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          DESCRIPTION
SAE Prevailing Torque Lock Nut for use with SAE J429 Grade 5 fasteners. Complies with ASTM A563 Grade B; IFI 100/107. All metal, cadmium plated and waxed. Locks in all positions. Zinc yellow. Proof Load: 120,000 psi. One piece all steel. Easy to apply.
Highlights:
- Tempering Temperature: 800° F. (minimum)
 - Decarburization: SAE J121
 - Discontinuities: SAE J122A
 - Rockwell Hardness: B69-C32
 - Size: 7/16-20
 - Width Across Flats: 11/16
 - Per package of 50
 
                    
                    
                



