- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.438 inches nominal
- Fastener Length
- 1.329 inches minimum and 1.374 inches maximum
- Head Style
- Dished hexagon
- Head Height
- 0.156 inches minimum and 0.171 inches maximum
- Width Between Flats
- 0.492 inches minimum and 0.502 inches maximum
- Grip Diameter
- 0.3110 inches minimum and 0.3120 inches maximum
- Shank Unthreaded Hole Diameter
- 0.076 inches minimum and 0.086 inches maximum threads
- Nominal Thread Diameter
- 0.3125 inches
- Grip Length
- 0.740 inches minimum and 0.760 inches maximum
- Thread Quantity per Inch
- 24
- Minimum Tensile Strength
- 160000 pounds per square inch
- Distance from Head Largest Bearing Surface to Shank Hole Center
- 1.006 inches nominal threads
- Chamfer Angle
- 10.0 degrees minimum and 20.0 degrees maximum
- Part Name Assigned BY Controlling Agency
- Bolt, tension, hex head, close tolerance, A286 cres, short thread, reduced major thread dia., self-locking and nonlocking, 160 ksi ftu
- Special Features
- Cres - A286 (uns S66286) conforming to the chemistry of AMS5731, AMS5732, AMS5737, or AMS5853. non-locking. heat treat: 160 - 190 ksi ftu. no finish code after basic number for cadmium plated bolts. add "d" after grip dash number for drilled shank bolts. cadmium plated - cadmium plate per AMS-QQ-P-416, type ii, class 2. identify with green dye or paint on the thread end.
- Color
- Green threads
- Hazardous Substances
- Cadmium
- Material
- Steel corrosion resisting overall
- Material Document and Classification
- AMS5731 international std/spec all material responses or AMS5732 international std/spec all material responses overall
- Surface Treatment
- Cadmium overall
- Surface Treatment Document and Classification
- AMS-QQ-P-416, type ii, class 2 international std/spec all treatment responses overall
- Thread Series Designator
- UNJF
- Specification/Standard Data
- 80205-NAS6303 thru NAS6320 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.