Description
Overview:
This insulated washer is a Genuine Makita part for maintaining safe electrical isolation in high‐speed power tools. Made from a durable, non‐conductive composite, it sits between mating components to prevent electrical transfer and reduce wear caused by vibration and heat. It is a direct replacement for Makita Manufacturer Part Number 681644-1 and is engineered for an accurate fit on a wide range of Makita machines, including the 9015B and 9016B angle grinders. The flat, ring‐shaped design supports smooth assembly and reliable clamping around the spindle or mounting hardware. Using the correct Makita washer helps protect internal components, supports consistent tool operation, and restores original build quality after maintenance or repair.
Key Features:
- Genuine Makita replacement part (MPN 681644-1) for assured fit and function
- Non‐conductive insulating material helps prevent short circuits and arcing
- Precise dimensions for correct spacing and clamping pressure
- Helps reduce vibration transfer and component wear at the mounting point
- Robust construction suitable for the speeds and loads of professional tools
- Simple, like‐for‐like swap with the original washer during routine servicing
- Compatible with a broad range of Makita grinders, saws, sanders, blowers and more
- Supports long service life when installed with clean, undamaged mating parts
Typical Applications:
Used around the spindle, arbor, or mounting stack to electrically isolate and correctly space components in angle grinders, reciprocating saws, mitre saws, sanders, blowers, polishers, chainsaws and mixers. Ideal when refurbishing tools, replacing worn or heat‐affected washers, or resolving intermittent electrical faults linked to poor insulation at the mounting interface.
Also known as:
Insulation washer, insulator washer, isolation washer, non‐conductive spacer, electrical barrier washer, spindle insulator, arbor insulator, grinder spacer washer.
Fits Models:
3520A/2, 3520A2, 9015B, 9016B, 9227CB, 9237CB, BO4900, BO4900V, BO6030, GA501, GA5020, GA5021, JR3030T, JR3050T, JR3060T, LS0714, LS0714FL, LS0714L, M6600, UB1101, UB1101/1, UB11011, UB1103, UC3520A, UC3520A/2, UC4020A, UC4020A/2
Alternate Part Numbers:
6816441
Product Specifications
| L&S Part No. | 681644-1 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Makita |
| OEM No. | 681644-1 |
| Unit of Sale | 1 |
| Applications | 3520A/2, 3520A2, 9015B, 9016B, 9227CB, 9237CB, BO4900, BO4900V, BO6030, GA501, GA5020, GA5021, JR3030T, JR3050T, JR3060T, LS0714, LS0714FL, LS0714L, M6600, UB1101, UB1101/1, UB11011, UB1103, UC3520A, UC3520A/2, UC4020A, UC4020A/2 |
| Machine Type | Angle Grinder |
| Fits Brands | Makita |
| Fits Models | UC3520A | UC3520A/2 | UC4020A | UC4020A/2 | UB1101 | UB1101/1 | 9015B | 9016B | GA5021 | LS0714 | LS0714FL | LS0714L | JR3030T | JR3050T | JR3060T | M6600 | 9227CB | 9237CB | BO4900 | BO4900V | BO6030 | UB1103 |
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