304 stainless steel: Stainless steel with superior rust resistant ensure long lasting results，corrosion resistance, anti-aging, good toughness.
The kit has lots of different sizes, which can meet the maximum of requirement for you.
Upgraded storage box-All of Screws and Nuts are packed in a durable and sturdy Box to efficiently bear the weight of the whole package.
Package Includes :
#4-40---1/4”---25pcs
#4-40---5/16”---25pcs
#4-40---3/8”---25pcs
#4-40---5/8”---25pcs
#4-40---Flat Washers---50PCS
#4-40---Nuts--50PCS
#6-32---1/4”---25pcs
#6-32---5/16”---25pcs
#6-32---3/8”---25pcs
#6-32---5/8”---25pcs
#6-32---Flat Washers---50PCS
#6-32---Nuts---50PCS
#8-32---1/4”---20pcs
#8-32---5/16”---20pcs
#8-32---3/8”---20pcs
#8-32---5/8”--15pcs
#8-32---Flat Washers---50PCS
#8-32---Nuts---50PCS
#10-24---1/4”---15pcs
#10-24---5/16”---10pcs
#10-24---3/8”---10pcs
#10-24---5/8”--15pcs
#10-24---Flat Washers--45PCS
#10-24---Nuts---45PCS
