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  Milwaukee 6378-4 (SER 621A) Worm Drive Circular Saw Parts
Milwaukee Worm Drive Circular Saw Replacement For Model 6378-4 (SER 621A)

Milwaukee Worm Drive Circular Saw Replacement Parts For Model 6378-4 (SER 621A)

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Popular Parts for Milwaukee 6378-4 (SER 621A)

Questions & Answers for Milwaukee 6378-4 (SER 621A)

Page A
Milwaukee 6378-4 (SER 621A) Worm Drive Circular Saw Page A Diagram
 Fig #
1
220 Volt Armature Obsolete - Not Available
 $162.45

Part Number:16-74-0171

Discontinued

Discontinued
 $162.45
Discontinued
2
8-16x2-1/2 Pan Plast Torx
 $3.99

Part Number:06-82-7375

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $3.99
Usually ships in 7 - 12 business days
 $3.99
3
220 Volt Field Obsolete - Not Available
 $74.28

Part Number:18-74-0141

Discontinued

Discontinued
 $74.28
Discontinued
4
Ball Bearing
 $4.99

Part Number:02-04-0850

In Stock

In Stock
 $4.99
In Stock
 $4.99
5
Brush Tube
 $3.99

Part Number:22-20-0360

In Stock

In Stock
 $3.99
In Stock
 $3.99
8
Motor Housing Assembly Obsolete - Not Available
 $50.40

Part Number:31-50-0226

Discontinued

Discontinued
 $50.40
Discontinued
9
8-32 Hex Nut
 $4.99

Part Number:06-55-0835

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $4.99
Usually ships in 7 - 12 business days
 $4.99
10
Switch Service Kit Obsolete - Not Available
 $17.60

Part Number:23-66-1817

Discontinued

Discontinued
 $17.60
Discontinued
11
8-16 X 3/8 Screw
 $4.99

Part Number:06-82-7251

In Stock

In Stock
 $4.99
In Stock
 $4.99
12
Lock Washer Obsolete - Not Available
 $2.99

Part Number:06-97-1800

Discontinued

Discontinued
 $2.99
Discontinued
13
Left Handle Half Obsolete - Not Available
 $9.10

Part Number:31-44-1106

Discontinued

Discontinued
 $9.10
Discontinued
14
8-32 X 1 Obsolete - Not Available
 $2.99

Part Number:06-82-2362

Discontinued

Discontinued
 $2.99
Discontinued
15
Brush Retaining Screw
 $18.23

Part Number:23-44-0140

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $18.23
Usually ships in 7 - 12 business days
 $18.23
16
Carbon Brush
 $17.96

Part Number:22-18-0730

In Stock

In Stock
 $17.96
In Stock
 $17.96
17
Brush Holder Assembly Obsolete - Not Available
 $4.99

Part Number:22-24-0286

Discontinued

Discontinued
 $4.99
Discontinued
18
Screw
 $4.99

Part Number:06-82-7270

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $4.99
Usually ships in 7 - 12 business days
 $4.99
29
Internal Retaining Ring
 $3.99

Part Number:34-80-2365

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $3.99
Usually ships in 7 - 12 business days
 $3.99
30
Ball Bearing
 $9.16

Part Number:02-04-1536

In Stock

In Stock
 $9.16
In Stock
 $9.16
31
Worm Spacer Obsolete - Not Available
 $9.42

Part Number:45-36-1010

Discontinued

Discontinued
 $9.42
Discontinued
32
Armature Seal
 $4.99

Part Number:45-06-0280

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $4.99
Usually ships in 7 - 12 business days
 $4.99
33
Lock Washer
 $3.99

Part Number:06-97-2200

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $3.99
Usually ships in 7 - 12 business days
 $3.99
34
10-24 Hex Nut
 $3.99

Part Number:06-55-1000

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $3.99
Usually ships in 7 - 12 business days
 $3.99
35
Gear Case Obsolete - Not Available
 $69.20

Part Number:28-14-1418

Discontinued

Discontinued
 $69.20
Discontinued
36
Top Handle Obsolete - Not Available
 $12.51

Part Number:31-44-0600

Discontinued

Discontinued
 $12.51
Discontinued
37
Taptite Torx Screw
 $4.99

Part Number:06-82-5320

In Stock

In Stock
 $4.99
In Stock
 $4.99
38
10-14 X 1 Pan Hd. Plastite T-
 $3.99

Part Number:06-82-7224

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $3.99
Usually ships in 7 - 12 business days
 $3.99
39
3/8-16 X 1/2" Washer HD. Hex Screw Obsolete - Not Available
 $3.02

Part Number:06-95-5690

Discontinued

Discontinued
 $3.02
Discontinued
40
Washer Obsolete - Not Available
 $2.99

Part Number:45-88-7475

Discontinued

Discontinued
 $2.99
Discontinued
41
Worm
 $42.86

Part Number:32-91-0115

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $42.86
Usually ships in 7 - 12 business days
 $42.86
42
Spacer
 $3.99

Part Number:45-36-1020

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $3.99
Usually ships in 7 - 12 business days
 $3.99
43
Ball Bearing
 $8.89

Part Number:02-04-1050

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $8.89
Usually ships in 7 - 12 business days
 $8.89
44
Washer
 $3.99

Part Number:45-88-0601

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $3.99
Usually ships in 7 - 12 business days
 $3.99
45
Hex Nut Locking 5/16-18 Obsolete - Not Available
 $2.99

Part Number:06-57-5050

Discontinued

Discontinued
 $2.99
Discontinued
46
Gasket Obsolete - Not Available
 $3.99

Part Number:43-44-0240

Discontinued

Discontinued
 $3.99
Discontinued
47
Hood Obsolete - Not Available
 $8.80

Part Number:31-15-0115

Discontinued

Discontinued
 $8.80
Discontinued
48
Taptite Torx Screw
 $4.99

Part Number:06-82-5320

In Stock

In Stock
 $4.99
In Stock
 $4.99
49
Bumper
 $4.99

Part Number:42-38-0222

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $4.99
Usually ships in 7 - 12 business days
 $4.99
50
Locking Collar Obsolete - Not Available
 $6.26

Part Number:42-76-0470

Discontinued

Discontinued
 $6.26
Discontinued
52
8-32 X 1/2 Pan Hd. Sit. Tapti
 $4.99

Part Number:06-82-5316

In Stock

In Stock
 $4.99
In Stock
 $4.99
58
Needle Bearing
 $5.19

Part Number:02-50-2423

In Stock

In Stock
 $5.19
In Stock
 $5.19
59
Worm Gear Obsolete - Not Available
 $23.63

Part Number:32-90-0107

Discontinued

Discontinued
 $23.63
Discontinued
61
Spindle Obsolete - Not Available
 $35.39

Part Number:38-50-5191

Discontinued

Discontinued
 $35.39
Discontinued
62
Spindle Seal Obsolete - Not Available
 $5.41

Part Number:45-06-0260

Discontinued

Discontinued
 $5.41
Discontinued
63
Internal Retaining Ring
 $4.99

Part Number:34-80-2960

In Stock

In Stock
 $4.99
In Stock
 $4.99
64
Ball Bearing Obsolete - Not Available
 $7.04

Part Number:02-04-1748

Discontinued

Discontinued
 $7.04
Discontinued
65
Guard Hub
 $24.32

Part Number:28-53-0270

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $24.32
Usually ships in 7 - 12 business days
 $24.32
66
O-Ring Obsolete - Not Available
 $3.99

Part Number:34-40-2120

Discontinued

Discontinued
 $3.99
Discontinued
68
Retaining Ring
 $3.99

Part Number:34-60-2150

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $3.99
Usually ships in 7 - 12 business days
 $3.99
74
3/8-24 L.H. Blade Screw Obsolete - Not Available
 $29.03

Part Number:06-75-0478

Discontinued

Discontinued
 $29.03
Discontinued
75
Stud Obsolete - Not Available
 $2.99

Part Number:06-92-2520

Discontinued

Discontinued
 $2.99
Discontinued
76
Cord Set Obsolete - Not Available
 $28.91

Part Number:22-64-0850

Discontinued

Discontinued
 $28.91
Discontinued
78
Cord Protector
 $5.19

Part Number:44-76-0170

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $5.19
Usually ships in 7 - 12 business days
 $5.19
79
Fan Obsolete - Not Available
 $6.05

Part Number:22-84-0700

Discontinued

Discontinued
 $6.05
Discontinued
81
O-ring
 $4.99

Part Number:34-40-1550

In Stock

In Stock
 $4.99
In Stock
 $4.99
82
O-ring
 $3.99

Part Number:34-40-0226

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $3.99
Usually ships in 7 - 12 business days
 $3.99
83
Washer Obsolete - Not Available
 $2.99

Part Number:45-88-0610

Discontinued

Discontinued
 $2.99
Discontinued
84
Spring Obsolete - Not Available
 $2.99

Part Number:40-50-8325

Discontinued

Discontinued
 $2.99
Discontinued
85
Lockshaft Obsolete - Not Available
 $2.99

Part Number:45-08-0300

Discontinued

Discontinued
 $2.99
Discontinued
86
Shift Shaft Retaining Ring
 $3.99

Part Number:34-60-0525

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $3.99
Usually ships in 7 - 12 business days
 $3.99
87
Spindle Lock Nut Obsolete - Not Available
 $5.63

Part Number:44-40-0650

Discontinued

Discontinued
 $5.63
Discontinued
88
Washer Obsolete - Not Available
 $2.99

Part Number:45-88-7476

Discontinued

Discontinued
 $2.99
Discontinued
 Fig #
Circular Saw Parts  Saw Parts

Repair Guides for Milwaukee Worm Drive Circular Saw 6378-4 (SER 621A)

Power Tool Care and Maintenance 101

This article suggests guidelines for power tool care and maintenance. It also describes information tools available at eReplacementParts.com.

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When the guard on your saw stops working properly you will have to replace it. This video guides you through the simple steps needed to replace your saw's guard.

Questions & Answers for Milwaukee 6378-4 (SER 621A)

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