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INDASCO washers distribute load evenly and protect surfaces from damage. Engineered for precision and strength, they ensure stability and durability in every fastening system.
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![Regular Helical Spring-Lock Washers [Table 1] (SAE J403, J411, J405, J404, ASTM B211, B159, B99, QQ-N-286) — Indasco product W-04-0006](https://indasco.com/wp-content/uploads/2026/09/W-04-0006-Th.jpg)
ASME B 18.21.1 (T1) - 2009 (R2016)
Regular Helical Spring-Lock Washers [Table 1] (SAE J403, J411, J405, J404, ASTM B211, B159, B99, QQ-N-286)
![Heavy Metric Helical Spring Lock Washers [Table 3] (SAE J403, J411, J404, J405, ASTM B211, B159, B99, QQ-N-286) — Indasco product W-04-0005](https://indasco.com/wp-content/uploads/2026/09/W-04-0005-Th.jpg)
ASME B 18.21.2M - 1999 (R2014)
Heavy Metric Helical Spring Lock Washers [Table 3] (SAE J403, J411, J404, J405, ASTM B211, B159, B99, QQ-N-286)
![Regular Metric Helical Spring Lock Washers [Table 2] (SAE J403, J411, J404, J405, ASTM B211, B159, B99, QQ-N-286) — Indasco product W-04-0004](https://indasco.com/wp-content/uploads/2026/09/W-04-0004-Th.jpg)
ASME B 18.21.2M - 1999 (R2014)
Regular Metric Helical Spring Lock Washers [Table 2] (SAE J403, J411, J404, J405, ASTM B211, B159, B99, QQ-N-286)
![High-collar Helical Spring Lock Washers [Table 4] (SAE J403, J411, J405, J404, ASTM B211, B159, B99, QQ-N-286) — Indasco product W-04-0003](https://indasco.com/wp-content/uploads/2026/09/W-04-0003-Th.jpg)
ASME B 18.21.1 (T4) - 2009 (R2016)
High-collar Helical Spring Lock Washers [Table 4] (SAE J403, J411, J405, J404, ASTM B211, B159, B99, QQ-N-286)
![Extra-Duty Helical Spring-Lock Washers [Table 3] (SAE J403, J411, J405, J404, ASTM B211, B159, B99, QQ-N-286) — Indasco product W-04-0002](https://indasco.com/wp-content/uploads/2026/09/W-04-0002-Th.jpg)
ASME B 18.21.1 (T3) - 2009 (R2016)
Extra-Duty Helical Spring-Lock Washers [Table 3] (SAE J403, J411, J405, J404, ASTM B211, B159, B99, QQ-N-286)
![Heavy Helical Spring-Lock Washers [Table 2] (SAE J403, J411, J405, J404, ASTM B211, B159, B99, QQ-N-286) — Indasco product W-04-0001](https://indasco.com/wp-content/uploads/2026/09/W-04-0001-Th.jpg)
ASME B 18.21.1 (T2) - 2009 (R2016)
Heavy Helical Spring-Lock Washers [Table 2] (SAE J403, J411, J405, J404, ASTM B211, B159, B99, QQ-N-286)
![Regular Helical Spring-Lock Washers [Table 1] (SAE J403, J411, J405, J404, ASTM B211, B159, B99, QQ-N-286) — Indasco product W-04-0006](https://indasco.com/wp-content/uploads/2026/09/W-04-0006-Th-150x150.jpg)
