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 
 

1 Items found

Refine by

Current selections:
Category: Roller Chain Sprockets
Bore - Inch: 2.835
categories
Need help?
833-505-2801 BDIEXPRESS Direct  | 

INDICATES Contract Pricing


Compare
D12B21 72MM NKW

COMPARE

D12B21 72MM NKW

Description
MARTIN SPROCKET & GR D12B21 72MM NKW

MARTIN SPROCKET & GR

Part # D12B21 72MM NKW

BDI # 23938991

Features

Chain Pitch - Inch: 0.75
Chain Size: 12B-2
Chain Pitch - Millimeter: 19.05
Pitch Diameter - Inch: 5.032
Inch - Metric: Metric

Material: Steel
Outside Diameter - Inch: 5.426
Other Features: Duplex Type
Pitch Diameter - Millimeter: 127.82
Mounting Method: Finished Bore

Price Inventory : Available to order
QTY

© copyright 2025 BDI All Rights Reserved