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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 $201.10 $158.55 $144.40 $137.55 $130.35 $124.65 $116.25
 .3151 -  .3470  .2960  .2792 4  1/         344311ST 212.95 170.40 156.10 149.45 142.10 136.45 128.10
 .3471 -  .3780  .3260  .3105 4  3/         344312ST 214.05 171.65 157.35 150.65 143.35 137.55 129.35
 .3781 -  .4090  .3550  .3105 4  3/         344313ST 219.85 177.30 163.15 156.30 149.10 143.35 135.05
 .4091 -  .4410  .3850  .3730 6  3/         344314ST 225.00 182.55 168.30 161.55 154.30 148.55 140.20
 .4411 -  .4720  .4150  .3730 6  3/         344315ST 233.95 191.45 177.25 170.45 163.25 157.45 149.15
 .4721 -  .5030  .4440  .4355 6                 344316ST 251.25 205.95 190.70 183.45 175.75 169.60 160.80
 .5031 -  .5340  .4730  .4355 6                 344317ST 255.90 210.55 195.45 188.25 180.45 174.35 165.50
 .5341 -  .5660  .5020  .4355 6                 344318ST 255.90 210.55 195.45 188.25 180.45 174.35 165.50
 .5661 -  .5970  .5320  .4355 6                 344319ST 260.75 215.55 200.40 193.15 185.35 179.25 170.40
 .5971 -  .6280  .5610  .5615 6  1/         344320ST 260.75 215.55 200.40 193.15 185.35 179.25 170.40
 .6281 -  .6590  .5900  .5615 6  1/         344321ST 266.15 221.00 205.65 198.50 190.70 184.60 175.75
 .6591 -  .6910  .6200  .5615 6  1/         344322ST 277.15 231.75 216.60 209.35 201.65 195.60 186.70
 .6911 -  .7220  .6500  .5615 6  1/         344323ST 279.95 234.65 219.45 212.25 204.45 198.30 189.55
 .7221 -  .7530  .6790  .6245 6  1/  1/ 344324ST 282.75 237.45 222.25 215.05 207.35 201.20 192.20
 .7531 -  .7840  .7080  .6245 6  1/  1/ 344325ST 287.85 242.55 227.35 220.15 212.40 206.30 197.40
 .7841 -  .8160  .7370  .6245 6  1/  1/ 344326ST 287.85 242.55 227.35 220.15 212.40 206.30 197.40
 .8161 -  .8470  .7670  .6245 6  1/  1/ 344327ST 298.55 253.35 238.15 230.95 223.00 217.00 208.10
 .8471 -  .8780  .7970  .7495 6  5/ 10         344328ST 309.80 262.90 247.10 239.70 231.50 225.25 216.00
 .8781 -  .9090  .8260  .7495 6  5/ 10         344329ST 345.40 298.25 282.50 275.10 267.05 260.70 251.35
 .9091 -  .9410  .8550  .7495 8  5/ 10         344330ST 345.40 298.25 282.50 275.10 267.05 260.70 251.35
 .9411 -  .9720  .8850  .7495 8  5/ 10         344331ST 357.70 310.65 295.00 287.35 279.35 273.05 263.85
 .9721 - 1.0030  .9140  .8745 8  3/ 10  1/ 344332ST 357.70 310.65 295.00 287.35 279.35 273.05 263.85
1.0031 - 1.0660  .9430  .8745 8  3/ 10  1/ 344334ST 403.90 356.85 341.10 333.60 325.55 319.25 310.10
1.0661 - 1.1280 1.0020  .8745 8  7/ 11         344336ST 413.50 366.45 350.70 343.30 335.15 328.85 319.60
1.1281 - 1.1905 1.0610  .9995 8  7/ 11         344338ST 429.95 382.95 367.15 359.75 351.60 345.30 336.05
1.1906 - 1.2530 1.1200  .9995 8         11  1/ 344340ST 449.25 402.20 386.55 379.00 371.00 364.65 355.40
1.2531 - 1.3155 1.1780  .9995 8         11  1/ 344342ST 487.35 440.30 424.50 417.05 408.95 402.65 393.40
1.3156 - 1.3780 1.2370  .9995 8  1/ 12         344344ST 524.80 477.75 462.15 454.60 446.55 440.15 431.05
1.3781 - 1.4405 1.2960  .9995 8  1/ 12         344346ST 550.40 503.35 487.70 480.15 472.15 465.80 456.60
1.4406 - 1.5030 1.3550 1.2495 8  1/ 12  1/ 344348ST 576.25 529.35 513.50 506.10 498.05 491.75 482.45

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.