Product Description
**Milwaukee parts change not only by model# but also by serial number. To look up your tools parts break down on Milwaukee's website please click here:
Milwaukee 1/4 Flat Washer
Model Number: 45-88-1515
The Milwaukee 45-88-1515 1/4 Flat Washer is a genuine OEM replacement part used across more than 11 different Milwaukee circular saw platforms, making it one of the most cross-compatible service parts in Milwaukee's catalog. Confirmed compatible models include the 0730-20 (serial codes A57A, A57B, A75C) and 0730-50 (A57A) M28 Cordless Circular Saws, the 0740-20 (A94A, A94B) M28 Cordless Circular Saw, the 2630-20 (B57A) M18 6-1/2 in. Cordless Circular Saw, the 6310-20 (057A) 7-1/4 in. Tilt-Lok Circular Saw, the 6320-20 and 6320-50 (383A) 7-1/4 in. Tilt-Lok Circular Saws, the 6390-20 (983A, 983B) 7-1/4 in. Tilt-Lok Circular Saws, and the 6391-21 (189A) 7-1/4 in. Circular Saw. The 1/4 flat washer is one of the small hardware components used throughout the saw assembly at various screw and fastener locations, providing the bearing surface that distributes clamping force and prevents the threaded fastener from biting into the underlying housing or component.
Although a flat washer may seem like a minor service component, missing, deformed, scored, or corroded washers can cause loosened fasteners, premature wear at the fastener interface, and in extreme cases, structural compromise of the saw assembly. The 45-88-1515 is a high-quantity wear part that Milwaukee specifies at multiple positions throughout the saw, so customers servicing a circular saw may need several to complete a full restoration depending on how many positions require replacement. Because Milwaukee Tool specifies replacement parts by both catalog number and serial number, always verify your tool's serial number against the official Milwaukee service parts diagram before ordering, since the 45-88-1515 fits over 11 different Milwaukee circular saw models and the exact application location varies by tool. Milwaukee also uses many different "1/4 Flat Washer" part numbers across their broader catalog (including the 45-88-7500 for 8955-series wet/dry vacuums, the 45-88-1495 for cordless caulk and adhesive guns, and the 45-88-0015 for the 6176-20 platform) which are NOT interchangeable with the 45-88-1515 despite the similar naming. Verify by serial number using Milwaukee's online parts lookup before ordering to confirm correct fitment.
Features
- Genuine Milwaukee OEM replacement, direct factory part for the 45-88-1515 reference
- Confirmed fitment across 11+ Milwaukee circular saw platforms
- Compatible models include 0730-20 (A57A/A57B/A75C), 0730-50 (A57A), 0740-20 (A94A/A94B), 2630-20 (B57A), 6310-20 (057A), 6320-20/6320-50 (383A), 6390-20 (983A/983B), and 6391-21 (189A)
- Covers M18, M28, and corded Milwaukee circular saw platforms
- Standard 1/4 flat washer for fastener bearing surface applications
- Distributes clamping force and prevents fastener bite-through on housings and components
- Manufactured to Milwaukee factory tolerances and material specifications
- Direct-fit replacement, no modification required for installation
- High-quantity service part, often replaced at multiple positions during a full saw restoration
- Restores correct fastener torque retention after washer wear, deformation, or loss
Specifications
- Manufacturer: Milwaukee Tool
- Part Number: 45-88-1515
- Official Description: Washer Flat 1/4
- Component Type: Standard Flat Washer for Fastener Bearing Surface
- Confirmed Compatible Models: 0730-20 (A57A, A57B, A75C), 0730-50 (A57A), 0740-20 (A94A, A94B), 2630-20 (B57A), 6310-20 (057A), 6320-20 (383A), 6320-50 (383A), 6390-20 (983A, 983B), 6391-21 (189A)
- Tool Category: Cordless and corded Milwaukee circular saws
- Quantity: Sold individually, 1 washer per order
- Part Type: OEM Service Replacement Part
Includes
- (1) Milwaukee 45-88-1515 1/4 Flat Washer
- Note: Milwaukee uses many different flat washer part numbers across their broader catalog. This part (45-88-1515) is specific to Milwaukee circular saws and is NOT interchangeable with the 45-88-7500 (wet/dry vacuums), 45-88-1495 (cordless caulk and adhesive guns), 45-88-0015 (6176-20 platform), or other 45-88-XXXX flat washers
- Note: Verify your tool's catalog number and serial number against the official Milwaukee parts diagram before ordering, and confirm the quantity of washers required at your service location
