50-3
triple-strand ANSI B29.1 standard roller chain — pitch 0.625" (15.88 mm). ANSI 50 is dimensionally identical to ISO 10A — interchangeable across all major brands at matching designation.
Pricing not yet available.
We're building pricing coverage for chain. In the meantime, this cross-reference shows the equivalent designations and per-brand part numbers so you can source the right chain from any supplier — the ANSI / ISO standard guarantees the dimensional match.
Specifications
| Designation | ANSI 50 / ISO 10A |
| Series | ANSI B29.1 standard roller chain |
| Strand count | 3 (triple-strand) |
| Pitch | 0.625" (15.88 mm) |
| Roller diameter | 0.4" |
| Width between plates | 0.375" |
| Pin diameter | 0.2" |
| Plate thickness | 0.08" |
| Plate height | 0.591" |
| Min tensile (ANSI) | 14,640 lb |
| Avg tensile | 21,150 lb |
| Max allowable load | 3,580 lb |
| Mass | 2.08 lb/ft |
| Pin type | riveted |
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Equivalents Across Brands
ANSI B29.1 / ISO 606 standardize all primary dimensions across manufacturers — chains at matching designation are dimensionally interchangeable. Always verify brand-rated working load against your application before substitution.
| Brand | Part Number | Grade name | OEM |
|---|---|---|---|
| Tsubaki | 50-3RB | RS | Yes |
Related Chains
Other strand counts in the same designation, plus cross-series equivalents at matching pitch.