Accuhold Extension Holder 0.4375in ID, 0.75in Shank, 4.5in OAL, 5/16-24 Screw

This is the tightest tolerance end mill extension used to reach into parts that need longer length. Precision end mills need precision extension holders to eliminate runout (TIR) and reduce tool breakage.

PREVIEW AND DIAGRAM (ACH)

Specifications

Hole Dia 0.4375″
Shank Dia 0.75″
Overall Len 4.5″
Screw Size 5/16-24

Tolerances

Shank Diameter−.0001/−.0003″
Hole Diameter+.000/+.0001″
Overall Length±.060″

Catalog

Catalog Page 107

Speed & Feeds

Other Tools in this Series

Tool # Hole Dia Shank Dia Overall Len Screw Size Pg. #
ACH-030.0937″0.375″2.125″5-40107
ACH-040.125″0.375″3.25″8-32107
ACH-04-L0.125″0.375″6″8-32107
ACH-050.1562″0.5″3.5″8-32107
ACH-060.1875″0.5″3.5″8-32107
ACH-06-L0.1875″0.5″5″8-32107
ACH-080.25″0.625″4.25″10-32107
ACH-08-L0.25″0.625″6″10-32107
ACH-100.3125″0.75″4.5″1/4-28107
ACH-120.375″0.75″4.5″5/16-24107
ACH-12-L0.375″0.75″6″5/16-24107
ACH-160.5″0.75″4.75″3/8-24107
ACH-16L0.5″1″4.75″3/8-24107
ACH-16-32-L0.5″1″6″3/8-24107
ACH-180.5625″1″5.25″3/8-24107
ACH-200.625″1″5.5″3/8-24107
ACH-240.75″1″5.25″7/16-20107
ACH-24-1.250.75″1.25″6″7/16-20107
ACH-321″1″5.5″7/16-20107
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SPEEDS & FEEDS