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Flat washers feature a hole in the center matching the bolt they're used with. Locking washers, equipped with recessed features, prevent loosening. Some types include split lock washers, which use compression to prevent loosening; wave washers with a wavy surface for grip; and spring washers, which absorb vibration and shock. SAE/USS washers are designed for SAE (US) or USS (UK and others) fasteners. Finally, machine screw washers pair with machine screws to fasten metal pieces together.
Item # |
Item Name |
Brand |
Measurement |
Material |
Inside Diameter |
Outside Diameter |
|---|---|---|---|---|---|---|
| A378-230-5 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Brass | N/A 8-Mar | N/A 5/8 |
| A378-230-63 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Brass | N/A 8-Mar | N/A 5/8 |
| A378-230-90 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Brass | N/A 8-Mar | N/A 5/8 |
| A379-303-32 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Aluminum | N/A 8-Mar | N/A 5/8 |
| A379-303-63 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Aluminum | N/A 8-Mar | N/A 5/8 |
| A379-303-16 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Aluminum | N/A 8-Mar | N/A 5/8 |
| A379-303-20 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Aluminum | N/A 8-Mar | N/A 5/8 |
| A378-230-125 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Brass | N/A 8-Mar | N/A 5/8 |
| A379-303-5 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Aluminum | N/A 8-Mar | N/A 5/8 |
| A378-230-20 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Brass | N/A 8-Mar | N/A 5/8 |
| A378-230-2 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Brass | N/A 8-Mar | N/A 5/8 |
| A379-303-10 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Aluminum | N/A 8-Mar | N/A 5/8 |
| A378-230-16 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Brass | N/A 8-Mar | N/A 5/8 |
| A370-877-24 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Stainless | N/A 8-Mar | N/A 5/8 |
| A370-877-3 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Stainless | N/A 8-Mar | N/A 5/8 |
| A370-877-4 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Stainless | N/A 8-Mar | N/A 5/8 |
| A370-877-30 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Stainless | N/A 8-Mar | N/A 5/8 |
| A370-877-2 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Stainless | N/A 8-Mar | N/A 5/8 |
| A370-877-1 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Stainless | N/A 8-Mar | N/A 5/8 |
| A370-877-90 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Stainless | N/A 8-Mar | N/A 5/8 |
| A370-877-8 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Stainless | N/A 8-Mar | N/A 5/8 |
| A370-877-20 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Stainless | N/A 8-Mar | N/A 5/8 |
| A370-877-15 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Stainless | N/A 8-Mar | N/A 5/8 |
| A370-877-5 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Stainless | N/A 8-Mar | N/A 5/8 |
| A370-877-7 | N/A Washers - Flat, Locking, SAE/USS, Machine Screw and More | N/A Seastrom | N/A Unified | N/A Stainless | N/A 8-Mar | N/A 5/8 |
