Repair Forum Repair Center Blog

Call us toll free 866-802-6383

(9:00AM-8:00PM Mon-Fri, ET)

Appliance Parts

Exercise Equipment Parts

GPS Parts

Grill Parts

HVAC Parts

Home Office Parts

Lawn Equipment Parts

Motorsport Parts

Outdoor Recreation Parts

Plumbing Parts

Pool and Spa Parts

Power Tool Parts

Restaurant Equipment Parts

Vacuum Parts

Milwaukee 0420-1 (SER 851B) 12V Pistol Hammer Drill Parts

Page A

Download Diagram

Fig #	Part #	Img	Part Name	Availability	Price	Qty
1	06-82-9207		6-19 X .708 Pan HD. PT Screw T-10	Ships in 7 - 12 business days	$0.66
2	31-44-1885		Right Handle Half Obsolete - Not Available	Discontinued	$0.00	N/A
3	23-66-2300		Variable Speed Switch Obsolete - Not Available	Discontinued	$0.00	N/A
4	31-50-1080		Motor Housing Obsolete - Not Available	Discontinued	$0.00	N/A
5	45-36-1260		Gear Spacer	Ships in 7 - 12 business days	$0.66
6	12-20-1155		Service Nameplate Kit Obsolete - Not Available	Discontinued	$0.00	N/A
7	22-20-0860		Brush Tube	Ships in 7 - 12 business days	$0.66
8	22-18-0840		Brush Assembly - Top Obsolete - Not Available	Discontinued	$0.00	N/A
9	40-50-8840		Brush Spring	Ships in 7 - 12 business days	$0.66
8A	22-18-0845		Brush Assembly-Bottom Obsolete - Not Available	Discontinued	$0.00	N/A
10	31-44-1880		Left Handle Half Obsolete - Not Available	Discontinued	$0.00	N/A
11	18-01-0010		Field Assy	Ships in 7 - 12 business days	$46.42
12	16-01-1010		Service Armature Assy Obsolete - Not Available	Discontinued	$0.00	N/A
13	22-84-0830		Fan Assembly	Ships in 7 - 12 business days	$1.76
14	06-82-7261		6-19 X 11/16" Pan HD. Sit. Plastite T-15	Ships in 7 - 12 business days	$0.66
Fig #	Part #	Img	Part Name	Availability	Price
15	02-04-0848		Ball Bearing	Ships in 7 - 12 business days	$2.64
16	45-88-0355		Fiber Washer Obsolete - Not Available	Discontinued	$0.00	N/A
17	14-13-0540		Diaphragm Assy.	Ships in 7 - 12 business days	$13.75
18	06-42-0400		Woodruff Key	Ships in 7 - 12 business days	$0.61
19	02-50-1611		.25X.43X.31 FC Opn	Ships in 7 - 12 business days	$5.06
20	06-65-0880		Ground Pin	Ships in 7 - 12 business days	$0.88
21	02-50-1640		Needle Bearing	Ships in 7 - 12 business days	$1.98
22	43-44-0900		Gasket	Ships in 7 - 12 business days	$0.66
23	45-88-7721		Thrust Washer - Heat Treated	In stock 1 available	$0.66
24	32-40-2260		Intermediate Gear Obsolete - Not Available	Discontinued	$0.00	N/A
25	36-66-4360		Interm. Pinion Shaft	Ships in 7 - 12 business days	$24.09
26	32-75-3175		Spindle Gear	Ships in 7 - 12 business days	$11.88
27	45-88-0940		Over Lap Wave Washer	Ships in 7 - 12 business days	$0.83
28	28-14-2105		Gear Case	In stock 1 available	$26.79
29	02-04-0640		Ball Bearing	Ships in 7 - 12 business days	$3.74
Fig #	Part #	Img	Part Name	Availability	Price
30	02-02-0180		3/16" Steel Ball	Ships in 7 - 12 business days	$0.66
31	44-84-0240		Fixed Ratchet	Ships in 7 - 12 business days	$6.44
32	45-36-1225		Bearing Spacer	Ships in 7 - 12 business days	$1.60
33	44-84-0235		Rotating Ratchet	Ships in 7 - 12 business days	$8.53
34	45-36-1215		Shift Spacer	Ships in 7 - 12 business days	$6.71
35	02-02-0120		1/8" Steel Ball (Sold Individually)	Ships in 7 - 12 business days	$0.66
36	45-88-0935		Thrust Washer	Ships in 7 - 12 business days	$1.32
37	34-60-0920		Ball BRG. Retaining Ring	In stock 1 available	$0.66
38	02-08-0510		Ball Bearing	Ships in 7 - 12 business days	$8.75
39	40-50-0220		Compression Spring	Ships in 7 - 12 business days	$0.66
40	38-50-5515		Spindle	Ships in 7 - 12 business days	$26.51
41	34-80-2020		Retaining Ring	Ships in 7 - 12 business days	$0.66
42	34-40-4040		O - Ring	Ships in 7 - 12 business days	$0.66
43	31-58-0055		Locking Collar	Ships in 7 - 12 business days	$1.87
44	34-40-1500		O-Ring	Ships in 7 - 12 business days	$0.66
Fig #	Part #	Img	Part Name	Availability	Price
45	34-60-2125		Retaining Ring	Ships in 7 - 12 business days	$0.83
46	45-12-0520		Dust Shield Obsolete - Not Available	Discontinued	$0.00	N/A
47	48-66-0400		3/8" Chuck	Ships in 7 - 12 business days	$39.49
48	45-04-0755		Chuck Screw	Ships in 7 - 12 business days	$0.66
49	43-62-0905		Side Handle	Ships in 7 - 12 business days	$3.14
50	45-36-1255		Flange Spacer	Ships in 7 - 12 business days	$0.66
51	06-82-7393		7 -18X 2" Pan HD. Screw T-20	Ships in 7 - 12 business days	$0.66
52	02-04-5130		Ball Bearing	Ships in 7 - 12 business days	$3.08
53	48-11-0200		12.0 Volt Battery Obsolete - Not Available	Discontinued	$0.00	N/A
54	22-32-0400		Brush Spring Clip	Ships in 7 - 12 business days	$0.66
55	44-66-6140		Mounting Plate Obsolete - Not Available	Discontinued	$0.00	N/A
56	45-88-5615		Wave Spring Washer	Ships in 7 - 12 business days	$0.66
800	10-15-9485		Warning Label Obsolete - Not Available	Discontinued	$0.00	N/A

Drill Parts

Cordless Drill Parts

Drill Parts

Discuss

Repair Videos

Articles

Popular Parts

1/8" Steel Ball (Sold Individually) $0.66	Woodruff Key $0.61
Needle Bearing $1.98	Ball Bearing $3.74
Ball Bearing $2.64	Brush Spring $0.66
6-19 X 11/16" Pan HD. Sit. Plastite T-15 $0.66	Brush Spring Clip $0.66

Repair Videos

How to Remove a Drill Chuck

How to Remove a Stuck Drill Chuck

How to Hot-Wire Test a Cordless Drill Motor

Repair Articles

How to Remove a Stuck Drill Chuck
Broken gearboxes and sticky chuck screws can make removing a drill chuck difficult. This article explains the tricks you need to overcome these common repair setbacks.

Drilling, Fastening, and Hammering Power Tools
This article lists the major categories of drilling, fastening, and hammering tools, and explains the basic applications, types, and features of each.

How to Hot-Wire Test a Cordless Drill Motor
This article explains how to hot-wire test a cordless drill motor with step-by-step instructions and a demonstration video.

Cordless Drills 101
This article explains the types, features, and terms necessary for purchasing a cordless power drill. It also describes types of drill batteries and offers a purchasing guide.