American Standard Double Pitch Carbon Steel Roller Chains

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Double Pitch Carbon Steel Roller Chains To ISO 606R- ANSI B 29.1/Din 8188 Standards

These Series of Chains are made using the same components of its shorter relatives except the pitch size has been doubled.

Example: 208A(A2040) Chain has the same Pin, Bush, & Roller as 08A (40-1) with the only difference being that the side plate length has been increased so as to double the pitch to 1″.

Unlike its British Equivalent, the American series have been extensively developed to suit all types of applications and are available with both Waisted and Straight side plates with other options that include: Holes in Side Plates at Mid pitch, Large Rollers in Carbon Steel as well as Delrin with or without Outboard Rollers, Hollow Pins, Increase Capacity through Thicker Side Plates, Accumlator Types, K1, K2, M1, M2 Attachments, Extended Pins – Plain, D3,Threaded. With most if not all being available in Standard Carbon Steel – Nickel Plated – Zinc Plated and Stainless Steel.

Precision Roller Chains: as the company offer a combined range, that is produced by a number manufacturers from around the World, they have adopted the following Quality Standards :-

  • All chains have been produced in plant that is Certified to ISO 9001.
  • Chains covered by the ISO 606R Standard, will conform to this Standard of Specification and Quality.
  • For chains not covered by ISO 606R, then we have adopted the appropriate Din 8187 or Din 8188 or Ansi B 29.1 of Specification and Quality Standard.
  • Work standard chains not covered by the above standards will conform to the appropriate Manufacturer’s Standard.

Range of Sizes

Note: We are continuously adding to or Extending our Ranges, hence if you cannot find it listed here, then please contact us via the ENQUIRY link on each page.

Only listed here are the base designations for these chains, although there is a number of prefixes that designate the different types! 

Supply Size

Std Box length: 5meters, 10Ft

Cut lengths: to order

Parts & Tools

Connecting Links:-Sizes up to & inclusive of 1”Pitch(16B) are available in SPRING CLIP TYPE and for Size 1”Pitch(16B) & above would COTTERED or SPLIT PIN TYPE.

Offset/Crank Link: Single Pitch type only

Chain Breakers: 3/8″ to 3/4″ & 3/4″ to 1 1/4″.


Standard Types are:

  • Extended Plain Pins One side or Both. (These can be on every pin or at intervals along a supply length)
  • Extended Grooved Pin One side or Both (These can be on every pin or at intervals along a supply length)

Attachments Side Plates:

  • K1 Bent with One Fixing Hole on One side or Both.
  • K2 Bent with Two Fixing Holes on One side or Both.
  • M1 Vertically Straight with One Fixing
  • M2 Vertically Straight with Two Fxing Holes on One side or Both.

(above can be on Inner or Outers Plate links or every plate or intervals along the supply length)

Other types being available upon request see our Attachment Page

Alternative Materials


Sourcing Service

If you cannot find the Chain you are looking for or you have a reference not listed here then in the first instance, please review our CROSS REFERENCE LISTING page or if you still cannot find what you are looking for then ask our Sales office by utilising the ENQUIRY button.


Be Careful when replacing drive wheel for these chains, as well as drive wheel cut to the correct Pitch Size. It is also possible to use the Shorter Pitch Standard Ansi sprockets and be driving off every other Tooth. We would strongly recommend that you obtain the Outside Diameter and number of teeth to confirm which type is fitted.

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