HOW THEY WORK

The molded Greer nylon insert is the locking element in Greer locknuts. The internal diameter of the insert is a computer-determined degree smaller than the bolt thread and the external diameter is large enough to fit tightly under a rolled over, crimped metal collar.

The resiliency of Greer's nylon collar prevents the threads of the bolt from cutting the collar. The bolt threads become impressed into the nylon forming a tight grip and preventing the nut from rotating free, even under severe shock and vibration.

Note that the driving torque creates a degree of metal-to-metal thread engagement along the upper flanks of the threads as the bolt is started into the nut. No matter how severe the vibration, the nylon collar exerts constant pressure against the threads on the bolt...not only where the bolt is engaged with the nylon, but along the entire metal-to-metal thread engagement. As the bolt enters the nylon, a downward pressure is created. The pressure forces the nut axially downward until the thread flanks of the nut and bolt are in close frictional contact. Thus locking occurs along the entire length of the threads.

• 1. 1660 Minature
• 2. NM/N E-Light Regular Height
• 3. NMJ-Aluminium High Strength Regular     Height
• 4. NMC/NEC - Light Castellated Regular Height
• 5. N1260 - Heavy Duty "U-Bolt"
• 6. NTM/NTE - Light Thin Height
• 7. NCHFMA - Clinch Minature Flush Mounting
  
  

• 8. ND - Spine
• 9. NU- Heavy Regular Height
• 10. NTU - Heavy Thin Height
• 11. NTMC/NTEC - Light Castellated Thin       Height
• 12. N7582 -Light High Strength Regular       Height
• 13. NTMJ- Aluminum High Strength Thin        Height
• 14. NC - Clinch

HOW THEY'RE MADE

Greer's green nylon insert collar is completely unaffected by most organic acids, oils, greases and common solvents and mineral acids. In service, Greer's nylon insert is subjected to the highly abrasive action of mating fasteners with nicked threads, together with the normal application of high impact loads.

Greer Nylon Insert Locknuts are available in a variety of finishes, platings and materials to meet the demands of the most rigid applications. All Greer nylon insert locknuts meet MS, MIL, AN, and NAS specs.