CC-SERVO-DS-hitec-hs311 rev A Size datasheet - hitec-hs311
'?) CommunityCAD
Hitec HS-311 standard servo
Size datasheet: this size's values with their levels, conventions and sources.
For standard servo mounts, brackets, robot arms and RC models
Part key rc- servos -hitec-hs311
Files 1 STEP AP214 (simplified)
hitec-hs311, top, 0.75:1 hitec-hs311, side, 0.5:1 (hidden lines dashed)
Sym. Dimension Value
L Case length 40
W Case width > He Case height 36.5 pet E Ear span 52.8 Pp et | He Ear height 26.5 pea | te Ear thickness 2.5 po A Mounting hole spacing 47.8 pea b Hole spacing across 10.2 pea | dh Mounting hole diameter 4. ‘ a xo Output position 13. ia xf Output position, far ear 33. i ds Output spline diameter > zs Output spline teeth 2 hh Horn top above the case ‘5 hu Horn clearance over ears 12.0 poe lw Lead length (not modeled) 300.0 Poa te Connector length (not modeled) 14.0 pa
Modeled value: nominal, else the midpoint of min-max. < / 2: only that limit is given. * amber: one source (LO). c: a source value was corrected. Level - independent sources.
No published standard: each maker's own drawing Page 1/2 RC servo - hitec-hs311 - Dimensions in mm - CC-BY 4.0, lronPixel Labs LLC spec 7c5f93bb2a1674fad1ed142d21f252056a66a74e
Modeled from cited sources; not certified. Found an error? Use the feedback section on the part page.
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CC-SERVO-DS-hitec-hs311 rev A Size datasheet - hitec-hs311
'?) CommunityCAD
Conventions
e Each servo its maker's drawing: No published standard: every value of a servo is its maker's own drawing or specification (L2, one lineage); where one maker's documents differ, the current drawing. Hitec's image drawings were read twice by readers shown only the drawings.
« Output: A plain boss, not a spline: the maker's stated spline diameter where it gives one, else 0.3 W across; 0.5 of the maker's drawn horn top above the case high, with a screw hole in its top. Horns and spline teeth are not modeled.
« Case: Three black parts (bottom cover, middle with the ears, gear cover) at house seam heights, a raised round housing round the output (and a second, smaller boss on a micro servo), chamfered vertical edges and seams, the ears' rounded corners and slot, four case screw recesses in the base. Illustrative, checked for fit only.
« Lead and label: A short lead stub through a strain relief at the end away from the output, no connector; the stated lead and connector lengths are on the page, not modeled. A label recessed in the +Y side with the CommunityCAD mark. Illustrative.
Sources Source Publisher Retrieved sha256 hitec-hs311 Hitec (Digi-Key copy) 2026-11-05 e19a72e4d139 hitec-hs311-spec-jp Hitec RCD Japan 2026-11-06 8c5a558ae124 hitec-hs311-drawing Hitec RCD USA 2026-11-06 #8b6aab54438 hitec-hs311-product Hitec RCD USA 2026-11-06 760ef7Fc6e63
The whole series (verification map, corrections, drawings): CC- SERVO-DS.
No published standard: each maker's own drawing Page 2/2 RC servo - hitec-hs311 - Dimensions in mm - CC-BY 4.0, lronPixel Labs LLC spec 7c5f93bb2a1674fad1ed142d21f252056a66a74e
Modeled from cited sources; not certified. Found an error? Use the feedback section on the part page.