Suppliers of Helical spring-lock washers, inch sizes

Standard ASME B18.21.1 TABLE 1

Helical spring-lock washers, regular series

Dimensions in inches: source ASME B18.21.1 -2009-Table 1 Regular series
Nominal washer size	A max	A min	B max	T mean section thickness (t1+t)/2	W min
No.2 (0.086)	0.094	0.088	0.172	0.020	0.035
No.3 (0.099)	0.107	0.101	0.195	0.025	0.040
No.4 (0.112)	0.120	0.114	0.209	0.025	0.040
No.5 (0.125)	0.133	0.127	0.236	0.031	0.047
No.6 (0.138)	0.148	0.141	0.250	0.031	0.047
No.8 (0.164)	0.174	0.167	0.293	0.040	0.055
No.10 (0.190)
No.12 (0.216)
1/4- (0.250)
5/16- (0.3125)
3/8- (0.375)
7/16-(0.4375)
1/2- (0.5)
9/16- (0.5625)
5/8- (0.625)
11/16- (0.6875)
3/4- (0.75)
13/16-(0.8125)
7/8- (0.875)
15/16 (0.9375)
1- (1)
1-1/16 (1.0625)
1-1/8 (1.125)
1-3/16 (1.875)
1- 1/4 (1.25)
1 - 5/16 (1.3125)
1 - 3/8 (1.375)
1 - 7/16 (1.4375)
1 - 1/2 (1.5)
1 - 5/8 (1.625)
1 - 3/4 (1.75)
1 - 7/8 (1.875)
2 (2)
2 - 1/4 (2.5)
2 - 1/2 (2.5)
2 - 3/4 (2.75)
3 (3)

The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from IFI – Industrial Fastener Institute, 6363 Oak Tree Blvd Independence, OH 44131, USA.
WARNING - The datasheets provided by this site (fasten.it) are only advisory in support of the commercial activity and their use by anyone is entirely voluntary. Reliance on their contents for any purpose by anyone is at his/her sole risk and Fasten.it s.r.l./www.fasten.it is not responsible for any loss, claim or damage arising there from.

Standard ASME B18.21.1 TABLE 2

Helical spring-lock washers, heavy series

Dimensions in inches: source ASME B18.21.1 -2009-Table 2 Heavy series
Nominal Washer Size	A max	A min	B max	T mean section thickness (t1+t)/2	W min
No.2 (0.086)	0.094	0.088	0.182	0.025	0.040
No.3 (0.099)	0.107	0.101	0.209	0.031	0.047
No.4 (0.112)	0.120	0.114	0.223	0.031	0.047
No.5 (0.125)	0.133	0.127	0.252	0.040	0.055
No.6 (0.138)	0.148	0.141	0.266	0.040	0.055
No.8 (0.164)	0.174	0.167	0.307	0.047	0.062
No.10 (0.190)
No.12 (0.216)
1/4 - (0.250)
5/16 - (0.3125)
3/8 - (0.375)
7/16 -(0.4375)
1/2 - (0.5)
9/16 - (0.5625)
5/8 - (0.625)
11/16 - (0.6875)
3/4 - (0.75)
13/16 -(0.8125)
7/8 - (0.875)
15/16 - (0.9375)
1 - (1)
1-1/16 (1.0625)
1-1/8 (1.125)
1-3/16 (1.875)
1- 1/4 (1.25)
1 - 5/16 (1.3125)
1 - 3/8 (1.375)
1 - 7/16 (1.4375)
1 - 1/2 (1.5)
1 - 5/8 (1.625)
1 - 3/4 (1.75)
1 - 7/8 (1.875)
2 (2)
2 - 1/4 (2.5)
2 - 1/2 (2.5)
2 - 3/4 (2.75)
3 (3)

The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from IFI – Industrial Fastener Institute, 6363 Oak Tree Blvd Independence, OH 44131, USA.
WARNING - The datasheets provided by this site (fasten.it) are only advisory in support of the commercial activity and their use by anyone is entirely voluntary. Reliance on their contents for any purpose by anyone is at his/her sole risk and Fasten.it s.r.l./www.fasten.it is not responsible for any loss, claim or damage arising there from.

Standard ASME B18.21.1 TABLE 3

Helical spring-lock washers extra-duty series

Dimensions in inches: source ASME B18.21.1 -2009-Table 3 Extra-duty series
Nominal washer size	A max	A min	B max	T mean section thickness (t1+t)/2	W min
No.2 (0.086)	0.094	0.088	0.208	0.027	0.053
No.3 (0.099)	0.107	0.101	0.239	0.034	0.062
No.4 (0.112)	0.120	0.114	0.253	0.034	0.062
No.5 (0.125)	0.133	0.127	0.300	0.045	0.079
No.6 (0.138)	0.148	0.141	0.314	0.045	0.079
No.8 (0.164)
No.10 (0.190)
No.12 (0.216)
1/4 - (0.250)
5/16 - (0.3125)
3/8 - (0.375)
7/16 -(0.4375)
1/2 - (0.5)
9/16 - (0.5625)
5/8 - (0.625)
11/16 - (0.6875)
3/4 - (0.75)
13/16 -(0.8125)
7/8 - (0.875)
15/16 (0.9375)
1 - (1)
1-1/16 (1.0625)
1-1/8 (1.125)
1-3/16 (1.875)
1- 1/4 (1.25)
1 - 5/16 (1.3125)
1 - 3/8 (1.375)
1 - 7/16 (1.4375)
1 - 1/2 (1.5)
1 - 5/8 (1.625)
1 - 3/4 (1.75)
1 - 7/8 (1.875)
2 (2)

The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from IFI – Industrial Fastener Institute, 6363 Oak Tree Blvd Independence, OH 44131, USA.
WARNING - The datasheets provided by this site (fasten.it) are only advisory in support of the commercial activity and their use by anyone is entirely voluntary. Reliance on their contents for any purpose by anyone is at his/her sole risk and Fasten.it s.r.l./www.fasten.it is not responsible for any loss, claim or damage arising there from.

Standard ASME B18.21.1 TABLE 4

Helical spring-lock washers, High Collar

Dimensions in inches: source ASME B18.21.1 -2009- Table 4 High Collar
Nominal washer size	A max	A min	B max	T mean section thickness (t1+t)/2	W min
No.4 (0.112)	0.120	0.114	0.173	0.022	0.022
No.5 (0.125)	0.133	0.127	0.202	0.030	0.030
No.6 (0.138)	0.148	0.141	0.216	0.030	0.030
No.8 (0.164)
No.10 (0.190)
1/4 - (0.250)
5/16 - (0.3125)
3/8 - (0.375)
7/16 -(0.4375)
1/2 - (0.5)
5/8 - (0.625)
3/4 - (0.75)
7/8 - (0.875)
1 - (1)
1-1/8 (1.125)
1- 1/4 (1.25)
1 - 3/8 (1.375)
1 - 1/2 (1.5)
1 - 3/4 (1.75)
2 - (2)
2 - 1/4 (2.5)
2 - 1/2 (2.5)
2 - 3/4 (2.75)
3 - (3)

The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from IFI – Industrial Fastener Institute, 6363 Oak Tree Blvd Independence, OH 44131, USA.
WARNING - The datasheets provided by this site (fasten.it) are only advisory in support of the commercial activity and their use by anyone is entirely voluntary. Reliance on their contents for any purpose by anyone is at his/her sole risk and Fasten.it s.r.l./www.fasten.it is not responsible for any loss, claim or damage arising there from.

Technical data for Helical spring-lock washers, inch sizes

This product is regulated by the following standards:

Standard ASME B18.21.1 TABLE 1

Standard ASME B18.21.1 TABLE 2

Standard ASME B18.21.1 TABLE 3

Standard ASME B18.21.1 TABLE 4

Helical spring-lock washers, inch sizes

Suppliers of Helical spring-lock washers, inch sizes

Manufacturer of spring lock washers and shakeproof washers. Metric and imperial sizes. Production of wire for spring and retaining rings.

Manufacturer of metal stampings and washers for the North American market

Distributor specialized in inch thread fasteners

Distributor of inch fasteners as per British and American standards

Manufacturer specialized in washers. Production of 200,000 washers/day. Flat, spring, toothed, square and wave washers, etc...

Manufacturer of special cold and hot forged nuts and bolts: Metric, UNF, UNC, BSF & BSW (Whitworth) threadforms

Manufacturer of standard washers and stamping parts

Manufacturer specialized in all kinds of Plain Washers, Spring and wire washers, Circlips, Copper washers, Aluminum washers, Star washers, Conical star washers, Serrated washers, Conical washers, Spherical washers.