Home | Contact Us

Black Luster Machine Screw Hex Nuts

These machine screw hex nuts are grade 2 steel and conform to ANSI/ASME B18.6.3.

Black Luster Coating provides superior corrosion resistance than black oxide and zinc plated finishes with best

in class decorative finish. Excellent weatherability and chemical resistance while maintaining functional thread engagement.

Salt spray 500 hours per ASTM B117.

Min / max operating temperature range: -40F to +400F

 Part Number

Screw Size 

Width 

Height 

 901

6-32 

5/16" 

 7/64"

 902

 8-32

 11/32"

 1/8"

 903

 10-32

 3/8"

 1/8"

 904

 1/4-20

 7/16"

 3/16"