Sorry, online purchases are not available in your country.
Confirmation
Do you really want to delete this item(s) from your shopping cart?
Close

Managing quotes online is only available to users with corporate accounts. You can still request a quote, but it will be emailed to you.

Request Quote

Upgrade to a corporate account for advanced options and personal service.

ATTENTION
Attention
  • BDI’s Warehouse Store is a limited catalog featuring only stocked items, priced exclusively for self-service online purchases made within the BDI Warehouse Store.

  • Pricing shown is available ONLY in the Warehouse Store and NOT from BDI Branch offices.

  • All sales are taxable (no tax free purchases) and payable by credit card. They cannot be charged to your BDI account.

  • All orders include a $5 ground shipping charge.

  • To purchase with your BDI account, please click Cancel.
  
ATTENTION
Attention
Soon you will not be able to run BDIExpress with Internet Explorer.

Microsoft is discontinuing support for the Internet Explorer web browser and obsoleting it. Microsoft is recommending switching to Microsoft Edge.



Or click below to download another browser 
 

25A21H https://www.bdiexpress.com/medias/INDXXXSPKTXX-RC-A-NH-1-MPB-NKW-STL-300x300.jpg?context=bWFzdGVyfHJvb3R8ODU1NnxpbWFnZS9qcGVnfGFEVmlMMmhtWmk4NU9EZzJNVFV5T1RneU5UVTRMMGxPUkZoWVdGTlFTMVJZV0Y5U1ExOUJYMDVJWHpGZlRWQkNYMDVMVjE5VFZFeGZNekF3ZURNd01DNXFjR2N8NzU2MjZiYmYxNDU5OTBlM2UxNzFjMmU1ZjFiNmRlZmJlYjE5ZGE1Mjc5MmZjYTA1Yjg0NDE3YjIwNmVhZTYyYw
Back to search results
742491 Roller Chain Sprockets 

POWERDRIVE LLC POWERDRIVE LLC

25A21H

Description

25A21H

Roller Chain Sprocket; 25 Chain; 21 Teeth; 1 Row of Teeth; Hardened Teeth; 1.809" Outside Diameter; 1.678" Pitch Diameter; A-No Hub; Rough Bore Mount; No Bushing; 1/4" Chain Pitch; ANSI Roller Chain; No Keyway; Steel Material

Part #

25A21H

BDI #
742491

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Details

5.6959 USD 2099-12-31 http://schema.org/NewCondition https://schema.org/LimitedAvailability Your Price $ 5.70 / each
$ 5.81 / each BDIExpress
QTY

Inventory

Total: Available to order

Category
Roller Chain Sprockets
Brand
POWERDRIVE LLC
Manufacturer Name
POWERDRIVE LLC
Minimum Buy Quantity
N/A
Weight / Kilogram
0
EAN
0637363114954
Product Group - BDI
M02312
Chain Size
25
Number of Teeth
21
Number of Rows of Teeth
1
Hub Type
A-No Hub
Mounting Method
Rough Bore
Bushing Size if bushed
No Bushing
Hardened Teeth
Yes
Chain Type
ANSI Roller Chain
Keyway Yes/No
No
Material
Steel
Minimum Plain Bore
Yes
Inch - Metric
Inch
Category - BDI
Sprockets
Harmonized Tariff Code
8483.90.10.50
Noun
Sprocket
Keyword String
Roller Chain
Manufacturer URL
http://www.powerdrive.com
Manufacturer Item Number
25A21H
Weight / LBS
0.04
Long Description
Roller Chain Sprocket; 25 Chain; 21 Teeth; 1 Row of Teeth; Hardened Teeth; 1.809" Outside Diameter; 1.678" Pitch Diameter; A-No Hub; Rough Bore Mount; No Bushing; 1/4" Chain Pitch; ANSI Roller Chain; No Keyway; Steel Material
Bore
0 Inch | 0 Millimeter
Pitch Diameter
1.678 Inch | 42.621 Millimeter
Outside Diameter
1.809 Inch | 45.949 Millimeter
Chain Pitch
0.25 Inch | 6.35 Millimeter

These items are similar to the one you've selected.
You can uncheck any attribute to search for other items which vary in relation to that attribute.

Find alternatives

Refresh

© copyright 2025 BDI All Rights Reserved