
Country of Origin
United States
Shipping Weight
0.001 pounds
Manufacturer P/N
NAS1581F4T8
Schedule B Code
7318.15.2000
Thread Class: 3A Thread Direction: Right-Hand Thread Length: 0.378 Inches Minimum And 0.428 Inches Maximum Fastener Length: 0.888 Inches Minimum And 0.918 Inches Maximum Head Style: Flat Countersunk Head Diameter: 0.350 Inches Minimum And 0.399 Inches Maximum Grip Diameter: 0.2485 Inches Minimum And 0.2495 Inches Maximum Internal Drive Style: Offset Cruciform (Torque Set) Nominal Thread Diameter: 0.250 Inches Grip Length: 0.490 Inches Minimum And 0.510 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: 99.0 Degrees Minimum And 101.0 Degrees Maximum Surface Finish: 32.0 Microinches Grip Surface Finish: 32.0 Microinches Threads Material: Steel Comp E4340 Overall Or Steel Comp 4140 Overall Or Steel Comp 8740 Overall Or Steel Comp 8735 Overall Or Steel Comp 6150 Overall Surface Treatment: Cadmium Overall And Chromate Overall Surface Treatment Document And Classification: Qq-P-416 Ty 2 Cl 2 Fed Spec Single Treatment Response Overall Thread Series Designator: Unjf Specification/Standard Data: 80205-Nas1581 Professional/Industrial Association Standard