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STEP REAMER TYPE 3443 - STRAIGHT SHANK - RIGHT SPIRAL FLUTE LONG CARBIDE - FOR CAST IRON
TYPE
Flute long carbide tips brazed to one piece hardened alloy steel bodies. Right spiral polished flutes. Available with cutting or non-cutting pilots.
Right spiral flutes have a greater chip clearing ability for use with ductile materials, highly abrasive materials or blind holes. Finishes are much better as spiral flutes tend to bridge interruptions such as keyways, slots or intersecting holes. NAS 897 chucking reamers manufactured to national aerospace standards 897 C with flute long carbide. Tool geometry and carbide grade appropriate for material being machined.
NOTES:
  1. Order must indicate if pilot is cutting or non-cutting and identify material being machined.
  2. The difference between major and minor diameter shall not exceed 6%, and must fall within dimensions shown for that particular tool.
  3. Non-cutting pilot diameters may be smaller than cutting diameter range, but not less than non-cutting pilot minimum diameter dimension shown.
  4. It is recommended that stock removal of 3% be the basis for selecting each cutting diameter.
Below is Lexington Cutter's selection of Step Type Reamers. We offer a wide variety of carbide tipped and solid carbide cutting tools. Over 95% are in stock either finished or semi finished for fast delivery.
Shanks are ground to the next smallest shank diameter listed in NAS 897 if tool diameter is within .005" of shank diameter.
Shank diameter tolerance thru 23/32" tool diameter: +.0000"/-.0010".
Shank diameter tolerance over 23/32" tool diameter: +.0000"/-.0015".
MAJOR AND MINOR
CUTTING DIAMETER
RANGE
NON-CUT
PILOT MIN.
DIAM.
MAX
SHANK
DIAM.
NO.
OF
FLTS.
FLT.
LEN.
OVER
ALL
LEN.
EDP
NO.
PRICE EACH - FINISHED TO DECIMAL SIZE
1 PC. 2 PC. 3 PC. 4 PC. 5-7 8-14 15+
 .2841 -  .3150  .2670  .2792 4  1/         344310ST $189.70 $149.60 $136.20 $129.80 $123.00 $117.60 $109.70
 .3151 -  .3470  .2960  .2792 4  1/         344311ST 200.90 160.70 147.30 141.00 134.05 128.75 120.80
 .3471 -  .3780  .3260  .3105 4  3/         344312ST 201.95 161.90 148.45 142.10 135.25 129.80 122.00
 .3781 -  .4090  .3550  .3105 4  3/         344313ST 207.40 167.30 153.95 147.50 140.65 135.25 127.40
 .4091 -  .4410  .3850  .3730 6  3/         344314ST 212.25 172.20 158.75 152.40 145.55 140.15 132.30
 .4411 -  .4720  .4150  .3730 6  3/         344315ST 220.70 180.60 167.25 160.80 154.00 148.55 140.70
 .4721 -  .5030  .4440  .4355 6                 344316ST 237.00 194.25 179.90 173.10 165.85 160.00 151.70
 .5031 -  .5340  .4730  .4355 6                 344317ST 241.45 198.65 184.40 177.60 170.25 164.50 156.10
 .5341 -  .5660  .5020  .4355 6                 344318ST 241.45 198.65 184.40 177.60 170.25 164.50 156.10
 .5661 -  .5970  .5320  .4355 6                 344319ST 246.00 203.35 189.05 182.20 174.85 169.10 160.70
 .5971 -  .6280  .5610  .5615 6  1/         344320ST 246.00 203.35 189.05 182.20 174.85 169.10 160.70
 .6281 -  .6590  .5900  .5615 6  1/         344321ST 251.10 208.45 194.05 187.25 179.90 174.15 165.85
 .6591 -  .6910  .6200  .5615 6  1/         344322ST 261.45 218.70 204.35 197.55 190.25 184.50 176.10
 .6911 -  .7220  .6500  .5615 6  1/         344323ST 264.10 221.35 207.05 200.20 192.90 187.10 178.85
 .7221 -  .7530  .6790  .6245 6  1/  1/ 344324ST 266.70 224.00 209.65 202.85 195.60 189.75 181.35
 .7531 -  .7840  .7080  .6245 6  1/  1/ 344325ST 271.55 228.85 214.50 207.70 200.35 194.60 186.20
 .7841 -  .8160  .7370  .6245 6  1/  1/ 344326ST 271.55 228.85 214.50 207.70 200.35 194.60 186.20
 .8161 -  .8470  .7670  .6245 6  1/  1/ 344327ST 281.70 239.00 224.65 217.85 210.40 204.75 196.35
 .8471 -  .8780  .7970  .7495 6  5/ 10         344328ST 292.25 248.00 233.10 226.10 218.40 212.50 203.75
 .8781 -  .9090  .8260  .7495 6  5/ 10         344329ST 325.85 281.40 266.55 259.55 251.95 245.90 237.15
 .9091 -  .9410  .8550  .7495 8  5/ 10         344330ST 325.85 281.40 266.55 259.55 251.95 245.90 237.15
 .9411 -  .9720  .8850  .7495 8  5/ 10         344331ST 337.45 293.10 278.25 271.10 263.55 257.60 248.90
 .9721 - 1.0030  .9140  .8745 8  3/ 10  1/ 344332ST 337.45 293.10 278.25 271.10 263.55 257.60 248.90
1.0031 - 1.0660  .9430  .8745 8  3/ 10  1/ 344334ST 381.00 336.65 321.80 314.70 307.15 301.20 292.55
1.0661 - 1.1280 1.0020  .8745 8  7/ 11         344336ST 390.10 345.75 330.80 323.80 316.20 310.25 301.55
1.1281 - 1.1905 1.0610  .9995 8  7/ 11         344338ST 405.60 361.25 346.35 339.35 331.75 325.80 317.05
1.1906 - 1.2530 1.1200  .9995 8         11  1/ 344340ST 423.85 379.45 364.65 357.55 350.00 344.00 335.30
1.2531 - 1.3155 1.1780  .9995 8         11  1/ 344342ST 459.75 415.40 400.45 393.45 385.75 379.80 371.15
1.3156 - 1.3780 1.2370  .9995 8  1/ 12         344344ST 495.10 450.75 435.95 428.80 421.25 415.25 406.65
1.3781 - 1.4405 1.2960  .9995 8  1/ 12         344346ST 519.25 474.90 460.10 452.95 445.40 439.40 430.80
1.4406 - 1.5030 1.3550 1.2495 8  1/ 12  1/ 344348ST 543.60 499.40 484.45 477.45 469.85 463.90 455.15

Do you need special Step Type Reamers?

If you can't find the specific Step Type Reamers you are looking for we can manufacture it for you as a special. Simply fill out our Special Tool Quote Form and fax it back to us at 941-739-2827. You can also send us a message with your requirements through our Contact Us page. We will provide you with price and delivery for your special Step Type Reamers.

Thank you for using Lexington Cutter for your Step Type Reamers.