Screw, Machine, Flat Countersunk Head NAS1153E20P

Technical Description

High-strength corrosion and heat-resistant A-286 alloy structural aerospace machine screw manufactured to NAS1153 specifications. Thread dimensions follow a right-hand #10-32 UNJF-3A close-tolerance class fit featuring a nominal grip length of 1.250 inches (1-1/4"). Fabricated from premium A-286 iron-base superalloy, delivering an ultimate tensile strength rating of 160,000 PSI alongside excellent oxidation resistance at elevated temperatures. Outfitted with an aerodynamically flush 100-degree flat countersunk tension head utilizing a cruciform cross-recess drive system to handle tight structural preload requirements. Finished with a comprehensive passivation surface treatment to eliminate external iron contamination and prevent galvanic corrosion in critical high-temperature airframe joint assemblies.

Component Specifications