NAS1801-4-18 Machine Screw
- Product Series
- NAS
- ECCN
- EAR99
- Schedule
- 7318.15.9000
Unit of Measure:
EA
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- Fastener Length
- Between 1.109 inches and 1.156 inches
- Hardness Rating
- Between 36.0 rockwell c and 40.0 rockwell c
- Head Height
- Between 0.125 inches and 0.140 inches
- Internal Drive Style
- Cross recess type 1
- Min. Tensile Strength (psi)
- 160000 pounds per square inch
- Screw Material
- Steel comp e4340 or steel comp 8740
- Screw Material Specification
- Mil-s-5000 military specification 1st material response or mil-s-6049 military specification 2nd material response or ams 6322 assn standard 2nd material response
- Screw Surface Treatment
- Cadmium and chromate
- Screw Surface Treatment Specification
- Qq-p-416 ty2 cl2 federal specification single treatment response
- Specification Data
- 80205-nas1801 professional/industrial association standard
- Thread Diameter
- 0.250 inches
- Thread Direction
- Right-hand
- Thread Length
- Between 1.045 inches and 1.092 inches
- Thread Qty Per Inch (tpi)
- 28
- Thread Series Designator
- Unjf (fine thread with external controlled root radius)
- Width Between Flats
- Between 0.367 inches and 0.376 inches