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Standard Washers
Standard washers are essential components used with fasteners like bolts and nuts. Their primary function is to distribute the load of the fastener, prevent damage to the surface being fastened, and reduce the risk of loosening due to vibrations.
- Flat, round disc design with a central hole
- Used to distribute the load of a threaded fastener
- Prevents damage to surfaces by providing a smooth bearing surface
- Reduces the risk of loosening due to vibrations
- Available in various materials like steel, stainless steel, brass, and plastic
- Commonly used in automotive, machinery, and household applications
Standard Washers Specification Table:
| Material | Inner Diameter (ID) | Outer Diameter (OD) | Thickness |
|---|---|---|---|
| Steel | 1/4" | 5/8" | 1/16" |
| Stainless Steel | 3/8" | 7/8" | 1/8" |
| Brass | 1/2" | 1" | 3/32" |
| Nylon | 3/4" | 1 1/4" | 1/16" |
Standard Washers Material Grade Table:
| Material | Grade | Properties |
|---|---|---|
| Steel | Grade 2 | Low carbon steel, general purpose |
| Steel | Grade 5 | Medium carbon steel, quenched and tempered |
| Steel | Grade 8 | Medium carbon alloy steel, quenched and tempered |
| Stainless Steel | 304 | Excellent corrosion resistance, good formability |
| Stainless Steel | 316 | Superior corrosion resistance, especially in marine environments |
| Brass | Yellow Brass | Good corrosion resistance, good electrical conductivity |
| Nylon | N/A | Lightweight, good chemical resistance, non-conductive |
Standard Washers Dimensions Chart:
| Bolt Size | A | B | C | Weight (lbs.) Per 100 Pieces | Part numbers | |
|---|---|---|---|---|---|---|
| Inside Diameter | Outside Diameter | Thickness | Import | |||
| Plain | Galvanized | |||||
| 1⁄2 | 9⁄16 | 13⁄8 | 0.109 | 4 | 19794 | 19795 |
| 5⁄8 | 11⁄16 | 13⁄4 | 0.134 | 8 | 19796 | 19797 |
| 3⁄4 | 13⁄16 | 2 | 0.148 | 11 | 19798 | 19799 |
| 7⁄8 | 15⁄16 | 21⁄4 | 0.165 | 15 | 19800 | 19801 |
| 1 | 11⁄16 | 21⁄2 | 0.165 | 19 | 19802 | 19803 |
| 11⁄8 | 11⁄4 | 23⁄4 | 0.165 | 22 | 19804 | 19805 |
| 11⁄4 | 13⁄8 | 3 | 0.165 | 26 | 19806 | 19807 |
| 13⁄8 | 11⁄2 | 31⁄4 | 0.180 | 33 | 19808 | 19809 |
| 11⁄2 | 15⁄8 | 31⁄2 | 0.180 | 38 | 19810 | 19811 |
| 15⁄8 | 13⁄4 | 33⁄4 | 0.180 | 43 | - | - |
| 13⁄4 | 17⁄8 | 4 | 0.180 | 50 | 19812 | 19813 |
| 17⁄8 | 2 | 41⁄4 | 0.180 | 57 | - | - |
| 2 | 21⁄8 | 41⁄2 | 0.180 | 63 | 19814 | 19815 |
| 21⁄4 | 23⁄8 | 43⁄4 | 0.220 | 83 | 16434 | 16435 |
| 21⁄2 | 25⁄8 | 5 | 0.238 | 96 | 16436 | 16437 |
| 23⁄4 | 27⁄8 | 51⁄4 | 0.259 | 110 | 16670 | 16671 |
| 3 | 31⁄8 | 51⁄2 | 0.284 | 130 | 16438 | 16439 |
Standard Washer Applications:
Standard washers are crucial components in many fastening applications, providing a smooth bearing surface to distribute the load of a threaded fastener and prevent damage to the surface being fastened. They play a vital role in enhancing the longevity and reliability of assemblies.
- Preventing wear and tear on assembly surfaces
- Evenly distributing the load of fasteners
- Providing a smooth bearing surface for nuts and bolts
- Reducing the risk of loosening due to vibration
- Acting as spacers in various mechanical setups
- Used in automotive, machinery, and household applications