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1/4-28 black hardened steel prop nut. Suitable for replacement of missing or damaged glow engine nuts. More than strong enough for electric power system prop adapters. Item is one nut. SKU Number: RRCPNUTH1428
1/4-28 Thread. Shape is round nose bullet spinner. OD: 1.25" (31.73mm). Length: 1.177" (29.9mm). 5/32 to 3/16" or 4mm music wire and 5/32 or 4mm Allen wrenches are ideal installation tools. Stock photo from Dubro. Item is 1 spinner nut only.
5/16-24 black hardened steel prop nut. Suitable for replacement of missing or damaged glow engine nuts. More than strong enough for electric power system prop adapters. Item is one nut.
5/16-24 Thread. Shape is round nose bullet spinner. OD: 1.25" (31.73mm). Length: 1.177" (29.9mm). 5/32 to 3/16" or 4mm music wire and 5/32 or 4mm Allen wrenches are ideal installation tools. Stock photo from Du-Bro. Item is 1 spinner nut only.
3/8-24 black hardened steel prop nut. Suitable for replacement of missing or damaged glow engine nuts. More than strong enough for electric power system prop adapters. Item is one nut.
5x0.8mm black hardened steel prop nut. Suitable for replacement of missing or damaged glow engine nuts. More than strong enough for electric power system prop adapters. Item is one nut.
6x1mm black hardened steel prop nut. Suitable for replacement of missing or damaged glow engine nuts. More than strong enough for electric power system prop adapters. Item is one nut.
8x1.25mm black hardened steel prop nut. Suitable for replacement of missing or damaged glow engine nuts. More than strong enough for electric power system prop adapters. Item is one nut.
SKU Number: RRCPNUTH08125
Engine Shaft Nuts
The shaft nut is what secures a propeller or spinner to the crankshaft of a model engine, so a correctly threaded, properly torqued nut is a small part with an important job. This category covers the common thread sizes and styles used on glow and fuel engines.
Thread Sizes
Nuts are offered in 1/4-28 and 5/16-24 threads, the two sizes that fit most model engine crankshafts. Matching the nut thread to your engine's shaft is the first thing to check when replacing one.
Steel and Aluminum Styles
Hardened steel hex nuts in a black finish give a strong, durable hold, while aluminum spinner and hex nuts, including a Du-Bro 5/16-24 option, save a little weight and suit setups using a matching spinner. The style you choose often follows the spinner or prop adapter already on the engine.
Find the thread size and nut style your engine needs in the listings below.
 "1/4-28 Engine Shaft Nut Aluminum Spinner")
 "5/16-24 Engine Shaft Nut Hardened Steel Hex Black")
 "Du-Bro 5/16-24 Engine Shaft Nut Aluminum Spinner")
 "3/8-24 Engine Shaft Nut Hardened Steel Hex Black")
 "5x0.8mm Engine Shaft Nut Hardened Steel Hex Black")
 "6x1mm Engine Shaft Nut Hardened Steel Hex Black")