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Product Specifications:
| Item | Flat Washer |
| Finish | Plain |
| Fits Bolt Sizes | M30 |
| Flat Washer Type | Standard |
| For Screw Size | M30 |
| Grade | Grade 18-8 |
| Hardness | Rockwell B80 |
| Inside Dia. | 31 mm |
| Inside Diameter Tolerance | -0.01" to +0.01" |
| Material | Stainless Steel |
| Material Grade/class | 18-8 |
| Material Quality Standards | Astm A582 |
| Maximum Thickness | 4 mm |
| Minimum Thickness | 4 mm |
| Outside Dia. | 44 mm |
| Outside Diameter Tolerance | -0.01" to +0.01" |
| Resistance Properties | Chemical Resistant, Corrosion Resistant |
| Rockwell Hardness | B83 |
| System Of Measurement | Metric |
| Tensile Strength | 90000 psi |
| Thickness | 4 mm |
| Thickness Tolerance | -0.5 mm to +0.4 mm |
| Washer Type | Standard Washer |
Shipping Info:
| Ship weight (kg) | 0.04 |
| Ship height (cm) | 1.02 |
| Ship length (cm) | 7.62 |
| Ship width (cm) | 4.57 |
| HS code | 7318220000 |
| Country of Origin | US |
Product Variants
| Product | Model | Fits Bolt Sizes | Inside Dia. | Outside Dia. | Thickness | Thickness Tolerance | Hardness | Tensile Strength | Resistance Properties | Pkg. Qty. | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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U51410.011.0002 | #4 | 1/8" | 5/16" | 1/32" | - | - | - | - | 50 | €5.63 | |
![]() |
U51410.013.0001 | #6 | 5/32" | 3/8" | 2/41" | +0.016", -0.013" | - | Not Applicable | Corrosion Resistant | 50 | €2.77 | |
![]() |
U51410.016.0002 | #8 | 3/16" | 7/16" | 2/41" | - | - | Not Applicable | - | 50 | €3.16 | |
![]() |
U51410.019.0002 | #10 | 7/32" | 1/2" | 2/41" | +0.016", -0.013" | - | Not Applicable | Corrosion Resistant | 50 | €10.56 | |
![]() |
U51410.043.0001 | 7/16" | 15/32" | 29/32" | 0.047" | +0.016", -0.013" | - | Not Applicable | Corrosion Resistant | 25 | €4.69 | |
![]() |
U51410.025.0005 | 1/4" | 0.313" | 3/4" | 0.047" | +0.016", -0.013" | - | Not Applicable | Corrosion Resistant | 50 | €6.93 | |
![]() |
U51410.031.0008 | 5/16" | 3/8" | 7/8" | 0.063" | +0.015", -0.014" | - | Not Applicable | Corrosion Resistant | 50 | €11.38 |
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APPROVED VENDOR Z8830SS Flat Washer, M30 Fits Bolt Size, Std, 31 mm I.D., 44 mm O.D.
€19.67 /pack







