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STEP REAMER TYPE 3442ST - STRAIGHT SHANK - RIGHT SPIRAL FLUTE LONG CARBIDE - FOR NON-FERROUS
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/         344210ST $201.10 $158.55 $144.40 $137.55 $130.35 $124.65 $116.25
 .3151 -  .3470  .2960  .2792 4  1/         344211ST 212.95 170.40 156.10 149.45 142.10 136.45 128.10
 .3471 -  .3780  .3260  .3105 4  3/         344212ST 214.05 171.65 157.35 150.65 143.35 137.55 129.35
 .3781 -  .4090  .3550  .3105 4  3/         344213ST 219.85 177.30 163.15 156.30 149.10 143.35 135.05
 .4091 -  .4410  .3850  .3730 6  3/         344214ST 225.00 182.55 168.30 161.55 154.30 148.55 140.20
 .4411 -  .4720  .4150  .3730 6  3/         344215ST 233.95 191.45 177.25 170.45 163.25 157.45 149.15
 .4721 -  .5030  .4440  .4355 6                 344216ST 251.25 205.95 190.70 183.45 175.75 169.60 160.80
 .5031 -  .5340  .4730  .4355 6                 344217ST 255.90 210.55 195.45 188.25 180.45 174.35 165.50
 .5341 -  .5660  .5020  .4355 6                 344218ST 255.90 210.55 195.45 188.25 180.45 174.35 165.50
 .5661 -  .5970  .5320  .4355 6                 344219ST 260.75 215.55 200.40 193.15 185.35 179.25 170.40
 .5971 -  .6280  .5610  .5615 6  1/         344220ST 260.75 215.55 200.40 193.15 185.35 179.25 170.40
 .6281 -  .6590  .5900  .5615 6  1/         344221ST 266.15 221.00 205.65 198.50 190.70 184.60 175.75
 .6591 -  .6910  .6200  .5615 6  1/         344222ST 277.15 231.75 216.60 209.35 201.65 195.60 186.70
 .6911 -  .7220  .6500  .5615 6  1/         344223ST 279.95 234.65 219.45 212.25 204.45 198.30 189.55
 .7221 -  .7530  .6790  .6245 6  1/  1/ 344224ST 282.75 237.45 222.25 215.05 207.35 201.20 192.20
 .7531 -  .7840  .7080  .6245 6  1/  1/ 344225ST 287.85 242.55 227.35 220.15 212.40 206.30 197.40
 .7841 -  .8160  .7370  .6245 6  1/  1/ 344226ST 287.85 242.55 227.35 220.15 212.40 206.30 197.40
 .8161 -  .8470  .7670  .6245 6  1/  1/ 344227ST 298.55 253.35 238.15 230.95 223.00 217.00 208.10
 .8471 -  .8780  .7970  .7495 6  5/ 10         344228ST 309.80 262.90 247.10 239.70 231.50 225.25 216.00
 .8781 -  .9090  .8260  .7495 6  5/ 10         344229ST 345.40 298.25 282.50 275.10 267.05 260.70 251.35
 .9091 -  .9410  .8550  .7495 8  5/ 10         344230ST 345.40 298.25 282.50 275.10 267.05 260.70 251.35
 .9411 -  .9720  .8850  .7495 8  5/ 10         344231ST 357.70 310.65 295.00 287.35 279.35 273.05 263.85
 .9721 - 1.0030  .9140  .8745 8  3/ 10  1/ 344232ST 357.70 310.65 295.00 287.35 279.35 273.05 263.85
1.0031 - 1.0660  .9430  .8745 8  3/ 10  1/ 344234ST 403.90 356.85 341.10 333.60 325.55 319.25 310.10
1.0661 - 1.1280 1.0020  .8745 8  7/ 11         344236ST 413.50 366.45 350.70 343.30 335.15 328.85 319.60
1.1281 - 1.1905 1.0610  .9995 8  7/ 11         344238ST 429.95 382.95 367.15 359.75 351.60 345.30 336.05
1.1906 - 1.2530 1.1200  .9995 8         11  1/ 344240ST 449.25 402.20 386.55 379.00 371.00 364.65 355.40
1.2531 - 1.3155 1.1780  .9995 8         11  1/ 344242ST 487.35 440.30 424.50 417.05 408.95 402.65 393.40
1.3156 - 1.3780 1.2370  .9995 8  1/ 12         344244ST 524.80 477.75 462.15 454.60 446.55 440.15 431.05
1.3781 - 1.4405 1.2960  .9995 8  1/ 12         344246ST 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/ 344248ST 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.