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 
 

40B12 https://www.bdiexpress.com/medias/INDXXXSPKTXX-RC-B-1-STL-300x300.jpg?context=bWFzdGVyfHJvb3R8NjcwNXxpbWFnZS9qcGVnfGFEZzJMMmcyTXk4eE1EYzNNRGt3T0RJMU1ERTBNaTlKVGtSWVdGaFRVRXRVV0ZoZlVrTmZRbDh4WDFOVVRGOHpNREI0TXpBd0xtcHdad3w5OWIzMGQwZjg5NjhhZGE5NzY0MjQ2ZjA2NDNhNGJhYzI0ZjBkMzk0MjE0N2ZiNjNhZmFkZmZjMjk2MTk3YjFl
620159 Roller Chain Sprockets 

MARTIN SPROCKET & GR MARTIN SPROCKET & GR

40B12

Description

40B12 ROLLER CHAIN SPROCKET ; 1/2" P 12T 1/2" MIN PLAIN BORE

Roller Chain Sprocket; 40 Chain; 12 Teeth; 1 Row of Teeth; No Hardened Teeth; 2.166" Outside Diameter; 1.932" Pitch Diameter; B-Hub One Side; Rough Bore Mount; No Bushing; 1/2" Chain Pitch; ANSI Roller Chain; No Keyway; Steel Material

Part #

40B12

BDI #
620159

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

Details

20.1262 USD 2099-12-31 http://schema.org/NewCondition http://schema.org/InStock Your Price $ 20.13 / each
$ 20.13 / each BDIExpress
QTY

Inventory

Total: 7

Category
Roller Chain Sprockets
Brand
MARTIN SPROCKET & GR
Manufacturer Name
MARTIN SPROCKET & GEAR
Minimum Buy Quantity
N/A
UNSPSC
31171901
Weight / Kilogram
0.204
EAN
0697950003658
Product Group - BDI
M02312
Chain Size
40
Number of Teeth
12
Number of Rows of Teeth
1
Hub Type
B-Hub One Side
Mounting Method
Rough Bore
Bushing Size if bushed
No Bushing
Hardened Teeth
No
Chain Type
ANSI Roller Chain
Keyway Yes/No
No
Material
Steel
Max Bore
1
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
https://www.martinsprocket.com
Weight / LBS
0.45
Long Description
Roller Chain Sprocket; 40 Chain; 12 Teeth; 1 Row of Teeth; No Hardened Teeth; 2.166" Outside Diameter; 1.932" Pitch Diameter; B-Hub One Side; Rough Bore Mount; No Bushing; 1/2" Chain Pitch; ANSI Roller Chain; No Keyway; Steel Material
Pitch Diameter
1.932 Inch | 49.07 Millimeter
Outside Diameter
2.166 Inch | 55.016 Millimeter
Chain Pitch
0.5 Inch | 12.7 Millimeter
Bore
0 Inch | 0 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