Description
3639 005 0081 STIHL 33RS Saw Chain – 3/8” Pitch, .050” Gauge, 81 Drive Links (20”)
The STIHL 3639 005 0081 is a top-tier 33RS Rapid Super saw chain designed for maximum cutting speed, precision, and efficiency. With a 3/8” pitch, .050” gauge, and 81 drive links, this full chisel chain is built for professional use on 20-inch guide bars, making it ideal for felling, bucking, and firewood production in clean wood.
Specifications:
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OEM Part Number: 3639 005 0081
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Chain Type: 33RS – Rapid Super (Full Chisel)
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Pitch: 3/8”
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Gauge: .050” (1.3 mm)
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Drive Links: 81
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Compatible Bar Length: 20” (50 cm)
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Cutter Style: Full chisel (square-cornered)
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Kickback Rating: Not low-kickback – designed for experienced operators
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Lubrication: STIHL Oilomatic® system for smooth operation and extended life
Key Features:
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High-speed full chisel cutters deliver aggressive, fast cuts in clean hardwood
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Optimized for powerful chainsaws and high-output cutting environments
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No safety ramps, allowing for greater chip flow and cutting speed
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Built for professional forestry applications, not recommended for novice users
Compatibility:
Fits STIHL saws with 20” bars and 3/8” pitch, .050” gauge chains, including:
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MS 362, MS 391, MS 400 C-M, MS 462, MS 500i, MS 660, MS 661 C-M
(Always verify your saw’s chain specs before installation)
Comparable Replacements (If OEM Not Available):
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Oregon: 72LPX081G
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Carlton: A1LM081G
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Forester: F33-81
(Match pitch, gauge, and drive links exactly for safe use)
The STIHL 33RS (3639 005 0081) is the chain of choice for professional loggers, arborists, and forestry crews seeking the fastest and most efficient cut in clean wood. Its full chisel design delivers top-tier performance, especially when paired with high-powered STIHL chainsaws.
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