- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.425 inches nominal
- Fastener Length
- 3.285 inches minimum and 3.315 inches maximum
- Head Style
- Dished hexagon
- Head Height
- 0.125 inches minimum and 0.140 inches maximum
- Width Between Flats
- 0.429 inches minimum and 0.439 inches maximum
- Grip Diameter
- 0.248 inches minimum and 0.249 inches maximum
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 2.865 inches minimum and 2.885 inches maximum
- Thread Quantity per Inch
- 28
- Minimum Tensile Strength
- 160000 pounds per square inch
- Part Name Assigned BY Controlling Agency
- Bolt, tension, hex head, close tolerance
- Special Features
- Drilled shank
- Material
- Steel comp E4340 or steel comp 8740 overall
- Surface Treatment
- Cadmium and chromate overall
- Thread Series Designator
- UNJF
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.