3720-8M-20 Timing Belt Poly Chain HTD Belt What does the S3M in

What does the S3M in 100-S3M-738 mean

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Number of Teeth 40 Width 06mm

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"mpn":"TB072053612349"

3720-8M-20 Timing Belt Poly Chain HTD Belt What does the S3M in3720 8M 20 Timing Belt The 3720 8M 20 is a timing belt from D&D Global's Dura Sync Torque 8M Series line. It transmits power positively with no slip, holding timing between shafts on synchronous drives. Specification Value Part Number 3720 8M 20 Belt Type Timing Belt Tooth Profile 8M HTD (curvilinear) Tooth Pitch 8 mm Number of Teeth 465 Belt Width 20 mm Pitch Length 3720 mm (Pitch Length) Construction Chloroprene (Neoprene), Fiberglass cord, fabric