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	Interchangable Counterbores and Pilots  E-mail this product to a friend previous | up | next
Short Series Three Flute, Straight Shank Three Flute, Taper Shank COUNTERBORES Counter- Bore Size Pilot Hole Size Range of Pilot Sizes No. of Flutes Overall Length Straight Shank Taper Shank Shank Dia. EDP No. Morse Taper No. EDP No. 3/16 3/32 1/8 - 5/32 3 3-1/2 15/64 316272 — — 7/32 3/32 1/8 - 3/16 3 3-5/8 15/64 316273 — — 15/64 3/32 1/8 - 3/16 3 3-5/8 15/64 316274 — — 1/4 3/32 1/8 - 3/16 3 3-13/16 15/64 316275 1 316328 17/64 3/32 1/8 - 3/16 3 3-13/16 17/64 316276 — — 9/32 3/32 1/8 - 7/32 3 3-13/16 17/64 316277 1 316329 19/64 3/32 1/8 - 7/32 3 3-13/16 17/64 316278 — — 5/16 3/32 1/8 - 1/4 3 3-13/16 19/64 316279 1 316330 11/32 3/32 1/8 - 9/32 3 3-13/16 5/16 316280 1 316331 3/8 5/32 3/16 - 5/16 3 4-1/16 5/16 316281 1 316332 25/64 5/32 3/16 - 5/16 3 4-1/16 3/8 316282 — — 13/32 5/32 3/16 - 11/32 3 4-1/16 3/8 316283 1 316333 7/16 5/32 3/16 - 3/8 3 4-1/16 3/8 316284 1 316334 15/32 3/16 1/4 - 13/32 3 4-5/16 7/16 316285 1 316335 31/64 3/16 1/4 - 7/16 3 4-5/16 7/16 316286 — — 1/2 3/16 1/4 - 7/16 3 4-5/16 7/16 316287 1 316336 17/32 3/16 1/4 - 15/32 3 4-5/16 1/2 316288 1 316337 9/16 3/16 1/4 - 1/2 3 4-5/16 1/2 316289 1 316338 37/64 3/16 1/4 - 1/2 3 5-1/8 1/2 316290 — — 19/32 3/16 1/4 - 17/32 3 5-1/8 1/2 316291 2 316339 5/8 3/16 1/4 - 9/16 3 5-1/8 1/2 316292 2 316340 41/64 3/16 1/4 - 9/16 3 5-1/8 1/2 316293 — — 21/32 3/16 1/4 - 19/32 3 5-1/8 1/2 316294 2 316341 11/16 3/16 1/4 - 5/8 3 5-1/8 1/2 316295 2 316342 23/32 1/4 5/16 - 21/32 3 5-3/8 1/2 316296 2 316343 3/4 1/4 5/16 - 11/16 3 5-3/8 1/2 316297 2 316344 25/32 1/4 5/16 - 23/32 3 5-3/8 5/8 316298 2 316345 13/16 1/4 5/16 - 3/4 3 5-3/8 5/8 316299 2 316346 27/32 1/4 5/16 - 25/32 3 5-3/8 3/4 316300 2 316347 7/8 1/4 5/16 - 13/16 3 5-3/8 3/4 316301 2 316348 29/32 1/4 5/16 - 27/32 3 6-1/8 3/4 316302 3 316442 15/16 1/4 5/16 - 7/8 3 6-1/8 3/4 316303 3 316443 31/32 5/16 3/8 - 15/16 3 6-3/8 3/4 316304 3 316444 1 5/16 3/8 - 15/16 3 6-3/8 3/4 316305 3 316445 1-1/16 5/16 3/8 - 1 3 6-3/8 3/4 316306 3 316446 1-1/8 5/16 3/8 - 1-1/16 3 6-3/8 1 316307 3 316447 1-3/16 5/16 3/8 - 1-1/8 3 6-3/8 1 316308 3 316448 1-1/4 3/8 7/16 - 1-3/16 5 6-5/8 1 316309 3 316449 1-5/16 3/8 7/16 - 1-1/4 5 6-5/8 1 316310 3 316450 1-3/8 3/8 7/16 - 1-5/16 5 6-5/8 1 316311 3 316451 1-7/16 3/8 7/16 - 1-3/8 5 7-7/8 1-1/4 316312 4 316452 1-1/2 3/8 7/16 - 1-7/16 5 7-7/8 1-1/4 316313 4 316453 1-5/8 7/16 1/2 - 1-9/16 5 8-1/8 1-1/4 316314 4 316454 1-11/16 7/16 1/2 - 1-5/8 5 8-1/8 1-1/4 316315 4 316455 1-3/4 7/16 1/2 - 1-11/16 5 8-1/8 1-1/4 316316 4 316456 1-13/16 7/16 1/2 - 1-3/4 5 8-1/8 1-1/2 316317 4 316457 1-7/8 7/16 1/2 - 1-13/16 5 8-1/8 1-1/2 316318 4 316458 2 1/2 9/16 - 1-15/16 5 8-3/8 1-1/2 316319 4 31659 2-1/8 1/2 9/16 - 2-1/16 5 9-7/8 1-1/2 316320 5 316460 2-1/4 1/2 9/16 - 2-3/16 5 9-7/8 1-1/2 316321 5 316461 2-3/8 1/2 9/16 - 2-5/16 5 9-7/8 1-1/2 316322 5 316462 2-1/2 1/2 9/16 - 2-7/16 5 9-7/8 1-1/2 316323 5 316463 2-5/8 1/2 9/16 - 2-9/16 5 9-7/8 1-3/4 316324 5 316464 2-3/4 1/2 9/16 - 2-11/16 5 9-7/8 1-3/4 316325 5 316465 2-7/8 1/2 9/16 - 2-13/16 5 9-7/8 1-3/4 316326 5 316466 3 1/2 9/16 - 2-15/16 5 9-7/8 1-3/4 316327 5 316467 PILOTS Pilot Dia. EDP No. - Shank Diameter 3/32 1/8 5/32 3/16 1/4 5/16 3/8 7/16 1/2 1/8 308468 308476 — — — — — — — 5/32 308469 308477 308490 — — — — — — 3/16 308470 308478 308491 308500 — — — — — 7/32 308471 308479 308492 308501 — — — — — 1/4 308472 308480 308493 308502 — — — — — 9/32 308473 308481 308494 308503 308522 — — — — 5/16 308474 308482 308495 308504 308523 — — — — 11/32 308475 308483 308496 308505 308524 308543 — — — 3/8 — 308484 308497 308506 308525 308544 — — — 13/23 — 308485 308498 308507 308526 308545 308568 — — 7/16 — 308486 308499 308508 308527 308546 308590 — — 15/32 — 308487 — 308509 308528 308547 308570 — — 1/2 — 308488 — 308510 308529 308548 308571 308595 — 17/32 — — — 308511 308530 308549 308572 308596 308623 9/16 — 308489 — 308512 308531 308550 308573 308597 308624 19/32 — — — 308513 308532 308551 308574 308598 308625 5/8 — — — 308514 308533 308552 308575 308599 308626 21/32 — — — 308515 308534 308553 308576 308600 308627 11/16 — — — 308516 308535 308554 308577 308601 308628 23/32 — — — — 308536 308555 308578 308602 308629 3/4 — — — 308517 308537 308556 308579 308603 308630 25/32 — — — 308518 308538 308557 308580 308604 — 13/16 — — — — 308539 308558 308581 308605 308631 27/32 — — — — 308540 308559 308582 — — 7/8 — — — 308519 308541 308560 308583 308606 308632 29/32 — — — — 308542 308561 308584 — — 15/16 — — — 308520 — 308562 308585 308607 308633 31/32 — — — — — 308563 308586 — — 1 — — — 308521 — 308564 308587 308608 308634 1-1/16 — — — — — 308565 308588 308609 308635 1-1/8 — — — — — 308566 308589 308610 308636 1-3/16 — — — — — 308567 308590 308611 308637 1-1/4 — — — — — — 308591 308612 308638 1-5/16 — — — — — — 308592 308613 308639 1-3/8 — — — — — — 308593 308614 308640 1-7/16 — — — — — — 308594 308615 308641 1-1/2 — — — — — — — 308616 308642 1-9/16 — — — — — — — 308617 308643 1-5/8 — — — — — — — 308618 308644 1-11/16 — — — — — — — 308619 308645 1-3/4 — — — — — — — 308620 308646 1-13/16 — — — — — — — 308621 308647 1-7/8 — — — — — — — 308622 308648 1-15/16 — — — — — — — — 308649 2 — — — — — — — — 308650 Pilots of different diameters can be used with each counterbore.
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