Which item is used for inaccessible locations and riveted into place?

Which item is used for inaccessible locations and riveted into place?

• A. Plate Nut
• B. Nuts
• C. Rivet
• D. Castellated

Answer: (A)

Inaccessible locations require a nut that stays fixed in place so you can screw a bolt into it from the accessible side. A plate nut is designed for this. It’s a small plate with a threaded bore that can be riveted (or welded) to the surface, creating a permanent, captive threaded hole. Once installed, bolts can be threaded in from the opposite side without needing access behind the panel. This makes plate nuts ideal for thin sheets or hard-to-reach assemblies where holding a nut behind the surface isn’t possible. Regular nuts can’t be fixed in place in a back-side inaccessible area without a backing, so they aren’t suitable. A rivet by itself provides no internal threads, so it won’t accept a bolt. Castellated nuts are used with a pin to prevent rotation and aren’t riveted into place to create a threaded hole in the first place.

Inaccessible locations require a nut that stays fixed in place so you can screw a bolt into it from the accessible side. A plate nut is designed for this. It’s a small plate with a threaded bore that can be riveted (or welded) to the surface, creating a permanent, captive threaded hole. Once installed, bolts can be threaded in from the opposite side without needing access behind the panel. This makes plate nuts ideal for thin sheets or hard-to-reach assemblies where holding a nut behind the surface isn’t possible.

Regular nuts can’t be fixed in place in a back-side inaccessible area without a backing, so they aren’t suitable. A rivet by itself provides no internal threads, so it won’t accept a bolt. Castellated nuts are used with a pin to prevent rotation and aren’t riveted into place to create a threaded hole in the first place.