INSERT (P/N MH4) - New Surplus

The MH4 is a threaded insert that provides durable internal threads for structural and systems attachments in aircraft panels. This steel insert reinforces attachment points where repeated fastening cycles or vibration would otherwise damage the base material. Installed using approved insert tooling per aircraft maintenance manuals, the MH4 conforms to NAS1394/1395 or MS51830–MS51832 specifications.

Commonly used in airframe panel assemblies, control surfaces, and equipment mounting applications where reliable threaded connections are essential. Verify applicability in your aircraft's Illustrated Parts Catalog before installation.

What is the INSERT (P/N MH4)?

The MH4 is a threaded insert that provides durable internal threads for structural and systems attachments in aircraft panels. This steel insert reinforces attachment points where repeated fastening cycles or vibration would otherwise damage the base material.

Does the MH4 meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The INSERT conforms to its applicable AN (Air Force-Navy), MS (Military Standard), or NAS (National Aerospace Standard) specification. Contact us for specific specification details.

What material is the MH4 manufactured from?

Aviation hardware is available in various materials including cadmium-plated steel, stainless steel, aluminum alloy, and titanium depending on the application. Contact us for material certification and specifications for the MH4.

Can I order the MH4 in custom quantities?

Yes, we sell hardware in various quantities from single units to bulk lots. The INSERT is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.