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Product Specifications:
| Item | Flat Washer |
| Dimensional Standards | ASME B18.22.1 |
| Finish | Plain |
| Fits Bolt Size | #12 |
| Flat Washer Type | SAE |
| For Screw Size | #12 |
| Grade | Grade 316 |
| Hardness | Rockwell B80 |
| Inside Dia. | 1/4" |
| Inside Dia. Tolerance | -0.01" to +0.01" |
| Material | Stainless Steel |
| Material Grade/class | 316 |
| Material Quality Standards | Astm A276 |
| Max. Thickness | 2/25" |
| Min. Thickness | 0.051" |
| Outside Dia. | 9/16" |
| Outside Dia. Tolerance | -0.01" to +0.01" |
| Resistance Properties | Chemical Resistant, Corrosion Resistant, Saltwater Resistant |
| Rockwell Hardness | B83 |
| System Of Measurement | Imperial |
| Tensile Strength | 75000 psi |
| Thickness | 0.051" to 0.08" |
| Thickness Tolerance | -0.014", +0.005" |
| Washer Type | SAE Washer |
Shipping Info:
| Ship weight (kg) | 0.04 |
| Ship height (cm) | 0.51 |
| Ship length (cm) | 7.62 |
| Ship width (cm) | 2.54 |
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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U55205.025.0001 | 1/4" | 0.065" | - | - | - | -0.014" to +0.015" | - | - | 50 | €4.92 | |
![]() |
U55205.031.0001 | 5/16" | 0.065" | 0.051" | 2/25" | 5/16" | -0.014" to +0.015" | -0.005" to +0.015" | -0.007" to +0.015" | 50 | €6.63 | |
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U55205.037.0001 | 3/8" | 0.065" | 0.051" | 2/25" | 3/8" | -0.014" to +0.015" | -0.005" to +0.015" | -0.007" to +0.015" | 50 | €6.93 | |
![]() |
U55205.050.0001 | 1/2" | 0.098" | 0.074" | 0.121" | 1/2" | -0.021" to +0.026" | -0.005" to +0.015" | -0.007" to +0.030" | 25 | €14.13 | |
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U55205.062.0001 | 5/8" | 0.095" | 0.074" | 0.121" | 5/8" | +0.026", -0.021" | -0.007" to +0.03" | -0.007" to +0.030" | 25 | €21.67 | |
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U55205.043.0001 | 7/16" | 0.065" | 0.051" | 2/25" | 7/16" | +0.015", -0.014" | -0.005" to +0.015" | -0.007" to +0.015" | 25 | €5.36 | |
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U55205.075.0001 | 3/4" | 0.134" | 0.108" | 4/25" | 3/4" | -0.026" to +0.026" | -0.007" to +0.03" | -0.007" to +0.030" | 20 | €18.57 |
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APPROVED VENDOR WAS405#12 Flat Washer, 12 Fits Bolt Size, SAE, 1/4 In I.D., 9/16 In O.D., Plain
€31.05 /pack







