DRILLS REAMERS COUNTERBORES END MILLS CUTTERS SINGLE POINTS
REAMERS - MATERIAL SPECIFIC CHUCKING REAMERS - Expansion Type - Taper Shank
Fractional

TOOL SELECTOR
CHIP
CLASS		MATERIAL MACHINEDTOOL TYPE
 20  NON-FERROUS - LONG CHIPS  461 
 40  NON-FERROUS - SHORT CHIPS  461 / 462 
 60  CAST IRONS  462 
 80  LOW STRENGTH STEELS  463 / 462 
 100  MEDIUM STRENGTH STEELS  463 
 120  HIGH STRENGTH STEELS  463 
 140  HIGH TEMPERATURE ALLOYS  463

National Aerospace Standards - NAS 897
Type 461 Fractional - For Non-Ferrous Materials
Carbide Tipped
  • Type "C" with flute long carbide
  • Straight polished flutes and taper shank
  • Expansion screw permits expansion of tool diameter for regrinding after wear without reinserting carbide
  • Geometry and carbide grade appropriate for material being machined
  • Carbide tips brazed to tough hardened alloy steel body, except expansion reamers which are not hardened
  • Polished flutes for easy chip flow
  • Precision ground cutting edges
  • “Taper Shank No.” refers to American Standard taper series (formerly Morse taper series) per ASME/ANSI B5.10
  • Material specific reamer shanks are ground to next smallest shank diameter listed in NAS 897 if tool diameter is within .005" of shank diameter
 		  Modifications: (Prompt delivery)
  • Modified tool diameter - priced below
  • Metric tool diameter
  • Closer tool diameter tolerance
  • Cutting diameter reduced for step or pilot
  • End chamfer other than 45º
  • End cutting or corner radius
  • Increased / decreased circular margin
  • Increased / decreased tool diameter back taper
  • Shank whistle notch for set screw
  • Smaller taper shank
Use:
  • Expansion reamers are recommended for reaming abrasive materials. As the diameter wears down, the reamers can be expanded many times by tightening the end expansion screw and regrinding to its original size. Expansion reamers should not be considered as adjustable for use in producing holes of different sizes.
Tool Diameter Type 461
EDP NO.		 Fractional
Price		 Dimensions Finished To Modified Tool Diameter
Taper Shank No. No. of Flutes Length Modified Diameter Range Price Each - Based on Quantity Ordered
Frac. Dec. Flute & Carbide Overall Low High 1 2 3 4 5-7 8-14*
   3/8   .3750 46112 $66.80 1 4 1         7          .3471  .3780 $92.45 $79.60 $75.30 $73.25 $71.05 $69.30
  13/32  .4063 46113 67.80 1 4 1         7          .3781  .4090 93.45 80.60 76.30 74.25 72.05 70.30
   7/16  .4375 46114 68.80 1 6 1         7          .4091  .4410 94.45 81.60 77.30 75.25 73.05 71.30
  15/32  .4688 46115 71.75 1 6 1         7          .4411  .4720 97.45 84.60 80.25 78.20 76.00 74.30
   1/2   .5000 46116 72.20 1 6 1         8          .4721  .5030 97.85 85.00 80.70 78.65 76.45 74.70
  17/32  .5313 46117 74.45 1 6 1         8          .5031  .5340 100.10 87.25 82.95 80.90 78.70 76.95
   9/16  .5625 46118 74.45 1 6 1  1/8  8          .5341  .5660 100.10 87.25 82.95 80.90 78.70 76.95
  19/32  .5938 46119 77.25 1 6 1  1/8  8          .5661  .5970 102.90 90.05 85.75 83.70 81.50 79.75
   5/8   .6250 46120 77.45 2 6 1  1/4  9          .5971  .6280 103.10 90.25 85.95 83.90 81.70 79.95
  21/32  .6563 46121 84.10 2 6 1  1/4  9          .6281  .6590 109.80 96.90 92.60 90.55 88.35 86.60
  11/16  .6875 46122 84.35 2 6 1  1/4  9          .6591  .6910 110.05 97.20 92.85 90.80 88.60 86.90
  23/32  .7188 46123 87.40 2 6 1  1/4  9          .6911  .7220 113.10 100.20 95.90 93.85 91.65 89.95
   3/4   .7500 46124 87.40 2 6 1  3/8  9  1/2   .7221  .7530 113.10 100.20 95.90 93.85 91.65 89.95
  25/32  .7813 46125 93.80 2 6 1  3/8  9  1/2   .7531  .7840 119.50 106.65 102.30 100.30 98.05 96.35
  13/16  .8125 46126 93.80 2 6 1  3/8  9  1/2   .7841  .8160 119.50 106.65 102.30 100.30 98.05 96.35
  27/32  .8438 46127 97.70 2 6 1  3/8  9  1/2   .8161  .8470 123.40 110.50 106.20 104.15 101.95 100.20
   7/8   .8750 46128 97.70 2 6 1  1/2  10          .8471  .8780 123.40 110.50 106.20 104.15 101.95 100.20
  29/32  .9063 46129 102.90 2 6 1  1/2  10          .8781  .9090 128.55 115.70 111.40 109.35 107.15 105.40
  15/16  .9375 46130 103.40 3 8 1  1/2  10          .9091  .9410 129.10 116.25 111.95 109.90 107.70 105.95
  31/32  .9688 46131 107.10 3 8 1  1/2  10          .9411  .9720 132.75 119.90 115.60 113.55 111.35 109.60
1         1.0000 46132 107.10 3 8 1  5/8  10  1/2   .9721 1.0030 132.75 119.90 115.60 113.55 111.35 109.60
1  1/32 1.0313 46133 113.90 3 8 1  5/8  10  1/2  — — — — — — — —
1  1/16 1.0625 46134 113.90 3 8 1  5/8  10  1/2  1.0031 1.0660 139.60 126.75 122.45 120.40 118.20 116.45
1  3/32 1.0938 46135 117.25 3 8 1  3/4  11         — — — — — — — —
1  1/8  1.1250 46136 117.25 3 8 1  3/4  11         1.0661 1.1280 142.90 130.05 125.75 123.70 121.50 119.75
1  3/16 1.1875 46138 125.10 3 8 1  3/4  11         1.1281 1.1905 150.80 137.90 133.60 131.55 129.35 127.65
1  1/4  1.2500 46140 133.60 4 8 1  7/8  11  1/2  1.1906 1.2530 159.30 146.40 142.10 140.05 137.85 136.15
1  5/16 1.3125 46142 138.65 4 8 1  7/8  11  1/2  1.2531 1.3155 164.30 151.45 147.15 145.10 142.90 141.15
1  3/8  1.3750 46144 153.75 4 8 2         12         1.3156 1.3780 179.45 166.60 162.30 160.25 158.00 156.30
1  7/16 1.4375 46146 170.40 4 8 2         12         1.3781 1.4405 197.80 184.05 179.50 177.30 174.95 173.10
1  1/2  1.5000 46148 175.55 4 8 2  1/8  12  1/2  1.4406 1.5030 202.95 189.20 184.65 182.45 180.10 178.25
1  9/16 1.5625 46150 245.95 4 8 2  1/8  12  1/2  1.5031 1.5660 273.35 259.60 255.00 252.85 250.50 248.65
1  5/8  1.6250 46152 245.95 4 8 2  1/4  13         1.5661 1.6280 273.35 259.60 255.00 252.85 250.50 248.65
1 11/16 1.6875 46154 272.50 4 8 2  1/4  13         1.6281 1.6910 299.90 286.15 281.55 279.40 277.05 275.20
1  3/4  1.7500 46156 272.50 4 10 2  3/8  13  1/2  1.6911 1.7530 299.90 286.15 281.55 279.40 277.05 275.20
1 13/16 1.8125 46158 322.65 4 10 2  3/8  13  1/2  1.7531 1.8160 350.05 336.35 331.75 329.55 327.20 325.35
1  7/8  1.8750 46160 322.65 4 10 2  1/2  14         1.8161 1.8780 350.05 336.35 331.75 329.55 327.20 325.35
1 15/16 1.9375 46162 352.35 4 10 2  1/2  14         1.8781 1.9410 379.75 366.00 361.40 359.25 356.90 355.05
2         2.0000 46164 352.35 4 12 2  1/2  14         1.9411 2.0030 379.75 366.00 361.40 359.25 356.90 355.05
* Quantities of 15 or more - price of fractional size in same size range