Helicopter Rotor Drive System Parts Listing

Are you looking to have helicopter rotor drive system parts and delivered it by today or tomorrow? Our team here at Unlimited NSN can help. Unlimited NSN is one of the leading U.S. distributors of helicopter rotor drive system parts and other new, old, or obsolete aviation parts, including MS27039C1-11, NAS1149D0316J, MS21042L04, MS21075L3E, C192-1. Owned and operated by ASAP Semiconductor, Unlimited NSN has sold 100 million parts to date. ASAP Semiconductor is an ISO 9001:2015 certified company with an FAA AC-056B accreditation, and is also a member of the Aviation Suppliers Association (ASA).

We are proud to offer an inventory of over two billion ready-to-ship aircraft and helicopter rotor drive system parts, 24/7 availability, and key locations in the United States, United Kingdom, and Canada. These attributes allow us to meet all aircraft on ground (AOG) requirements with ease. Use our optimized search engine to find your required helicopter rotor drive system parts then submit an instant RFQ for a quick, competitive quote. Here at Unlimited NSN, we make your purchasing process as simple and efficient as possible.


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Part No Description RFQ
MS27039C1-11 Screw RFQ
NAS1149D0316J Washer RFQ
MS21042L04 Nut RFQ
MS21075L3E Nutplate RFQ
C192-1 Spacer RFQ
C264-2 Housing RFQ
D210-3 Nut RFQ
A796-1 Shim (3 maximum per fwd pad) RFQ
C273-1 Roof RFQ
D796-1 Duct Assembly RFQ
C006-8* Main Rotor Gearbox and Mast Assembly RFQ
MS27039C0812 Screw RFQ
A215-382 O-Ring (use only with C263-2 sump) RFQ
C051-2 Actuator Assembly (28-volt ships) RFQ
A190-3 V-Belts (matched set of four banded belts) RFQ
D210-4 Nut RFQ
MS3367-5-9 Ty-Rap RFQ
B270-2 Sealant - Metal (silver) RFQ
D111-1 Bracket RFQ
C284-1 Tube Assembly - Swashplate RFQ
NAS1149F0463P Washer RFQ
B570-1 Magnet Assembly RFQ
B033-6 Knob Assembly - Rotor Brake RFQ
MS21042L6 Nut RFQ
C215-279 O-Ring (use only with C263-1 sump) RFQ
D126-1 Cable Assembly RFQ
A653-2* Mount (supersedes A653-1; if replacing a -1 mount replace both forward mounts) RFQ
31M22972* Engine Starter Ring Gear Assembly (supersedes LW-16471* and 31M21951* starter ring gear assembly used on O-540 engine) RFQ
D174-2R D174-2 Fanwheel Assembly (overhaul exchange) RFQ
D276-1 Gearmotor Assembly (14-volt ships) . RFQ
A938-5 Mount - Test Switches RFQ
C018 Clutch Assembly RFQ
C170-2 Sheave - Upper (anodized) RFQ
B263-15 Housing RFQ
D113-2 Link RFQ
A130-41 Spacer RFQ
C908-1 Yoke Assembly RFQ
C049-2 Harness Assembly RFQ
C018-3R C018-3 Clutch Assembly (overhaul exchange; includes new C166-4 shaft) RFQ
NAS1149FN816P Washer RFQ
NAS1352-08LE6P Screw RFQ
D276-3 Gearmotor Assembly (28-volt ships) . RFQ
B158-2 Heat Shrink RFQ
NAS6603-40 Bolt RFQ
D262-11 Fuse Holder RFQ
NAS1352-4-12 Screw RFQ
C146-5 Gear Set RFQ
A141-11 Washer RFQ
D123-1 Arm Assembly RFQ
E0240-037-3500S Spring RFQ
AS111 O-Ring RFQ
MS35206-219 Screw RFQ
D110-1 Arm Assembly - Upper RFQ
A185-3 Plate RFQ
C141-10 Washer RFQ
C018-2* Clutch Assembly RFQ
5541K11 Pipe Wrap (self-adhesive) RFQ
MS35206-228 Screw RFQ
NAS6606-31 Bolt RFQ
A938-3 Mount - Test Switches RFQ
F283-3 Mast Assembly RFQ
C167-3 Housing RFQ
B270-10 Adhesive RFQ
C130-3 Spacer RFQ
C191-5 Stop RFQ
D774-4 Spring (alternate part no. C0420-063-2000S) RFQ
B158-8 Heat Shrink (14-volt ships) RFQ
C553-1 Block RFQ
A215-029 O-Ring RFQ
NAS6605-38 Bolt RFQ
A7260 Chip Detector RFQ
NAS9301B-4-02 Rivet RFQ
C184-2 Bearing Assembly - Upper RFQ
A130-34 Spacer RFQ
R8206 C283-3 Mast Tube Upgrade Kit RFQ
NAS6603-10 Bolt RFQ
AN3-41A Bolt RFQ
V3-1001 Switch (use B158-2 or -3 around terminals) RFQ
A215-222 O-Ring RFQ
110-4 Telatemp (temperature recorder, 220°-270°F) RFQ
C493-1 Sheave - Lower RFQ
220-242400-09 Clip RFQ
NAS1149F0332P Washer RFQ
A257-19 Lubricant RFQ
C907-1 Yoke (shaft length - 2.76 in.) RFQ
B330-13 Palnut RFQ
AN316-5R Nut RFQ
AGC-1.5 Fuse (1.5 amp, for 28-volt ships) RFQ
C966-5 Seal RFQ
C006-8R* C006-8 Main Rotor Gearbox and Mast Assembly RFQ
A185-1 Bracket RFQ
C049-5 Harness Assembly - Overtemp Switch RFQ
NAS1149F2432P Washer RFQ
MS20995C41 0.041 in. dia. Safety Wire RFQ
B158-6 Heat Shrink (around fuse holder) RFQ
NAS6604-21 Bolt RFQ
C215-029 O-Ring (lubricate with A257-1 grease) RFQ
B033-6 Knob Assembly (includes knob and chain) RFQ
C007-5 Shaft and Bearing Assembly (Incl C181-3 lower bearing) RFQ
C182-1 Nut RFQ
C266-1 Spacer RFQ
C947-1 Flex Plate Assembly RFQ
MS24665-283 Cotter Pin RFQ
NAS1149F0532P Washer RFQ
A130-39 Spacer RFQ
B115-1 Bearing RFQ
NAS1149F0632P* Washer RFQ
C053-2 Switches Assembly RFQ
B263-1 Pin RFQ
C006-7* Main Rotor Gearbox and Mast Assembly RFQ
D214-2 Washer (install with counterbore toward journal) RFQ
D110-1 Arm Assembly RFQ
A215-156 O-Ring RFQ
NAS1149F0432P Washer (or NAS1149F0463P to fill gap) RFQ
C647-1 Bearing (main rotor shaft upper bearing) RFQ
NAS1149F0632P Washer RFQ
MS24665-134 Cotter Pin RFQ
D117-1 Guard RFQ
A257-4 Oil - Type “A” ATF (Dexron III) RFQ
B157-1 Mount RFQ
C966-3 Seal RFQ
D210-10 Nut RFQ
D774-4 Spring (Associated Spring part no. C0420-063-2000S) RFQ
NAS6608H42 Bolt RFQ
A215-042 O-Ring RFQ
AN960PD416L Washer RFQ
C049-4 Harness Assembly RFQ
C244-1 Bracket RFQ
D114-1 Bracket RFQ
B330-19 Palnut RFQ
C184-2R C184-2 Bearing Assembly - Upper (overhaul exchange) RFQ
MS20470AD4 Rivet RFQ
NAS6603-28 Bolt RFQ
MS20995C32 0.032 in. dia. Safety Wire RFQ
C007 Shaft and Bearing Assembly RFQ
C146-1 Gear Set RFQ
A215-017 O-Ring RFQ
01960 Bead Chain RFQ
D122-6 Plate RFQ
B158-8 Heat Shrink RFQ
C283-1 Mast Assembly RFQ
B566-1* Chip Detector RFQ
B049-3 Harness Assembly RFQ
A257-2 Oil - Gearbox (one-gallon bottle) RFQ
C168-4 Retainer RFQ
C257-2 Cover RFQ
C796-3 Spacer RFQ
NAS620-8 Washer RFQ
C051-1R C051-2 Actuator Assembly (overhaul exchange) RFQ
MS20002-24 Washer (against hub) RFQ
NAS6604-13 Bolt RFQ
MS21042L5 Nut RFQ
NAS6603-8 Bolt RFQ
C051-1R C051-1 Actuator Assembly (overhaul exchange) RFQ
B350-3 Spring Pin RFQ
A141-27 Washer RFQ
MS21042L08 Nut RFQ
B563-2 Sight Gage RFQ
A185-5 Bracket RFQ
C263-2 Sump (requires A215-222 o-ring) RFQ
NAS1149F1063P Washer RFQ
C166-4 Shaft - Clutch RFQ
B263-19* Housing RFQ
C018-3* Clutch Assembly RFQ
D174-2 Fanwheel Assembly RFQ
NAS1304-15 Bolt RFQ
B289-3 Screw RFQ
B161-4 Spirap RFQ
NAS6604-11 Bolt RFQ
A650-4 Fitting RFQ
B263-14 Housing (28-volt ships) RFQ
110-3 Telatemp (temperature recorder 180°-230°F) RFQ
D113-1 Link RFQ
C796-2 Shim (3 maximum per aft pad) RFQ
C648-2 Bearing - Journal RFQ
KI-202 Retainer Upgrade Kit RFQ
C130-4 Spacer RFQ
C967-1 Plug RFQ
C007-5R C007-5 Shaft and Bearing Assembly (overhaul exchange) RFQ
B125-2 Connector RFQ
C167-5 Housing RFQ
MS21042L4 Nut RFQ
C251-1 Shaft - Main Rotor Drive RFQ
C653-3* Mount RFQ
B330-16 Palnut RFQ
A141-21 Washer RFQ
NAS6606-5 Bolt RFQ
C184-2 Upper Bearing Assembly RFQ
C051-1 Actuator Assembly (14-volt ships) RFQ
012C O-Ring RFQ
B158-3 Heat Shrink (around wires, terminals) RFQ
C006-2 Rotor Brake Assembly RFQ
MS24566-1B Pulley (or AN210-1A) RFQ
B263-18* Housing RFQ
A267-1 Washer RFQ
D049-4 Harness Assembly RFQ
BP4100 Pulley RFQ
C006-1 or -3 Main Rotor Gearbox and Mast Assembly RFQ
MS20074-04-04 Bolt (earlier non-hydraulic R44s) RFQ
C273-1 Roof Panel RFQ

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