Stihl 18″ Chainsaw Chain 33T

STIHL uses a Marketing Number System in addition to the part number. This allows easy identification of any chain. For example, chain with a Marketing Number of 33 RS3:

Pitch	Gauge	Type	Shape	Special
3	3	R	S	3
3/8″	.050″	STIHL RAPID™	Super	Single-Humped Drive Link

Distance between three rivets divided by two as shown. Pitch (Marked on cutter) 1 = 1/4″ 2 = .325″ 3 = 3/8″ 4 = .404″ 6 = STIHL PICCO™ (3/8″ Extended) 7 = STIHL PICCO™ (1/4″ Extended) Cutter Type R = STIHL RAPID™ P = STIHL PICCO™ Cutter Shape S = Super (Full Chisel) M = Micro™ (Semi Chisel) D = Duro (Carbide Tip) R = Rescue (RDR chain, especially designed for MS 460 R STIHL Magnum® Rescue carbide segment)

Gauge (on drive link) 1 = .043″ (1.1 mm) 3 = .050″ (1.3 mm) 5 = .058″ (1.5 mm) 6 = .063″ (1.6 mm) 0 = .080″ (2.0 mm) Harvester Chain Only Special 1 = Triple-humped Tie Strap on PM chain 2 = Triple-humped Tie Strap on RM chain 3 = Single-Humped Drive Link F = Full Skip H = Semi Skip (Half-Skip) or Harvester (i.e. on .404″ RMH) K = Classic Cutter Design L = Square Ground Chisel M = Mini MM = Mini Micro™ N = Narrow (PMN) S = Special

Number of Drive Links in Reels

Type	100′ Reel
1/4″ 3/8″ STIHL PICCO™ .325″ 3/8″ .404″	2400 1640 1840 1640 1480

ANSI B175.1 Chain Saw Kickback Standard
STIHL’s green and yellow color code system serves to identify STIHL bars and chains with different kickback reduction characteristics. Green (go) marks those products which are designed to reduce the risk of kickback injury and comply with the ANSI B175.1 kickback standard. STIHL’s low-kickback chain features a green tie strap that identifies each loop as “low-kickback” chain that meets the ANSI standard. Recommended for both the experienced and inexperienced chainsaw user. Yellow (caution) marks products with increased risk of kickback injury. They are for use only by persons with extraordinary cutting needs and experience and specialized training in dealing with kickback conditions.