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Product Description
Part Number: 31UNT2Z
Diameter: 5/16"
Grade: Low Carbon
Finish: Zinc Clear
Inside Diameter : 3/8" (Min 0.370", Max 0.390)
Outside Diameter: 7/8" (Min 0.868", Max 0.905")
Thickness : 0.064" - 0.104"
BoltsandNuts.com
5/16" USS Low Carbon Flat Washers Zinc
Product Description
Part Number: 31UNT2Z
Diameter: 5/16"
Grade: Low Carbon
Finish: Zinc Clear
Inside Diameter : 3/8" (Min 0.370", Max 0.390)
Outside Diameter: 7/8" (Min 0.868", Max 0.905")
Thickness : 0.064" - 0.104"
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| Grade | Low Carbon |
| Specifications Met | ASME B18.22.1 |
| Thickness | 0.083" nom |
| System | Inch |
| Material | Low carbon steel |
| Pattern | USS (Wide) series |
| Outside Diameter | 0.875" nom |
| Finish | Zinc Clear |
| Diameter | 5/16" |
| Inside Diameter | 0.375" nom |
Technical Drawing
Not to scale · ASME B18.22.1 · See table for exact dimensions
Technical Dimensions
| Outside Diameter | 0.875" nom |
| Inside Diameter | 0.375" nom |
| Thickness | 0.083" nom |
| Fits Bolt Size | 5/16" |
| Series | USS (Wide) series |
| Material | Low carbon steel |
Flat round washer that spreads bolt and nut bearing load over a wider area, protecting the joint material and reducing pull-through or marring.
Dimensions conform to ASME B18.22.1 and may vary within specified manufacturing tolerances.
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