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Product Specifications:
| Item | Structural Washer |
| Dimensional Standards | En 14399-6 |
| Finish | Hot Dip Galvanized |
| Fits Bolt Sizes | M20 |
| Flat Washer Type | Standard |
| For Screw Size | M20 |
| Grade | Grade 2 |
| Inside Dia. | 21 mm |
| Material | Steel |
| Material Grade/class | Grade 300HV |
| Maximum Thickness | 4" |
| Minimum Thickness | 4" |
| Outside Dia. | 37 mm |
| System Of Measurement | Metric |
| Thickness | 4 mm |
| Type | Standard |
Shipping Info:
| Ship weight (kg) | 3.89 |
| Ship height (cm) | 7.62 |
| Ship length (cm) | 38.1 |
| Ship width (cm) | 17.78 |
Product Variants
| Model | Fits Bolt Sizes | Grade | Inside Dia. | Outside Dia. | Thickness Tolerance | Hardness | Material | Finish | Pkg. Qty. | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M04237.120.0001 | M12 | Grade 2 | 13 mm | 24 mm | - | - | Steel | Hot Dip Galvanized | 400 | €159.88 | |
| FWI5050GUSA-050BX | 1/2" | - | 17/32" | 1 1/16" | 0.097" to 0.177" | Rockwell C26-C45 | Steel | Hot Dip Galvanized | 50 | €17.22 | |
| M04237.160.0001 | M16 | Grade 2 | 17 mm | 30 mm | - | - | Steel | Hot Dip Galvanized | 200 | €158.61 | |
| M04237.220.0001 | M22 | Grade 2 | 23 mm | 39 mm | - | - | Steel | Hot Dip Galvanized | 200 | €293.74 | |
| FWI5062GUSA-050BX | 5/8" | Non Graded | 0.172" | 1 5/16" | 0.122" to 0.177" | Rockwell C26-C45 | Steel | Hot Dip Galvanized | 50 | €28.27 | |
| M04237.300.0001 | M30 | Grade 2 | 31 mm | 56 mm | - | - | Steel | Hot Dip Galvanized | 100 | €545.13 | |
| FWI5100GUSA-010BX | 1" | Non Graded | 1 1/16" | 2" | 0.136" to 0.178" | Rockwell C26-C45 | Steel | Hot Dip Galvanized | 10 | €12.98 |
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GRAINGER M04237.200.0001 Structural Washer, Std, M20 Fits Bolt Size, 21 mm I.D., 37 mm O.D.
€210.37 /pack

