Delta®
Bonnet Nut in Chrome
Model#:
RP1050
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Documents & Specs
Installation Information
Overall Height (in.) :
7/8
Valve Type:
NA
REVIEWS
Rated 3 out of
5
by
kcarter5 from
Finally I found this part number!!!
I'm working on an older Delta faucet in our kitchen. Couldn't get the bonnet nut off so I have to cut it off. According to the manual I needed part #RP50PB. I searched everywhere but it had been discontinued. Accidently ran across review on another website saying part #RP1050PB was the exact same part minus the adjusting ring. So on Delta's website why didn't it tell me the part was discontinued but could be replaced with this new number??? It would have saved me a lot of time. Very frustrating!!!
Date published: 2024-07-10
Rated 3 out of
5
by
harold 1369 from
Supposed to be a lifetime guarantee but I had to p
Although I have had this for many years this time I had to pay for parts to get it working properly again.
Date published: 2022-06-20
Rated 5 out of
5
by
ed from
great customer service
received the part I ordered but it did not fit you gave me my money back without returning the product great with no problem thank you and if I have to order again will order through you
Date published: 2020-12-19
Rated 5 out of
5
by
Todd from
[This review was collected as part of a promotion.] It works great!
Date published: 2016-12-01
Rated 5 out of
5
by
Bill55 from
Much better than the original
[This review was collected as part of a promotion.] On the original there were some serrations but nothing to really grip the nut if it was stuck, and they always are. The new ones have a shoulder which allows you to get a better grip with out damaging the nut.
Date published: 2016-11-30
Rated 5 out of
5
by
Greatcontender from
nothing like OEM
If your repairing something and you have the chance to use the original parts from the manufacturer your chances of being satisfied with the results are far better. I have used others and will always purchase OEM if I have the chance.
Date published: 2016-03-06
Rated 5 out of
5
by
AndyMH from
Better than the original
Easy to replace and just what was needd.
Date published: 2011-06-20
Rated 4 out of
5
by
Fixitgirl from
Delta kitchen faucet
This was a replacement for a part I nicked trying to remove with the wrong tool. It fit perfect and looks good.
Date published: 2009-12-18
Q&A
I'm not sure of the series of faucet I have in my shower. But i purchased the rp50 which is to small. Is the rp1050 I may need for my older unit?
Hi, Nate35!
Thanks for your question! To better assist you with this inquiry, please contact our Delta Customer Service line at (800)345-3358. We are available Monday-Friday, 7am-7pm, CST and Saturday, 8am-5pm, CST. You may also email at customerservice@deltafaucet.com.
Best Regards,
Rosanna
Date published: 2024-03-28
Plastic adjustment included with this nut
Is the plastic adjustment that fits in this nut included. The adjustment that determines the force placed on the valve / ball?
Thank you for your question. Delta Faucet model # RP1050 does not include the adjusting ring. If you need a cap with an adjusting ring, then we recommend purchasing RP50 from your local wholesaler or retailer.
Date published: 2024-03-28
What are the dimensions? Will this fit a shower faucet?
I have a house built in the '80s and need to replace the bonnet nut on the shower faucet (which has a knob and a ball). Can't find the exact bonnet nut anywhere but this one looks pretty similar. Dimensions, please? thx.
Hi BDor,
Thank you for your question. If your shower has a ball assembly, you have a 600 series unit. This cap will work with any Delta 600 series shower. The cap is 1 11/16" in diameter, and the opening is 1 1/16".
Best regards, Jon
Date published: 2026-06-22
Can I use RP1050 bonnet nut on a series 1600 scald guard shower faucet that is 43 years old? If not, what is correct part number and is it available?
Thank you for your question, Kenneth! The RP1050 bonnet nut will not work on this model as the 1600 has a different sized valve body. The correct part number for your bonnet is RP6079 which is still available for purchase.
https://www.deltafaucet.com/parts-product-detail?modelNumber=RP6079
Best regards, Edward
Date published: 2024-03-28
Replacement
Does this Bonnet Nut (RP1050) replace the RP50 - Bonnet Nut.
The Duke of Cool
Thank you for your question. Delta Faucet part # RP1050 is a replacement for Delta Faucet part # RP50. However, if you have a faucet that still needs the adjusting ring, then you will still need to order Delta Faucet model # RP50.
Date published: 2024-03-28
I am looking to replace the bonnet cap on my kitchen faucet. It is model # 156-RB-WF. Is this the correct part I am looking for?
Thank you for your review, Jenee Soccodato! The RP1050RB is the correct cap for model 156-RB-WF.
Best Regards
Themar
Date published: 2024-03-28
brushed nickel finish?
Has this faucet ever been available in a "Brushed Nickel" finish?
Trying to match a replacement RP1050 - thanks
Hi Rusty, Thank you for your question. The RP1050 has never been offered in the brushed nickel finish. The (SS) brilliance stainless finish of the RP1050SS is a brushed finish similar to other brands brushed nickel.
Thanks,
Dave
Date published: 2024-03-28
dose a rp1050rb fit a model#155
Hi Merzzie,
Thank you for your question. Delta Faucet model # RP1050RB is not designed to fit the 155 kitchen faucet. If you are looking for the bonnet on the 155 for underneath the handle, it is model # RP51503.
Thanks.
Jody
Date published: 2024-03-28
Is the Pearl Nickel finish available?
I have the Waterfall Single-Handle Kitchen Faucet Model 172 in Pearl Nickel. I need a replacement Bonnet Nut, is one available?
Hi Mygraine, Thank you for your question!
The RP1050NN cap assembly is no longer available in the Pearl Nickel finish. The closest finish we have is the Brushed Stainless Steel finish. The part number would be RP1050SS.
Best regards,
Brandis
Date published: 2024-03-28
Will this fit the older more square shaped lavatory faucets?
Everything in the detail diagram looks the same. The faucets I'm working on are about 25 yrs old and the exterior shape of the faucet is a more square look but insides look the same.
Thank you for your question. Part #RP1050PB will fit as long as the faucet was manufactured prior to 1996.
Date published: 2024-03-28
Is the stainless steel version of this nut made from solid stainless steel?
Thank you for your question, DripDrip
the Delta RP1050SS Bonnet Nut is made of a quality material with a Stainless Steel finish.
Best regards
George
Date published: 2024-03-28
What is the diameter of this? Mine is 2” diameter and I can’t find it anywhere.
Hello!
This bonnet nut is 1 11/16" in diameter, and the opening is 1 1/16".
Please reach out with further questions!
Best Regards,
Tim
Digital Communications Specialist
Date published: 2026-06-23
does this bonnet nut fit delta series 600 shower assembly?
Hi majorjer,
Thank you for your question about the Delta Faucet RP1050.
This does fit a 600 series shower.
Please reach out with any additional questions!
Best Regards,
Bryan
Digital Communications Specialist
Date published: 2026-06-18
In the parts list for my faucet, it shows a faucet cap (bonnet nut), Part RP50, and an Adjusting Ring, Part RP250. But I don't see any adjusting ring in the faucet cap itself. Is this part available? The faucet is leaking from the cam.
Hi Gerry!
Thank you for your question and we are happy to help. Please contact us directly for further assistance.
Best Regards,
Carrie
Date published: 2024-07-08
I need a replacement bonnet cap nut for a 600 series shower valve. Is there one available?
Hi Roscoe,
Thank you for your question about the Delta Faucet RP1050 Bonnet Nut In Chrome. We will be happy to assist you as quickly as possible.
Yes, this part is used by 600 series shower faucets. It is also included in the RP54870 renovation kit that can be used to update a 600 series shower faucet.
https://www.deltafaucet.com/parts/product/RP54870.html
Please contact us directly if you have any questions or need additional assistance. Thank you for being a loyal Delta Faucet customer. We appreciate your business and look forward to continuing to serve you!
Best Regards,
Bryan
Digital Communications Specialist
Date published: 2024-03-28
What sets the tension on the ball with this type bonnet?
Hello Larry,
Thank you for your question! I will be happy to assist.
RP1050 is used with a lot of our older faucets as well as our newer ones. With the older faucets there was a piece called the adjusting ring which pushes the cam and packing on the ball to seal the parts. The cam and packing since then has been updated and now is a little thicker, therefore; the adjusting ring is no longer needed. Your feedback is important to us, as it helps us refine our products and services.
Feel free to contact us directly, if you need further assistance.
Best Regards,
Kyra
Date published: 2024-03-28
What is the correct bonnet nut for a Delta classic style 600 shower/tub valve? After 30+ years, I am concerned I may need to cut off the existing one to replace the rubber seals.
Hi psobota,
Thanks so much for contacting Delta Faucet Company!
The Bonnet MODEL#: RP22734 or the Bonnet Nut and O-Ring MODEL#: RP75852 depending on the model of your trim kit. Parts can be purchased online or locally. Please see our Where to Buy page for help finding dealers in your area or online.
https://www.deltafaucet.com/where-to-buy
Please reach out with further questions!
Best Regards,
Kelley
Digital Communications Specialist
Date published: 2024-03-28
can i use Great Neck Saw PW8 Pipe Wrench to open bonnet nut in Signature Single Handle Pull-Out Kitchen Faucet? my concern is wrench capacity? what is the size of bonnet nut?
Thank you for your question, farzad! The RP1050 bonnet can be removed by using an adjustable wrench. The cap is 1 11/16" in diameter, and the opening is 1 1/16".
Best Regards, Benjamin
Date published: 2024-03-28
does this come with a locking ring
Hi Valued Customer,
Thank you for contacting Delta Faucet Company!
Most of our older single handle faucets had an adjusting ring on top of the handle to help push seal water. New repair kits will include a new cam and packing that does not require the adjusting ring to be installed.
We appreciate your inquiry. Please reach out directly if you have further questions!
Best Regards,
Themar
Digital Engagement Specialist
Date published: 2025-07-29
What is the overall diameter of the nut
Hello Valued Customer,
Thank you for contacting Delta Faucet Company!
The Delta RP50 cap assembly is 1 11/16" in diameter, and the opening is 1 1/16".
We appreciate your inquiry. Please reach out directly if you have further questions!
Best Regards,
Kyra
Digital Communications Specialist
Date published: 2025-01-13
My bonnet nut had a screw-in white plastic ring seated at the top as per your picture. It shattered when I disassembled my faucet for repair. How can I get a replacement for that white ring?
Hi DanM,
Thanks so much for contacting Delta Faucet Company about the RP1050!
The adjusting ring can be purchased separately and can be found locally or online. I have included a link below.
https://www.deltafaucet.com/parts/product/RP250.html
Please contact us directly if you have any questions or need additional assistance.
Best Regards,
Nicole
Digital Communications Specialist
Date published: 2024-03-28
where is the white plastic insert on the top of the part?white with 4 notches
I have single handle (crystal) ball type shower faucet (don't know the series number), what is the part number for the bonnet nut (cap) ? RP50 or RP1050?
What is the adjusting ring part number that fits this? Preferably a metal adjusting ring.
Hello Smiley,
Thank you for your question! We apologize that the information you are searching for was not readily available and I am happy to assist you! We thank you for being a loyal Delta Faucet customer.
The Delta Faucet part number RP1050 Bonnet Nut does not require an adjusting ring.
Please contact us back directly with any further questions.
Best Regards,
Skyler
Date published: 2024-03-28
Hi, I have a 174-WHWF Waterfall Single Handle faucet. The cap I have, has a piece of hard plastic integrated into the top of the cap. Is that the old version, and the current versions doesn’t have it?
Hi Valued Customer,
Thank you for contacting Delta Faucet Company!
Most of our older single handle faucets had an adjusting ring on top of the handle to help push seal water. New repair kits will include a new cam and packing that does not require the adjusting ring to be installed.
We appreciate your inquiry. Please reach out directly if you have further questions!
Best Regards,
Kyra
Digital Engagement Specialist
Date published: 2024-05-20
I am having problems removing bonnet from vanity Venetian handle . There is no way to hold assembly under sink to allow proper torque on bonnet, without entire assembly spinning beneath. I can only hold stem under sink in my hand while trying to turn.
Hello,
Thank you for your question!
We recommend wrapping a cloth soaked in a 50/50 solution of white vinegar and water around the bonnet for a few hours to allow the mineral build-up within the threads to break down. This is typically what can cause removal to be difficult.
Please reach out with further questions!
Best Regards,
Tim
Digital Communications Specialist
Please reach out with further questions!
Best Regards,
Tim
Digital Communications Specialist
Date published: 2024-05-28
What kitchen sink model faucets use part Delta Faucet RP1050RB? This part appears identical to what I need, but not sure. I have venetian bronze single handle pull out kitchen faucet 2 hole and an additional hole for soap dispenser from year 2007.
Hi Mike,
Please accept our sincere apology for the inconvenience you are experiencing. We have reached out to you via email to further assist at this time.
Best Regards,
Tim
Digital Communications Specialist
Date published: 2024-06-07
What tool can I use to remove this nut?
Thank you for your question. The RP1050SS bonnet nut unscrews counter-clockwise. Use a strap wrench or a rubber jar lid opener to get a better grip on the nut.
Best regards,
Themar
Date published: 2024-03-28
Will this fit my delta 9113-AR-DST kitchen faucet
Hi Jodee,
Thank you for your question! Please accept our sincere apology for the inconvenience you are experiencing. Here is what we can do to resolve your issue for you.
The Delta Faucet RP54972AR Delta® Bonnet Cap - 1H Bathroom In Arctic Stainless is the recommended replacement cap for the Delta Faucet model 9113-AR-DST Single Handle Pull-Down Kitchen Faucet In Arctic Stainless.
Please feel free to contact us with any questions or for further assistance. Thank you for being a loyal Delta Faucet customer!
Best Regards,
Skyler
Date published: 2024-03-28
Will the RP1050Ss fit the older Delta 600 Series Shower valve? Also, when I look at older bonnet, there appears to be another ring inside of the bonnet. Ring has slots for wrench. So.....is there another piece to order? Thanks.
Hi Mike,
Thank you for your question about the Delta Faucet RP1050SS.
Yes, this bonnet nut fits 600 series showers. The bonnet or cap plus the RP250 adjusting ring is RP50.
The cam assembly RP188 is often also replaced for maintenance. If using a new cam assembly, the adjusting ring is not needed and can be removed.
Also, a renovation kit for a 600 series is available as RP54870 which also includes a new handle and escutcheon plate.
Please reach out with any additional questions!
Best Regards,
Bryan
Digital Communications Specialist
Date published: 2024-07-24
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