Oregon Tool® - 16-1/2" Lawn Mower Blade

Blade Width - Measure near the center of the blade.
Thickness - Measure near the center of the blade.
Blade Length - Measured diagonally from the corners of the blade
Center Hole Size - Many blades will have a round hole in the center of the blade and you will need to know its diameter. Blade Length 5 or 7 Point Star Center holes may be 5 or 7 point star shaped. 5 point star on blade7 point star on blade Square or Rectangular The MTD built blades on many walk behind lawn mowers have a 'bow-tie' hole. In this case the Oregon replacement blade will have a rectangular center hole which will fit on the bow-tie pattern on the blade adapter. Square or Rectangular hole on blade MTD Blades The MTD™ built blades (Bolens, Cub Cadet, Troy-bilt, White, Yard Machine, and Yardman) may have a 6 point star. Oregon replacement blades will have a 'Y' shaped center hole which will fit exactly on the 6 point star on the blade spindle. 6 point star for MTD blades The two sizes of the 6 point star. If your blade spindle has a bolt and lock washer that holds the blade to the machine you would use the 11/16" star or 'Y' blade. blade spindle with bolt and lock washer. If your blade is secured with a large flange nut then you would use the 5/8" star or 'Y' blade. blade spindle with large flange nut
OffSet - (Sometimes referred to as offset): If you set the blade on a table this is the distance the center of the blade is above the table top (if any) when the cutting edges are flat on the table
Air Lift - Air lift is the distance the lift panel rises above the cutting edge.

Fit Guide
Gravely: 988140, 988141, 988142, 988143, 988145, 988147, 988148, 988150, 988152, 988154, 988155, 988157, 988158, 988400, 988402, 988403, 988410, 988412, 988641, 992409, 992600, 992605, 992606, 992607, 992609, 994100, 994103, 994104, 994105, 994106, 994107, 994109, 994110, 994111, 994112, 994113, 994114, 994115, 994117, 994118, 994401, 994601, 994604
Hustler: 928267, 928275, 928520, 928520CA, 929133, 929471, 929521, 929570CE, 929588CE, 929604, 930107, 930107CE, 930115, 930123, 930123US, 930130US, 930131CE, 930149, 930149CE, 930149US, 930156US, 930164, 930164US, 930172US, 930180CE, 930198, 930206, 930206US, 930214, 930222, 930222US, 930230, 930289, 930297, 930305, 930313, 930388CE, 930396CE, 930503, 930503US, 930511, 930522, 930529, 930529US, 930537, 930537US, 930545, 930560, 930578, 930586, 930594, 930644CE, 930651, 930693, 930701, 930719, 930727, 930784, 930883, 930891, 931006, 931055, 931055US, 931303, 931311, 931329, 931600CE, 931618CE, 931626CE, 931774, 931782, 932194, 932202, 932210, 932228, 932236, 932244, 932251, 932269, FasTrak, Sport, X-One
Snapper: PMA480
Wright Stander: Sentar Sport, Sentar2, Sentar3, Stander

Replacement Guide
Dixon: 11645, 539100340
Gravely: D18086, GDU10230
Great Dane: D18086, GDU10230
Hustler: 601014, 601014X, 601123, 601123X, 601123Y, 795757, 795757X, 795757Y, 796623, 796623X, 796623Y, 796631, 796631X, 796631Y, 796649, 796649X, 796649Y
John Deere: AM104489, M73509, PT11136, TCU29299, TCU35392, TCU37209
Land Pride: 839-157C, 839-270C
Snapper: 17043, 7017043, 7017043YP, 7075771, 7075771BMA, 7075771BZ, 7075771BZYP
Toro: 107-3192, 107-3192-03, 107-3193, 107-3193-03, 107-3194, 107-3194-03, 107-3195, 107-3195-03, 107-3196, 107-3196-03, 110-0415, 110-0416, 110-0417
Wright Stander: 71440002, 71490001