Menu
STEP REAMER TYPE 3484 - STRAIGHT SHANK - LEFT SPIRAL FLUTE LONG CARBIDE - FOR STEEL
TYPE
Flute long carbide tips brazed to one piece hardened alloy steel bodies. Left spiral polished flutes. Available with cutting or non-cutting pilots.
Left spiral flutes should only be used on through holes and very hard materials. 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/         348410ST $214.50 $169.20 $154.05 $146.80 $138.95 $132.85 $124.05
 .3151 -  .3470  .2960  .2792 4  1/         348411ST 227.15 181.80 166.60 159.40 151.60 145.55 136.55
 .3471 -  .3780  .3260  .3105 4  3/         348412ST 228.40 183.00 167.95 160.65 152.90 146.80 137.85
 .3781 -  .4090  .3550  .3105 4  3/         348413ST 234.45 189.05 174.00 166.75 158.95 152.90 144.00
 .4091 -  .4410  .3850  .3730 6  3/         348414ST 239.95 194.65 179.50 172.35 164.55 158.50 149.60
 .4411 -  .4720  .4150  .3730 6  3/         348415ST 249.55 204.20 189.00 181.85 174.10 168.00 159.10
 .4721 -  .5030  .4440  .4355 6                 348416ST 257.95 211.45 195.80 188.45 180.45 174.25 165.05
 .5031 -  .5340  .4730  .4355 6                 348417ST 262.85 216.30 200.70 193.20 185.35 179.05 169.80
 .5341 -  .5660  .5020  .4355 6                 348418ST 262.85 216.30 200.70 193.20 185.35 179.05 169.80
 .5661 -  .5970  .5320  .4355 6                 348419ST 267.90 221.35 205.65 198.25 190.35 184.10 174.85
 .5971 -  .6280  .5610  .5615 6  1/         348420ST 267.90 221.35 205.65 198.25 190.35 184.10 174.85
 .6281 -  .6590  .5900  .5615 6  1/         348421ST 273.35 226.80 211.25 203.85 195.80 189.55 180.45
 .6591 -  .6910  .6200  .5615 6  1/         348422ST 284.55 238.00 222.45 215.05 207.00 200.75 191.65
 .6911 -  .7220  .6500  .5615 6  1/         348423ST 287.40 241.00 225.40 217.90 210.05 203.75 194.55
 .7221 -  .7530  .6790  .6245 6  1/  1/ 348424ST 290.35 243.75 228.20 220.85 212.85 206.55 197.45
 .7531 -  .7840  .7080  .6245 6  1/  1/ 348425ST 295.60 249.00 233.50 226.05 218.00 211.75 202.65
 .7841 -  .8160  .7370  .6245 6  1/  1/ 348426ST 295.60 249.00 233.50 226.05 218.00 211.75 202.65
 .8161 -  .8470  .7670  .6245 6  1/  1/ 348427ST 306.60 260.05 244.50 237.00 229.05 222.80 213.70
 .8471 -  .8780  .7970  .7495 6  5/ 10         348428ST 318.10 269.85 253.70 246.00 237.70 231.20 221.75
 .8781 -  .9090  .8260  .7495 6  5/ 10         348429ST 354.70 306.30 290.20 282.45 274.20 267.60 258.25
 .9091 -  .9410  .8550  .7495 8  5/ 10         348430ST 354.70 306.30 290.20 282.45 274.20 267.60 258.25
 .9411 -  .9720  .8850  .7495 8  5/ 10         348431ST 367.35 319.05 302.80 295.10 286.95 280.40 270.90
 .9721 - 1.0030  .9140  .8745 8  3/ 10  1/ 348432ST 367.35 319.05 302.80 295.10 286.95 280.40 270.90
1.0031 - 1.0660  .9430  .8745 8  3/ 10  1/ 348434ST 414.70 366.45 350.30 342.60 334.30 327.80 318.20
1.0661 - 1.1280 1.0020  .8745 8  7/ 11         348436ST 424.50 376.30 360.10 352.40 344.20 337.70 328.25
1.1281 - 1.1905 1.0610  .9995 8  7/ 11         348438ST 441.40 393.10 377.00 369.30 361.00 354.60 345.05
1.1906 - 1.2530 1.1200  .9995 8         11  1/ 348440ST 461.30 413.05 396.90 389.20 380.95 374.45 364.90
1.2531 - 1.3155 1.1780  .9995 8         11  1/ 348442ST 500.45 452.05 435.95 428.25 420.00 413.35 403.95
1.3156 - 1.3780 1.2370  .9995 8  1/ 12         348444ST 538.95 490.70 474.45 466.75 458.50 451.90 442.55
1.3781 - 1.4405 1.2960  .9995 8  1/ 12         348446ST 565.20 516.95 500.70 493.00 484.80 478.30 468.85
1.4406 - 1.5030 1.3550 1.2495 8  1/ 12  1/ 348448ST 591.85 543.40 527.15 519.55 511.30 504.75 495.40

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.