we offer volume discounts that significantly reduce per-unit cost.
Contact Us for a Quote
Tell us the size, type, material, quantity, and delivery location — we will respond within 24 hours with a quotation. We supply across Telangana, Andhra Pradesh, Maharashtra, Karnataka, Tamil Nadu, and all major industrial states.
Shri Diya Engineering Works | Kushaiguda, Hyderabad | GSTIN: 36AUJPD4072C1ZZ
