Standard Auger Sizes

Sizes #4 – #32 Milled from Solid Bar Stock

Auger # Diameter Pitch Stem Dia. Cu. Inches Per Revolution Cu. Centimeters Per Revolution
# 4 1/4″ 1/4″ .160 .012 Cu. In. .114 Cu. CM
# 6 3/8″ 1/2″ 3/16″ .055 Cu. In. .671 Cu. CM
# 8 1/2″ 1/2″ 3/16″ .098 Cu. In. 1.37 Cu. CM
#10 5/8″ 5/8″ 7/32″ .192 Cu. In. 2.73 Cu. CM
# 12 3/4″ 1″ 1/4″ .441 Cu In. 7.22 Cu. CM
#14 7/8″ 1-1/4″ 5/16″ .751 Cu In. 12.3 Cu. CM
#16 1″ 1-1/4″ 5/16″ .981 Cu. In. 16.0 Cu. CM
#18 1-1/8″ 1-1/2″ 5/16″ 1.491 Cu. In. 24.4 Cu. CM
#20 1-1/4″ 1-1/2″ 5/16″ 1.841 Cu. In. 30.1 Cu. CM
#22 1-3/8″ 1-1/2″ 3/8″ 2.227 Cu. In. 36.5 Cu. CM
#24 1-1/2″ 2″ 3/8″ 3.534 Cu. In. 57.9 Cu. CM
#26 1-5/8″ 2″ 3/8″ 4.147 Cu. In. 67.9 Cu. CM
#28 1-3/4″ 2″ 1/2″ 4.810 Cu. In. 78.8 Cu. CM
#30 1-7/8″ 2″ 1/2″ 5.522 Cu. In. 90.5 Cu. CM
#32 2″ 2″ 1/2″ 6.283 Cu. In. 103 Cu. CM

Sizes #36 – #52 Rolled and Welded Construction

Auger # Diameter Pitch Stem Dia Cu. Inches Per Revolution Cu. Centimeters Per Revolution
#36 2-1/4″ 2-1/2″ 5/8″ 9.940 Cu. In. 163 Cu. CM
#40 2-1/2″ 2-1/2″ 5/8″ 12.271 Cu. In. 201 Cu. CM
#44 2-3/4″ 3-1/2″ 5/8″ 20.788 Cu. In. 340 Cu. CM
#48 3″ 3-1/2″ 5/8″ 24.740 Cu. In. 405 Cu. CM
#50 3-1/8″ 3-1/2″ 5/8″ 26.844 Cu. In. 440 Cu. CM
#52 3-1/4″ 3-1/2″ 5/8″ 29.035 Cu. In. 475 Cu. CM

Auger size numbers represent 1/16″ diameter
(No. 16 = 16/16 = 1 inch auger diameter)

Comments are closed