DM-6/DM-4 DiscMounts' mount head specification:
(All specifications are subject to change without notice.)

Azimuth axis (Tripod) mounting hole: 3/8"-16 centered on 6" disc

Altitude axis (Saddle) mounting holes:
DM-6: 5/16" - 18 spaced 3" apart centered on 6" disc
DM-4: 1/4 " - 20 spaced 3" apart centered on 4 " disc

Angle adaptor mounting holes: #10-32 spaced 1.5" apart

Material: All aluminum is 6061-T6 hard coat anodized and machined to close tolerance from sold blocks. All hardware, shafts, and ball bearings are made from stainless steel

Weight no accessories:

DM-6: 16.2 lbs.

DM-4: 5.2lbs

Dimensions:

DM-6 Head only: 7 1/2" long, 6" wide, 8 3/8" high

Height to center of Altitude disc: 5 1/2"

DM-4 Head only: 5 3/4" long, 4" wide, 5" high

Heigth to center of Altitude diec: 2 1/2"

Head Load weight:

DM-6: 40 lbs (load weight varies with diameter and length of tube)

DM-4: 18 lbs (load weight varies with diameter and length of tube)

Eyepiece/Camera deferential load weight to maintain balance (at end of focuser):

DM-6: 0 to 2.2 lbs. typical

DM-4: 0 to 1.5 lbs. typical

Please note this can change up or down depending on the telescope and the highest magnification required.

Ash Tripod:

Standard Ash wood Tripod: Height from ground to top of mounting plate

DM-6: 42.5" (For center of Altitude Axis: add 5")

DM-4: 42" (For center of Altitude Axis: add 2.5")

Closed length 47" long.

Natural oil, Red Mahogany stain with oil, or Walnut stain with oil

Tall Ash wood Tripod: Height from ground to top of mounting plate

DM-6: 51.5" (For center of Altitude Axis: add 5")

DM-4: 50" (For center of Altitude Axis: add 2.5")

Closed length 55.5 " long.

Natural oil, Red Mahogany stain with oil, or Walnut stain with oil

Top plate DM-6: 6" diameter with captive 3/8"-16 mounting knob. All aluminum is 6061T6 hard coat anodized, and machined to close tolerance from solid blocks. All hardware is made from stainless steel

Top plate DM-4: 4" diameter with 3/8"-16 mounting pin. All aluminum is 6061T6 hard coat anodized, and machined to close tolerance from sold blocks. All hardware is made from stainless steel

Legs: 3" wide, 1 1/4 thick, solid Ash non-adjustable

Maximum load weight including mount head: 40 lbs. (with spreader braces installed)

Leg spread circle stand Ash Wood Tripod: approximately 37" to 39" adjustable