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Overview
Unified spring washers - Rectangular section
BS 1802
Materials and Finishes:
Steel/Zinc & clear
Stainless steel/Self colour
Note: Due to the fact that fastening applications differ greatly, the below information is for guidance only and is correct to the best of our knowledge. The customer must satisfy themselves with the performance of the fastener and validity of the data. TR Fastenings will not be held responsible for any failure that may occur from the use of this information.
Dimension data
| To suit d (thread size) | 7/8 UNF | 5/32 UNF | 3/16 UNF | 1/4 UNF | 5/16 UNF | 3/8 UNF | 7/16 UNF | 1/2 UNF | 9/16 UNF | 5/8 UNF | 3/4 UNF |
| 7/8 UNC | 5/32 UNC | 3/16 UNC | 1/4 UNC | 5/16 UNC | 3/8 UNC | 7/16 UNC | 1/2 UNC | 9/16 UNC | 5/8 UNC | 3/4 UNC | |
| D max | 0.237 | 0.300 | 0.387 | 0.465 | 0.600 | 0.694 | 0.789 | 0.851 | 1.009 | 1.072 | 1.276 |
| b max | 0.048 | 0.064 | 0.092 | 0.092 | 0.128 | 0.144 | 0.160 | 0.160 | 0.192 | 0.192 | 0.232 |
| s max | 0.032 | 0.032 | 0.048 | 0.064 | 0.064 | 0.064 | 0.064 | 0.092 | 0.092 | 0.128 | 0.128 |
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