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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 $180.65 $142.45 $129.70 $123.60 $117.10 $112.00 $104.45
 .3151 -  .3470  .2960  .2792 4  1/         344311ST 191.30 153.10 140.30 134.25 127.70 122.55 115.10
 .3471 -  .3780  .3260  .3105 4  3/         344312ST 192.35 154.20 141.40 135.30 128.80 123.60 116.20
 .3781 -  .4090  .3550  .3105 4  3/         344313ST 197.55 159.30 146.60 140.50 133.90 128.80 121.30
 .4091 -  .4410  .3850  .3730 6  3/         344314ST 202.25 164.00 151.20 145.10 138.60 133.50 126.00
 .4411 -  .4720  .4150  .3730 6  3/         344315ST 210.20 172.00 159.25 153.15 146.65 141.45 134.00
 .4721 -  .5030  .4440  .4355 6                 344316ST 225.75 185.00 171.35 164.85 157.90 152.40 144.50
 .5031 -  .5340  .4730  .4355 6                 344317ST 229.95 189.20 175.65 169.10 162.10 156.65 148.70
 .5341 -  .5660  .5020  .4355 6                 344318ST 229.95 189.20 175.65 169.10 162.10 156.65 148.70
 .5661 -  .5970  .5320  .4355 6                 344319ST 234.30 193.70 180.05 173.55 166.55 161.05 153.10
 .5971 -  .6280  .5610  .5615 6  1/         344320ST 234.30 193.70 180.05 173.55 166.55 161.05 153.10
 .6281 -  .6590  .5900  .5615 6  1/         344321ST 239.10 198.50 184.80 178.35 171.35 165.90 157.90
 .6591 -  .6910  .6200  .5615 6  1/         344322ST 249.00 208.25 194.60 188.15 181.25 175.70 167.70
 .6911 -  .7220  .6500  .5615 6  1/         344323ST 251.50 210.75 197.20 190.70 183.75 178.20 170.30
 .7221 -  .7530  .6790  .6245 6  1/  1/ 344324ST 254.05 213.35 199.65 193.20 186.25 180.75 172.75
 .7531 -  .7840  .7080  .6245 6  1/  1/ 344325ST 258.60 217.90 204.25 197.80 190.80 185.35 177.30
 .7841 -  .8160  .7370  .6245 6  1/  1/ 344326ST 258.60 217.90 204.25 197.80 190.80 185.35 177.30
 .8161 -  .8470  .7670  .6245 6  1/  1/ 344327ST 268.25 227.55 213.90 207.50 200.40 195.00 186.95
 .8471 -  .8780  .7970  .7495 6  5/ 10         344328ST 278.40 236.20 221.95 215.30 207.95 202.35 194.05
 .8781 -  .9090  .8260  .7495 6  5/ 10         344329ST 310.30 268.05 253.90 247.15 239.95 234.20 225.90
 .9091 -  .9410  .8550  .7495 8  5/ 10         344330ST 310.30 268.05 253.90 247.15 239.95 234.20 225.90
 .9411 -  .9720  .8850  .7495 8  5/ 10         344331ST 321.35 279.15 265.00 258.25 251.00 245.35 237.10
 .9721 - 1.0030  .9140  .8745 8  3/ 10  1/ 344332ST 321.35 279.15 265.00 258.25 251.00 245.35 237.10
1.0031 - 1.0660  .9430  .8745 8  3/ 10  1/ 344334ST 362.90 320.60 306.45 299.75 292.55 286.85 278.60
1.0661 - 1.1280 1.0020  .8745 8  7/ 11         344336ST 371.55 329.30 315.05 308.40 301.15 295.45 287.20
1.1281 - 1.1905 1.0610  .9995 8  7/ 11         344338ST 386.25 344.05 329.85 323.20 315.90 310.25 301.90
1.1906 - 1.2530 1.1200  .9995 8         11  1/ 344340ST 403.70 361.40 347.25 340.55 333.35 327.65 319.35
1.2531 - 1.3155 1.1780  .9995 8         11  1/ 344342ST 437.85 395.55 381.45 374.70 367.45 361.75 353.50
1.3156 - 1.3780 1.2370  .9995 8  1/ 12         344344ST 471.50 429.30 415.15 408.40 401.15 395.50 387.25
1.3781 - 1.4405 1.2960  .9995 8  1/ 12         344346ST 494.55 452.25 438.20 431.40 424.20 418.55 410.25
1.4406 - 1.5030 1.3550 1.2495 8  1/ 12  1/ 344348ST 517.70 475.60 461.35 454.70 447.45 441.75 433.45

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.