NAS334A5

Screw, cap, Socket Head

Part number: NAS334A5
NSN: 5305-00-149-9941
NIIN: 00-149-9941
Item name: Screw, cap, Socket Head
Manufacturer: National Aerospace Standards
CAGE code: 80205
FSC: 5305
Unit of issue: EA
DEMIL code: A

Alternate part numbers

NAS334A5 CAGE 80205

Technical characteristics

Thread Class: 3A
Thread Length: 0.469 inches minimum
Fastener Length: 0.657 inches nominal
Head Style: Flat countersunk
Head Diameter: 0.497 inches minimum and 0.507 inches maximum
Internal Drive Style: Hexagon
Nominal Thread Diameter: 0.250 inches
Width Across Flats: 0.157 inches minimum and 0.159 inches maximum
Thread Quantity per Inch: 28
Minimum Tensile Strength: 160000 pounds per square inch
Hardness Rating: 36.0 rockwell C minimum overall and 40.0 rockwell C maximum overall
Countersink Angle: 100.0 degrees nominal
Material: Steel overall
Surface Treatment: Cadmium overall and dichromate overall
Thread Series Designator: UNF

Catalogue data is compiled from public DLA/FLIS sources and is provided for identification. Availability, condition and certification are confirmed on quotation. OmniSynk Distribution Services is a stocking distributor.

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