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Product Specifications:
| Item | Flat Washer |
| Finish | Plain |
| Fits Bolt Size | M20 |
| Flat Washer Type | Standard |
| For Screw Size | M20 |
| Grade | Grade 18-8 |
| Hardness | Rockwell B80 |
| Inside Dia. | 21 mm |
| Inside Dia. Tolerance | -0.01" to +0.01" |
| Material | Stainless Steel |
| Material Grade/class | 18-8 |
| Material Quality Standards | Astm A582 |
| Max. Thickness | 3.5 mm |
| Min. Thickness | 3.5 mm |
| Outside Dia. | 35 mm |
| Outside Dia. Tolerance | -0.01" to +0.01" |
| Resistance Properties | Chemical Resistant, Corrosion Resistant |
| Rockwell Hardness | B83 |
| System Of Measurement | Metric |
| Tensile Strength | 90000 psi |
| Thickness | 3.5 mm |
| Thickness Tolerance | -0.5 mm to +0.4 mm |
| Washer Type | Standard Washer |
Shipping Info:
| Ship weight (kg) | 0.07 |
| Ship height (cm) | 1.02 |
| Ship length (cm) | 7.62 |
| Ship width (cm) | 3.3 |
| HS code | 7318220000 |
| Country of Origin | US |
Product Variants
| Product | Model | Fits Bolt Size | Thickness | Min. Thickness | Max. Thickness | For Screw Size | Thickness Tolerance | Inside Dia. Tolerance | Outside Dia. Tolerance | Pkg. Qty. | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
U51410.011.0002 | #4 | 1/32" | 0.031" | 0.031" | #4 | - | - | - | 50 | €5.25 | |
![]() |
U51410.013.0001 | #6 | 2/41" | 0.036" | 0.065" | #6 | +0.016", -0.013" | -0.005" to +0.008" | -0.005" to +0.015" | 50 | €2.14 | |
![]() |
U51410.016.0002 | #8 | 2/41" | - | - | - | - | - | - | 50 | €2.42 | |
![]() |
U51410.019.0002 | #10 | 2/41" | 0.036" | 0.065" | #10 | +0.016", -0.013" | -0.005" to +0.008" | -0.005" to +0.015" | 50 | €10.46 | |
![]() |
U51410.043.0001 | 7/16" | 0.047" | 0.034" | 0.063" | 7/16" | +0.016", -0.013" | -0.005" to +0.015" | -0.007" to +0.015" | 25 | €3.55 | |
![]() |
U51410.025.0005 | 1/4" | 0.047" | 0.034" | 0.047" | 1/4" | +0.016", -0.013" | -0.005" to +0.015" | -0.007" to +0.015" | 50 | €5.26 | |
![]() |
U51410.031.0008 | 5/16" | 0.063" | 0.049" | 0.078" | 5/16" | +0.015", -0.014" | -0.005" to +0.015" | -0.007" to +0.015" | 50 | €8.58 |
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APPROVED VENDOR Z8820SS Flat Washer, M20 Fits Bolt Size, Std, 21 mm I.D., 35 mm O.D.
€22.61 /pack







