Flexible Top Lock Nut, 5/16"-18, Steel, Grade 2, Cadmium Plated, 7/64 in Ht, 50 PK MPN:21FA-518
Flexible Top Lock Nut, 5/16"-18, Steel, Grade 2, Cadmium Plated, 7/64 in Ht, 50 PK
The Flexible Top Lock Nut from Flexloc is a reliable and versatile fastening solution for a wide range of applications. Made from grade 2 steel and cadmium plated for corrosion resistance, this lock nut can withstand extreme temperatures from -70 to 1200 degrees F. Its flexible top design allows for easy installation and removal, making it ideal for use in industries such as aerospace, automotive, and construction. The lock nut's 5/16-18 thread size and heavy hex design ensure a secure fit in a variety of threaded applications, including those where high torque is required.
Top product features:
- Flexible design allows the nut to be easily removed and reinstalled
- Cadmium plating provides corrosion resistance
- Heavy hex design provides a secure and stable fit in tight spaces
Top product applications:
- High-temperature applications such as heat exchangers and combustion systems
- Industrial equipment mounting and securing
- Aerospace and defense industry applications requiring high strength and corrosion resistance
Lock Nut, Finish Cadmium-Plated, Material Steel, Material Grade/Class Grade 2, Thread Size 5/16 In.-18, Hex Width 9/16 in, Hex Height 7/64 in, Lock Type Flex Top, Dimensional Standards MIL-S-7742, NASM25027, System of Measurement Inch, Hex Type Heavy Hex, Thread Direction Right Hand, Industry Standards Not Applicable, Maximum Temperature 1,200 Degrees F, Minimum Temperature -70 Degrees F, Pack Size Small Pack, Removable Yes, Resistance Properties Impact-Resistant, Thread Fit 2B
Additional Information
- Country of Origin: US
- Drop Ship Item: No
- Blind Ship Eligible: No
- LTL Freight Required: No
- Lead Time: Ships in 1 days
- Minimum Order Quantity: 1
- Unit of Measure: PK
- Package Length: 4.00
- Package Width: 2.00
- Package Height: 3.00
- Package Weight: 1.00
Product info last updated on February 24, 2026 4:29pm UTC
Category: Nuts