Metric Heavy Duty & Thickwall Keensert® Style Key Locking Inserts in 4140 Alloy Steel – NA0150 – KNHM-MX Series

Looking for Metric Heavy Duty & Thick Wall 4140 Alloy Steel Key Locking Inserts (NA0150)?

The metric Heavy Duty & Thickwall (KNHM-MX) Keensert® style threaded insert series, crafted from 4140 alloy steel and compliant with NA0150 standards, stands out for its remarkable toughness and load-bearing capacity. 4140 alloy steel is renowned for its superior strength, fatigue resistance, and impact durability, making this insert ideal for heavy-duty machinery and aerospace applications where components must endure extreme stress and continuous use without failure. What sets the KNHM-MX series apart is its ability to withstand high-impact loads and harsh operational conditions, making it indispensable in scenarios such as construction equipment, aircraft landing gear, or industrial machinery used in mining and oil drilling. The 4140 alloy’s durability ensures that these inserts maintain their thread integrity even in environments where other materials might crack or fail under intense pressure. In addition, their compliance with NA0150 standards guarantees that these metric inserts meet the stringent performance, safety, and reliability requirements essential for mission-critical threading applications.

At MF Supply, we offer metric Heavy Duty and Thickwall KNHM-T metric Keensert® style key locking inserts — adhering to standard NA0150 — in both locking and non-locking styles, including major brands and equivalents to Acme, Alcoa, Camloc, Clarendon, Fairchild, Kaynar, Microdot and Tridair Keenserts®, & Keyserts. Our mil-spec and certified products are DFAR compliant with COC and full certifications available upon request.

Stock sizes include M4 through M24 in 4140 Alloy Steel.

Scroll down to find your size, or search by part number.

Add to Cart and buy online or email us for a custom quote. Most popular products are in stock and ship within 24 hours.

Can't find what you're looking for? Email us at [email protected] for a custom quote. "We have the right screw for you" is our motto after all!