Propeller naming suffixes (E, SF, MR, P, W, N, C) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/apc-propeller-naming/  (sheet CC BY 4.0; files Xem Studio Design License, https://xemstudio.com/license/)
Basis: Design rules and figures from the cited sources; example geometry by Xem Studio
Catalog version: 2026-10-20

Sizes: see table below
- APC stamps diameter x pitch on the blade, followed by letters: E thin electric, F folding, MR multirotor, SF slow flyer, R reversible (all electric-only); W wide chord, N narrow, NN very narrow, P pusher/reverse rotation, C carbon (40% carbon / 60% nylon) (APC Nomenclature).
- No letters means a standard right-hand Sport prop for IC engines that can also be used on electric motors (APC).
- The file is a reference example built by Xem Studio from the numbers above. Sizes the sources do not fix are illustrative; scale the example to your own vehicle.

parameter  value or range  source
E / F / MR / SF / R  thin electric / folding / multirotor / slow flyer / reversible  APC Nomenclature
W / N / NN  wide / narrow / very narrow chord  APC Nomenclature
P  pusher (reverse rotation)  APC Nomenclature
C  40% carbon / 60% nylon by weight  APC Nomenclature
No suffix  standard right-hand Sport prop  APC Nomenclature

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- APC Propellers: APC Propeller Nomenclature — web — Publisher's page; dimensions are facts — https://www.apcprop.com/wp-content/uploads/2023/05/APC-Propeller-Nomenclature.pdf
- Model Aviation (AMA), J. Smith with APC Propellers: Common Questions with APC Propellers (Mar 2021) — web — Publisher's page; dimensions are facts — https://www.modelaviation.com/node/2115

Free files (Xem Studio Design License, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/apc-propeller-naming/index.json
API: https://xemstudio.com/api/geometry?object=apc-propeller-naming