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IS 2016:1967 is the Indian Standard (BIS) for plain washers - general purpose. This standard prescribes the requirements for plain washers for general engineering purposes. It covers the dimensions, materials, and designation systems for machined and punched washers used with metric bolts, screws, and nuts.
Covers the dimensions and other requirements for plain washers for general engineering purposes.
Consolidated list per BIS. For the text of each amendment, refer to the BIS portal link above.
steelbrasscopperaluminum
International Equivalents
Similar International Standards
ISO 7089:2000ISO (International)
HighCurrent
Plain washers — Normal series — Product grade A
Defines dimensions and technical specifications for general purpose normal-series plain washers, aligning with the 'Normal diameter' series in IS 2016.
ISO 7093-1:2000ISO (International)
HighCurrent
Plain washers — Large series — Part 1: Product grade A
Specifies large-series plain washers, directly corresponding to the 'Large diameter' series described in IS 2016.
ASME B18.21.1-2009ASME (US)
MediumCurrent
Washers: Helical Spring-Lock, Tooth Lock, and Plain Washers (Inch and Metric)
Covers a wide range of washers; its metric plain washer 'Type A, Regular' series is dimensionally similar to IS 2016's normal series.
DIN 125-1DIN (Germany)
HighWithdrawn
Washers - Part 1: Product grade A washers without chamfer
A historically significant standard for plain washers that was dimensionally almost identical to the normal series in IS 2016.
Key Differences
≠IS 2016 is a 1967 standard with minimal revisions, while ISO and ASME standards are regularly updated to reflect modern material science, manufacturing processes, and performance requirements.
≠ISO standards specify 'Product Grades' (e.g., A and C), which define strict dimensional and geometric tolerance levels. IS 2016 specifies a single set of tolerances without this grading system.
≠Modern ISO standards (e.g., ISO 7089) define specific hardness classes (e.g., 200HV, 300HV) with a defined hardness range. IS 2016 only specifies a minimum hardness of 140 HV for steel washers, offering less specific guidance for different applications.
≠IS 2016 provides dimensions for washers up to a nominal size of 150 mm, whereas the primary ISO standards for general purpose washers (7089/7093) typically cover sizes up to 64 mm.
Key Similarities
≈All standards define washers for the same fundamental purpose: to distribute the load of a threaded fastener and provide a smooth bearing surface.
≈The concept of providing distinct 'Normal' and 'Large' outside diameter series for a given nominal fastener size is a common feature in both IS 2016 and the ISO 7089/7093 standards.
≈The basic dimensional relationships (inside diameter, outside diameter, thickness) for common metric sizes are highly consistent between IS 2016 and their ISO counterparts, especially for the normal series.
≈Steel is identified as the primary material in all standards, with hardness being the key mechanical property specified to ensure performance and prevent yielding under load.
Parameter Comparison
Parameter
IS Value
International
Source
Nominal Size M10 - Inside Diameter (d1)
10.5 mm
10.5 mm (+0.36, -0)
ISO 7089:2000 (Grade A)
Nominal Size M10 - Outside Diameter, Normal (d2)
21.0 mm
20.0 mm
ISO 7089:2000
Nominal Size M10 - Thickness, Normal (h)
2.0 mm
2.0 mm (±0.3)
ISO 7089:2000
Nominal Size M16 - Inside Diameter (d1)
17.0 mm
17.0 mm (+0.43, -0)
ISO 7089:2000 (Grade A)
Nominal Size M16 - Outside Diameter, Normal (d2)
30.0 mm
30.0 mm (±0.8)
ISO 7089:2000
Nominal Size M16 - Outside Diameter, Large (d2)
50.0 mm
50.0 mm (±1.0)
ISO 7093-1:2000
Steel Hardness Requirement
Not less than 140 HV
200 HV to 300 HV (for 200HV class) or 300 HV to 370 HV (for 300HV class)
ISO 7089:2000
⚠ Verify details from original standards before use
What materials are covered for plain washers under IS 2016?+
The standard covers steel, brass, copper, and aluminum washers.
How should a plain washer be designated?+
By name, type (Machined or Punched), nominal bolt size, material, and IS number (e.g., Washer Machined M12 IS 2016).
What is the difference between Type A and Type B punched washers?+
Type A has a standard outer diameter and thickness for normal clearance, whereas Type B is designed for larger clearance and rougher bolt applications.