Easy
15-30 minutes
The cupped washer attaches to the tri-arc blade with the use of the lock nut. This part is an OEM from Ryobi and Homelite to be used in brushcutters and trimmers. It is made of metal and helps to keep the cutting tool in place. A wrench will be needed if this part needs to be replaced. This washer is priced as an individual replacement part.
Cupped Washer 04409
OEM part for: Ryobi, Homelite
Part Number: 04409
$4.99
In Stock
Ships within 1 business day 
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Frequently Purchased Together ?
Compatibility
This part will fit the following 138 machines
Ryobi
BC30 (RY30004) 30cc Brushcutter View Diagrams & Manuals
BC30 (RY30004A) 30cc Brushcutter View Diagrams & Manuals
RY30060A 30cc Brushcutter View Diagrams & Manuals
RY30060B 30cc Brushcutter View Diagrams & Manuals
BC30 (RY30061A) 30cc Brushcutter View Diagrams & Manuals
RY30063 30cc Brushcutter View Diagrams & Manuals
BC30 (RY30160) 30cc Brushcutter View Diagrams & Manuals
RY30260 30cc Brushcutter View Diagrams & Manuals
RY30260B 30cc Brushcutter View Diagrams & Manuals
RY30564 30cc Brushcutter View Diagrams & Manuals
RY30570 30cc String Trimmer and Brushcutter View Diagrams & Manuals
RY70105 Straight Shaft Trimmer View Diagrams & Manuals
RY70105A Straight Shaft Trimmer View Diagrams & Manuals
RY70107 Straight Shaft Trimmer View Diagrams & Manuals
RY70107A Straight Shaft Trimmer View Diagrams & Manuals
RY30060 30cc Brushcutter View Diagrams & Manuals
RY26540 Brush Cutter View Diagrams & Manuals
RY26941 Brush Cutter View Diagrams & Manuals
RY15518 Edger Attachment View Diagrams & Manuals
RY15702 Brushcutter Attachment View Diagrams & Manuals
RY30963 30cc String Trimmer View Diagrams & Manuals
RY30562 30cc String Trimmer View Diagrams & Manuals
51992 (260000001) String Trimmer View Diagrams & Manuals
RY40030 Edger Attachment View Diagrams & Manuals
RY28060 26CC Brush Cutter View Diagrams & Manuals
RY28065 26CC Brushcutter View Diagrams & Manuals
RY28160 26CC Brushcutter View Diagrams & Manuals
RY28161 26CC Brushcutter View Diagrams & Manuals
RY254BC RY254BC 25.4CC Brushcutter View Diagrams & Manuals
RY30004 RY30004 30CC Brushcutter View Diagrams & Manuals
RY30004A RY30004A 30CC Brushcutter View Diagrams & Manuals
RY30061A RY30061A 30CC Brushcutter View Diagrams & Manuals
P2300 (090265001) 18 Volt Edger View Diagrams & Manuals
RYBRC77 (090109015) Expand-It Brush Cutter Attachment View Diagrams & Manuals
RY30063 (BC30) 30cc Brushcutter View Diagrams & Manuals
RY30160 30cc Brushcutter View Diagrams & Manuals
P2300 (107265001) 18 Volt Edger View Diagrams & Manuals
RY30060 (BC30) 30cc Brushcutter View Diagrams & Manuals
RYEDG11 (090410008) Expand-It Edger Attachment View Diagrams & Manuals
RY254BCVNM Ry254bcvnm 25.4cc Brush Cutter Mfg. No. 095333110 4-5-21 (Rev:02) View Diagrams & Manuals
RYBRC77VNM Rybrc77vnm Expand-It Brush Cutter Attachment Mfg. No. 095109101 8-10-21 (Rev:04) View Diagrams & Manuals
Homelite
B25S (UT-15182) Trimmer View Diagrams & Manuals
UT15198 (BC1600) Trimmer View Diagrams & Manuals
BC1725SBR (UT-15158-R) Trimmer View Diagrams & Manuals
BC1725SBR (UT-15203) Trimmer View Diagrams & Manuals
BC2500AZ (UT-15205) Trimmer View Diagrams & Manuals
UT15512 (BCA250) Trimmer View Diagrams & Manuals
EA250 (UT15513) Trimmer View Diagrams & Manuals
UT15204 (BC2500MR) Trimmer View Diagrams & Manuals
UT15159R (BC2500MR) Trimmer View Diagrams & Manuals
UT15200 (BC2500R) Trimmer View Diagrams & Manuals
BC3000 (UT-15099-R) Trimmer View Diagrams & Manuals
BC730SBR (UT-15113-R) Trimmer View Diagrams & Manuals
BC800 (UT-15184) Trimmer View Diagrams & Manuals
BC900 (UT-15166) Trimmer View Diagrams & Manuals
BC900 (UT-15172) Trimmer View Diagrams & Manuals
UT-70026 Trimmer View Diagrams & Manuals
UT20711 (D825CA) Trimmer View Diagrams & Manuals
D825CA (UT-20736) Trimmer View Diagrams & Manuals
UT15152 (D825SB) Trimmer View Diagrams & Manuals
UT15160 (D825SB) Trimmer View Diagrams & Manuals
UT15165 (D825SB) Trimmer View Diagrams & Manuals
UT15170 (D825SB) Trimmer View Diagrams & Manuals
D830SB (UT-15108) Trimmer View Diagrams & Manuals
D830SB (UT-15108-1) Trimmer View Diagrams & Manuals
D830SBA (UT-15115) Trimmer View Diagrams & Manuals
UT-20712 Expand-It 3 in 1 String Trimmer View Diagrams & Manuals
UT-20710 Expand-it Plus String Trimmer View Diagrams & Manuals
UT-20681 Expand-it String Trimmer View Diagrams & Manuals
UT-20681-A Expand-it String Trimmer View Diagrams & Manuals
UT-20735 Expand-it String Trimmer View Diagrams & Manuals
F2040 (UT-20791) String Trimmer View Diagrams & Manuals
F3040 (UT-15176) String Trimmer View Diagrams & Manuals
F3050 (UT-15179) String Trimmer View Diagrams & Manuals
UT15084B GSTBC String Trimmer View Diagrams & Manuals
UT15084C GSTBC String Trimmer View Diagrams & Manuals
HBC28 (UT-15096) String Trimmer View Diagrams & Manuals
HBC28 (UT-15097) String Trimmer View Diagrams & Manuals
UT-50500 Edger View Diagrams & Manuals
UT-50901 Edger View Diagrams & Manuals
UT-20581-E (ST285BC) String Trimmer View Diagrams & Manuals
UT-20615 (ST285BC) String Trimmer View Diagrams & Manuals
UT-15136 String Trimmer View Diagrams & Manuals
UT15151 (Versa Tool) Zip Start Trimmer View Diagrams & Manuals
UT15154 (Versa Tool) Zip Start Trimmer View Diagrams & Manuals
UT15157 (Versa Tool) Zip Start Trimmer View Diagrams & Manuals
UT20722 (Versa Tool) Zip Start Trimmer View Diagrams & Manuals
UT20723 (Versa Tool) Zip Start Trimmer View Diagrams & Manuals
UT15180 (K400) Zip Start Trimmer View Diagrams & Manuals
UT15181 (K400) Zip Start Trimmer View Diagrams & Manuals
UT15169 (Versa Tool) Zip Start Trimmer View Diagrams & Manuals
UT15518F Expand-It Edger Attachment View Diagrams & Manuals
UT15164 (Versa Tool) Trimmer View Diagrams & Manuals
UT70127 Straight Shaft Trimmer View Diagrams & Manuals
UT70127A Straight Shaft Trimmer View Diagrams & Manuals
UT70129 Straight Shaft Trimmer View Diagrams & Manuals
UT70129A Straight Shaft Trimmer View Diagrams & Manuals
UT70131 Straight Shaft Trimmer View Diagrams & Manuals
UT70131A Straight Shaft Trimmer View Diagrams & Manuals
UT15702B Expand-It Brush Cutter View Diagrams & Manuals
UT-15106-1 String Trimmer View Diagrams & Manuals
ST385BC (UT-15040-H) String Trimmer View Diagrams & Manuals
ST385BC (UT-15040-J) String Trimmer View Diagrams & Manuals
ST385BC (UT-15040-K) String Trimmer View Diagrams & Manuals
ST385i (UT-15173) String Trimmer View Diagrams & Manuals
UT-15133 String Trimmer View Diagrams & Manuals
UT-15089-B PBC3600 String Trimmer View Diagrams & Manuals
UT-15089-C PBC3600 String Trimmer View Diagrams & Manuals
UT-15089-D PBC3600 String Trimmer View Diagrams & Manuals
UT-15089-E PBC3600 String Trimmer View Diagrams & Manuals
UT-15089-R PBC3600 String Trimmer View Diagrams & Manuals
UT-15091-A PBC3600-B String Trimmer View Diagrams & Manuals
UT-15091-B PBC3600-B String Trimmer View Diagrams & Manuals
UT-15091-C PBC3600-B String Trimmer View Diagrams & Manuals
UT-15091-D PBC3600-B String Trimmer View Diagrams & Manuals
UT-15091-E PBC3600-B String Trimmer View Diagrams & Manuals
UT-15091-F PBC3600-B String Trimmer View Diagrams & Manuals
UT-15090-B PLT3400 String Trimmer View Diagrams & Manuals
UT-15090-C PLT3400 String Trimmer View Diagrams & Manuals
UT-15090-D PLT3400 String Trimmer View Diagrams & Manuals
UT-15090-E PLT3400 String Trimmer View Diagrams & Manuals
UT-20610-C PSE3000 String Trimmer View Diagrams & Manuals
UT-15040-H ST385BC String Trimmer View Diagrams & Manuals
UT-15040-J ST385BC String Trimmer View Diagrams & Manuals
UT-15040-K ST385BC String Trimmer View Diagrams & Manuals
UT-15178 ST725 String Trimmer View Diagrams & Manuals
UT-15153 ST725SC String Trimmer View Diagrams & Manuals
UT-15136-A Versatool String Trimmer View Diagrams & Manuals
UT-15107 Z725CB String Trimmer View Diagrams & Manuals
UT-15107-1 Z725CB String Trimmer View Diagrams & Manuals
UT-15106 Z830SB String Trimmer View Diagrams & Manuals
UT-15116 Z830SBA String Trimmer View Diagrams & Manuals
RY30160 30cc Brushcutter View Diagrams & Manuals
RY30260B 30cc Brushcutter View Diagrams & Manuals
RY30570 30cc String Trimmer And Brushcutter View Diagrams & Manuals
RY30562 30cc Brushcutter View Diagrams & Manuals
RY30260 30cc Brushcutter View Diagrams & Manuals
RY30564 30cc Brushcutter View Diagrams & Manuals
Show More Compatible Models
This item works with the following types of products:
- Trimmer Parts
- Edger Parts
This part replaces obsolete part #: UP04129, 638017001
Customer Part Reviews ?
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washer and hex nut
The hex nut was not useable (wrong size, too small).
Guest -
September 12, 2019
Verified Purchase
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t days ago
Verified Purchase
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Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
the nut striped
Charles - November 6, 2022
Tool Type
Trimmer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Nutdriver
removed the old parts
replace the gear box with the new unit
installed the new cutting blade
replace the gear box with the new unit
installed the new cutting blade
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Lock nut was stripped.
John - July 14, 2020
Tool Type
Edger
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Socket set
Parts Used
Used a dremel tool to cut the damaged lock nut off.
Then I replaced the edger blade.
Then I replaced the edger blade.
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Blade struck hidden wire and came off including washers and nut.
Michael - April 10, 2018
Tool Type
Trimmer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Socket set
Simply installed parts ordered as per manual including the new blade.
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Added brush cutter to weed eater
JAMES - August 22, 2017
Tool Type
Trimmer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Wrench Set
Disassembled string head and assembled cutter
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All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
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