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MAH-10

Precision Extension Holder for Metric Size End Mill with Metric Shank

Accuhold End Mill Extension Holder 10mm ID, 20mm OD, 135mm OAL

OrderingMAH-10·Uncoated·$368.05

Precision Extension Holder for Metric Size End Mill with Metric Shank — MAH-10
Series photo — representative of the MAH family
ACH extension holder dimension diagram showing overall length, shank diameter and hole diameter for straight and stepped-head styles
Dimension reference — labels match the specifications below
Speeds & FeedsDialed to this exact tool — free
RobbJack ACH Accuhold ultra precision end mill extension holder with set screws

Accuhold ultra-precision end mill extension holders — +.00015"/-0 hole tolerance to eliminate runout and tool breakage.

  • Hole diameter tolerance +.00015"/-.00000 — the tightest-tolerance end mill extension, made to eliminate runout (TIR) and reduce tool breakage
  • Reaches into deep parts: standard lengths 2-1/8" to 6-1/2" including -L long versions (ACH-04-L, ACH-06-L, ACH-08-L, ACH-12-L, ACH-16-32-L)
  • Inch ACH line holds 3/32" to 1" tool shanks on 3/8" to 1-1/4" holder shanks
  • ACH-M metric-to-inch line holds 3mm to 25mm tool shanks on inch holder shanks — converts an inch tool holder to metric tooling
  • MAH all-metric line: 3-12mm holes on 10-25mm shanks, 82.5-150mm OAL
  • Set screw sizes from 5-40 up to 7/16-20 matched to each holder
  • Large sizes use stepped heads: ACH-16/M12 have a 1" dia x 1.5" head; ACH-24/32 and ACH-M18/M25 have 1-1/4" dia x 2-1/4" heads with 2" hole depth
  • Shank tolerance -.0001/-.0003, OAL +/-.060

From the RobbJack Applications Guide.

About this series

MAH Precision Extension Holders for Metric End Mills

Precision extension reach for metric-shank end mills

The MAH is a precision extension holder for metric-size end mills, the metric counterpart to the ACH Accuhold. Hole diameters range from 3 mm to 12 mm on metric shanks with overall lengths from 82.5 mm to 150 mm.

  • Precision extension holder for metric end mills
  • Hole Dia. tolerance +.004/-.000 mm
  • Shank Dia. tolerance +.000/-.007 mm
  • OAL tolerance +/-1.5 mm

Holds metric-shank end mills; MAH-12 has a 1" diameter x 1.5" long head

Headline spec

Metric hole diameters 3 mm-12 mm; metric shanks; 82.5 mm to 150 mm OAL

Best for

  • Reaching into parts that need longer length
  • Extending precision metric end mills while maintaining low runout

Specifications

US machining terms with ISO 13399 codes.

Holder DiameterDMM
0.7874″
Accessory Type
Extension Holder
Overall Length (OAL)OAL
5.315″
Series
MAH — Precision Extension Holder for Metric Size End Mill with Metric Shank

See it run

Tolerances

TypeMinMax
Hole Diameter0+0.004
Overall Length-1.5+1.5
Shank Diameter-0.0070

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Uncoated · your price$368.05

Part MAH-10

Made & shipped in the USA · lead time confirmed at order. Test this tool in your spindle at retail, or get it through your RobbJack distributor.

Performance guaranteed. Run it against the tool you use today — if it doesn't beat it, we'll make it right.

Adds MAH-10 · Uncoated · $368.05

Calculate Speeds & FeedsDownload ISO 13399 data (.csv)

Uncoated

$368.05

MAH-10

More in the MAH series

Same series, different size — what changes from this tool is shown in red.