BOSTON GEAR 20 Diametral Pitch Steel Spur Gears, 14.5 Degree Pressure Angle
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| Style | Model | Face Width | Diametral Pitch | Pitch Dia. | Hub Dia. | Bore Dia. | Hub Projection | Number Of Teeth | Outside Dia. | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | NA22B | 0.38" | 20 | - | - | - | - | 22 | - | €67.24 | |
| B | NA11B | 0.38" | 20 | - | - | - | - | - | - | €43.38 | |
| C | NA36 | 0.38" | 20 | - | - | - | - | 36 | - | €100.71 | |
| D | NA35 | 0.38" | 20 | - | - | - | - | - | - | €96.54 | |
| E | NA30B | 0.38" | 20 | - | - | - | - | 30 | - | €72.62 | |
| F | NA16B | 3/8" | 20" | 4/5" | 0.66" | 3/8" | 0.38" | - | - | €52.60 | |
| G | NA40-3/4 | 3/8" | 20 | 2" | 1.72" | 3/4" | - | - | - | €143.62 | |
| H | NA12B | 3/8" | 20 | 3/5" | 0.45" | 0.313" | 0.38" | 12 | 0.7" | €48.67 | |
| I | NA13B | 3/8" | 20" | 0.65" | 1/2" | 0.313" | 0.38" | - | - | €46.15 | |
| J | NA14B | 3/8" | 20" | 0.7" | 14/25" | 0.313" | 0.38" | - | - | €49.23 | |
| K | NA15B | 3/8" | 20" | 3/4" | 3/5" | 3/8" | 0.38" | - | - | €50.76 | |
| L | NA16B-3/8 | 3/8" | 20" | 4/5" | 16/25" | 3/8" | 0.38" | - | - | €71.89 | |
| H | NA32 | 3/8" | 20 | 1 3/5" | 1.31" | 3/8" | 0.5" | 32 | 1.7" | €91.19 | |
| M | NA18B | 3/8" | 20" | 0.9" | 0.74" | 3/8" | 0.38" | - | - | €54.15 | |
| N | NA20B | 3/8" | 20" | 1" | 21/25" | 3/8" | 0.38" | - | - | €60.93 | |
| O | NA40-1/2 | 3/8" | 20" | 2" | 1 18/25" | 1/2" | 1/2" | - | - | €139.41 | |
| P | NA24 | 3/8" | 20" | 1 1/5" | 23/25" | 3/8" | 0.38" | - | - | €67.84 | |
| Q | NA25B | 3/8" | 20" | 1 1/4" | 0.97" | 3/8" | 0.38" | - | - | €70.47 | |
| R | NA28B | 3/8" | 20" | 1 2/5" | 1 3/25" | 3/8" | 0.38" | - | - | €71.60 | |
| S | NA40 | 3/8" | 20" | 2" | 1 18/25" | 3/8" | 1/2" | - | - | €101.16 | |
| T | NA48A | 3/8" | 20" | 2 2/5" | 1.33" | 3/8" | 1/2" | - | - | €131.06 | |
| U | NA50A | 3/8" | 20" | 2 1/2" | 1.42" | 3/8" | 1/2" | - | - | €131.22 | |
| V | NA40-5/8 | 3/8" | 20 | 2" | 1.72" | 5/8" | - | - | - | €139.41 | |
| W | NA40-3/8 | 3/8" | 20" | 2" | 1 18/25" | 3/8" | 1/2" | - | - | €139.41 | |
| X | NA64A | 3/8" | 20" | 3 1/5" | 2 3/25" | 3/8" | 1/2" | - | - | €172.61 | |
| Y | NA24-1/2 | 3/8" | 20 | 1.2" | 0.92" | 1/2" | - | - | - | €93.23 | |
| Z | NA12B-5/16 | 3/8" | 20" | 3/5" | 0.45" | 0.313" | 0.38" | - | - | €57.14 | |
| A1 | NA13B-5/16 | 3/8" | 20 | 0.65" | 1/2" | 0.313" | - | - | - | €60.57 | |
| B1 | NA15B-3/8 | 3/8" | 20" | 3/4" | 0.59" | 3/8" | 0.38" | - | - | €67.55 | |
| C1 | NA18B-3/8 | 3/8" | 20 | 0.9" | 0.73" | 3/8" | - | - | - | €72.72 | |
| D1 | NA20B-3/8 | 3/8" | - | 1" | 21/25" | - | 0.38" | - | - | €79.35 | |
| E1 | NA20B-1/2 | 3/8" | 20 | 1" | 0.84" | 1/2" | - | - | - | €88.11 | |
| F1 | NA22B-3/8 | 3/8" | 20" | 1.1" | 0.83" | 3/8" | 0.38" | - | - | €89.45 | |
| G1 | NA22B-1/2 | 3/8" | 20" | 1.1" | 0.83" | - | 0.38" | - | - | €91.72 | |
| H1 | NA24-3/8 | 3/8" | 20" | 1 1/5" | 23/25" | 3/8" | 0.38" | - | - | €93.23 | |
| I1 | NA25B-3/8 | 3/8" | 20 | 1 1/4" | 0.97" | 3/8" | - | - | - | €92.63 | |
| J1 | NA36-1/2 | 3/8" | 20" | 1 4/5" | 1 13/25" | 1/2" | 1/2" | - | - | €137.43 | |
| K1 | NA25B-1/2 | 3/8" | 20" | 1 1/4" | 0.97" | 1/2" | 0.38" | - | - | €92.63 | |
| L1 | NA28B-1/2 | 3/8" | 20 | 1.4" | 1.11" | 1/2" | - | - | - | €94.89 | |
| M1 | NA30B-3/8 | 3/8" | 20 | 1 1/2" | 1.22" | 3/8" | - | - | - | €102.58 | |
| N1 | NA30B-1/2 | 3/8" | 20" | 1 1/2" | 1.22" | 1/2" | 0.38" | - | - | €100.32 | |
| O1 | NA32-3/8 | 3/8" | 20" | 1 3/5" | 1 8/25" | 3/8" | 1/2" | - | - | €119.31 | |
| P1 | NA32-1/2 | 3/8" | 20" | 1 3/5" | 1.31" | 1/2" | 1/2" | - | - | €116.47 | |
| Q1 | NA35-3/8 | 3/8" | 20 | 1 3/4" | 1.45" | 3/8" | - | - | - | €134.41 | |
| R1 | NA35-1/2 | 3/8" | 20" | 1 3/4" | 1.45" | 1/2" | 1/2" | - | - | €131.11 | |
| S1 | NA36-3/8 | 3/8" | 20 | 1.8" | 1.52" | 3/8" | - | - | - | €137.43 | |
| T1 | NA60A | 3/8" | 20" | 3" | 1 23/25" | 3/8" | 1/2" | - | - | €144.81 |













































