MAH-06
Precision Extension Holder for Metric Size End Mill with Metric Shank
Accuhold End Mill Extension Holder 6mm ID, 16mm OD, 125mm OAL



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
- 0.6299″
- Accessory Type
- Extension Holder
- Overall Length (OAL)OAL
- 4.9213″
- Series
- MAH — Precision Extension Holder for Metric Size End Mill with Metric Shank
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Tolerances
| Type | Min | Max |
|---|---|---|
| Hole Diameter | 0 | +0.004 |
| Overall Length | -1.5 | +1.5 |
| Shank Diameter | -0.007 | 0 |
Made & shipped in the USA · lead time confirmed at order. Buy at retail or through your distributor.
Performance guaranteed. Run it against the tool you use today — if it doesn't beat it, we'll make it right.
Adds Uncoated · $283.30 — our pick for your material. Choose another finish below.
Proven in the field
- $548,290saved per year drilling carbon-fiber aircraft
- $216,000saved per year trimming aircraft skins
- 1,000%metal-removal increase in Inconel 718 (SPS)
Finishes (1)
Uncoated
MAH-06
$283.30
Available to order
Starting at
$283.30
Performance guaranteed
More in the MAH series
Same series, different size — what changes from this tool is shown in red.