"FCH works great when looking for that hard to find part. Use it all the time! "
Michael RicardU Turn Fastener
FCH Member Advertisement
Top Locking Nuts
Automation-Style Lock Nuts, Top Locking Lock Nuts or Stover Lock Nuts are lock nuts with a locking feature deformed into the top of the nut. This deformation crimps the internal thread, increasing its friction against the mating bolt or stud, leading to the locking feature.
Top Locking Nuts Diameters
Top Locking Nuts are available on the FCH Network with Imperial/US diameters that range from #00 to 6 and with Metric diameters that range from M1 to M60.
Click on the diameters below to view or Search All Top Locking Nuts
Top Locking Nuts Materials
Top Locking Nuts are available on the FCH Network in materials that range from Steel to Fiber
Click on the materials below to view or Search All Top Locking Nuts
- Class 10.9
- Class 12.9
- 300 Stainless (A1,A2, 18-8,304,310 etc.)
- 316, 317, A4 Stainless
- 400 Stainless (405, 410,416,420,430 etc.)
- Duplex Stainless (2205, Ferralium etc.)
- Ni-Cu Alloy (Monel, K-Monel, etc.)
- Superalloy (Inconel, Hastelloy, Alloy 20)
- Titanium
- Aluminum
- Brass
- Silicon Bronze
- Iron
- Nylon (Polyamide)
- Rubber, Buna-N, Neoprene etc.
- Fiber
Top Locking Nuts Finishes
Top Locking Nuts are available on the FCH Network in finishes or coatings that range from Plain to Silver
Click on the finishes below to view or Search All Top Locking Nuts