AGARWAL SONS
HOUSE OF FASTENERS, HAND TOOLS AND GENERAL HARDWARE
SPRING WASHERS
Spring washers are made out of spring steel and are hardened to HV 430 to 530 and are used along with almost every externally threaded fastener.
Flat (Rectangular) and Square sections are the generally used types of spring washers. Square section spring washers are used for use with fasteners with cylindrical heads and Flat section spring washers are used for all other types of heads. Spring washers of square section are lighter, and thereby, cheaper than the ones with a rectangular section.
These washers are normally available in Black finish. Other finishes like zinc coated (with hydrogen de-embrittlement) in Blue or Yellow passivation, Cadmium Plated, Nickle Plated, Bright Chromium plated and Phosphated are also available.
Size Range
Flat (Rectangular) Section
- 3 to 52 in MM series generally conforming to IS 3063-1994 and DIN 127
- 1/8” to 2” in inch series generally conforming to BS 1802-1951
Square Section
- 3 to 52 in MM series generally conforming to IS 6735-1994 din 7980
- 1/8” to 2” in inch series generally conforming to BS 1802-1951
IMPORTANT DIMENSIONS OF SPRING WASHERS
SPRING WASHERS – FLAT (RECTANGULAR) SECTION CONFORMING TO IS 3063-1994
All dimensions in mm
NOM SIZE | Inner Dia (d) Basic Tol (+) | Outer Dia (d1) Max | WIDTH (b) Basic Tol (+ or -) | THICKNESS (S) Basic Tol (+ or -) | Weight per 1000 in Kgs | |||
3 | 3.1 | 0.3 | 6.2 | 1.3 | 0.1 | 0.8 | 0.1 | 0.11 |
4 | 4.1 | 0.3 | 7.6 | 1.5 | 0.1 | 0.9 | 0.1 | 0.18 |
5 | 5.1 | 0.3 | 9.2 | 1.8 | 0.1 | 1.2 | 0.1 | 0.36 |
6 | 6.1 | 0.4 | 11.8 | 2.5 | 0.15 | 1.6 | 0.1 | 0.83 |
8 | 8.1 | 0.4 | 14.8 | 3 | 0.15 | 2 | 0.1 | 1.60 |
10 | 10.2 | 0.5 | 18.1 | 3.5 | 0.2 | 2.2 | 0.15 | 2.53 |
12 | 12.2 | 0.5 | 21.1 | 4 | 0.2 | 2.5 | 0.15 | 3.82 |
14 | 14.2 | 0.5 | 24.1 | 4.5 | 0.2 | 3 | 0.15 | 6.01 |
16 | 16.2 | 0.8 | 27.4 | 5 | 0.2 | 3.5 | 0.2 | 8.91 |
18 | 18.2 | 0.8 | 29.4 | 5 | 0.2 | 3.5 | 0.2 | 9.73 |
20 | 20.2 | 1 | 33.6 | 6 | 0.2 | 4 | 0.2 | 15.20 |
22 | 22.5 | 1 | 35.9 | 6 | 0.2 | 4 | 0.2 | 16.50 |
24 | 24.5 | 1 | 40 | 7 | 0.25 | 5 | 0.2 | 26.20 |
27 | 27.5 | 1 | 43 | 7 | 0.25 | 5 | 0.2 | 28.70 |
30 | 30.5 | 1.2 | 48.2 | 8 | 0.25 | 6 | 0.2 | 44.30 |
33 | 33.5 | 1.2 | 55.2 | 10 | 0.25 | 6 | 0.2 | 63.00 |
36 | 36.5 | 1.2 | 58.2 | 10 | 0.25 | 6 | 0.2 | 67.30 |
39 | 39.5 | 1.2 | 61.2 | 10 | 0.25 | 6 | 0.2 | 71.70 |
42 | 42.5 | 1.2 | 68.2 | 12 | 0.25 | 7 | 0.25 | 111.00 |
45 | 45.5 | 1.2 | 71.2 | 12 | 0.25 | 7 | 0.25 | 117.00 |
48 | 49 | 1.5 | 75 | 12 | 0.25 | 7 | 0.25 | 123.00 |
52 | 53 | 1.5 | 83 | 14 | 0.25 | 8 | 0.25 | 182.00 |
SPRING WASHERS – SQUARE SECTION CONFORMING TO IS 6735-1972
All dimensions in mm
NOM SIZE | Inner Dia (d) Basic Tol (+) | Outer Dia (d1) Max | WIDTH (b) = THICKNESS(s) Basic Tol (+ or -) | Weight per 1000 IN KGS | ||
3 | 3.1 | 0.3 | 5.6 | 1 | 0.1 | 0.105 |
4 | 4.1 | 0.3 | 7 | 1.2 | 0.1 | 0.195 |
5 | 5.1 | 0.3 | 8.8 | 1.6 | 0.1 | 0.370 |
6 | 6.1 | 0.4 | 9.9 | 1.6 | 0.1 | 0.425 |
8 | 8.1 | 0.4 | 12.7 | 2 | 0.1 | 1.05 |
10 | 10.2 | 0.5 | 16 | 2.5 | 0.15 | 1.96 |
12 | 12.2 | 0.5 | 18 | 2.5 | 0.15 | 2.28 |
14 | 14.2 | 0.5 | 21.1 | 3 | 0.2 | 3.8 |
16 | 16.2 | 0.8 | 24.4 | 3.5 | 0.2 | 5.94 |
18 | 18.2 | 0.8 | 26.4 | 3.5 | 0.2 | 6.6 |
20 | 20.2 | 1 | 30.6 | 4.5 | 0.2 | 12.3 |
22 | 22.5 | 1 | 32.9 | 4.5 | 0.2 | 13.6 |
24 | 24.5 | 1 | 35.9 | 5 | 0.2 | 18.1 |
27 | 27.5 | 1 | 38.9 | 5 | 0.2 | 20.6 |
30 | 30.5 | 1.2 | 44.1 | 6 | 0.2 | 32 |
33 | 33.5 | 1.2 | 47.2 | 6 | 0.2 | 35 |
36 | 36.5 | 1.2 | 52.2 | 7 | 0.25 | 52.5 |
39 | 39.5 | 1.2 | 55.2 | 7 | 0.25 | 56.1 |
42 | 42.5 | 1.2 | 60.2 | 8 | 0.25 | 80 |
45 | 45.5 | 1.2 | 64 | 8 | 0.25 | 85.3 |
48 | 49 | 1.5 | 67 | 8 | 0.25 | 90 |
SPRING WASHERS FLAT AND SQUARE SECTION AS PER BSS 1802-1951
All dimensions in mm
SIZE IN INCHES | SIZE IN MM | FLAT SECTION WIDTH X THICKNESS | SQUARE SECTION WIDTH AND THICKNESS |
1/8” | 3.18 | 1.2 X 0.8 | – |
5/32” | 3.97 | 1.6 X 0.8 | – |
3/16” | 4.76 | 2.3 X 1.2 | 1.6 |
¼” | 6.35 | 2.3 X 1.6 | 1.8 |
5/16” | 7.94 | 3.3 X 1.6 | 2 |
3/8” | 9.53 | 3.7 X 1.6 | 2.3 |
7/16” | 11.11 | 4.1 X 1.6 | 2.6 |
½” | 12.70 | 4.1 X 2.3 | 3 |
9/16” | 14.29 | 4.9 X 2.3 | 3.3 |
5/8” | 15.88 | 4.9 X 3.3 | 3.7 |
¾” | 19.05 | 5.9 X 3.3 | 4.5 |
7/8” | 22.23 | 6.4 X 3.3 | 5.4 |
1” | 25.40 | 7.1 X 4.7 | 5.9 |
