- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.578 inches nominal
- Fastener Length
- 1.516 inches minimum and 1.531 inches maximum
- Head Style
- Dished hexagon
- Head Height
- 0.188 inches minimum and 0.203 inches maximum
- Width Between Flats
- 0.553 inches minimum and 0.564 inches maximum
- Grip Diameter
- 0.3735 inches minimum and 0.3745 inches maximum
- Shank Unthreaded Hole Diameter
- 0.106 inches minimum and 0.116 inches maximum first hole
- Single Shear Strength
- 180000 pounds per square inch
- Nominal Thread Diameter
- 0.3750 inches
- Grip Length
- 0.928 inches minimum and 0.948 inches maximum
- Thread Quantity per Inch
- 24
- Minimum Tensile Strength
- 180000 pounds per square inch
- Hardness Rating
- 39.0 rockwell C minimum and 43.0 rockwell C maximum overall
- Distance from Head Largest Bearing Surface to Shank Hole Center
- 1.294 inches minimum and 1.344 inches maximum first hole
- Surface Finish
- 32.0 microinches bearing surface of head
- Surface Finish
- 32.0 microinches threads
- Part Name Assigned BY Controlling Agency
- Bolt, shear, hexagon head, 108 ksi shear, long thread
- Special Features
- Material - cres - A286 (uns S66286) per AMS5731, AMS5732, AMS5737 or AMS5853. finish - clean and passivate per AMS2700, method 1, class 4. optional aluminum coat per NAS4006, designated by code P. heat treatment - 180 to 200 ksi ultimate tensile; 108 ksi min ultimate shear. hardness: 39-43 hrc. D = drilled shank. P = aluminum coat. heads are dimpled on NAS1953 thru NAS1958 only.
- Material
- Steel corrosion resisting overall
- Material Document and Classification
- AMS5731 international std/spec all material responses or AMS5732 international std/spec all material responses or AMS5737 international std/spec all material responses overall
- Surface Treatment
- Passivate and aluminum overall
- Surface Treatment Document and Classification
- AMS2700, method 1, class 4 international std/spec all treatment responses and NAS4006 international std/spec all treatment responses overall
- Thread Series Designator
- UNJF
- Specification/Standard Data
- 80205-NAS1953-1970 professional/industrial association standard
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.