- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.244 inches minimum and 0.306 inches maximum
- Fastener Length
- 0.385 inches minimum and 0.415 inches maximum
- Head Style
- Flat countersunk
- Head Diameter
- 0.297 inches minimum and 0.302 inches maximum
- Grip Diameter
- 0.1885 inches minimum and 0.1895 inches maximum
- Internal Drive Style
- Offset cruciform (torque set)
- Nominal Thread Diameter
- 0.190 inches
- Grip Length
- 0.109 inches minimum and 0.141 inches maximum
- Thread Quantity per Inch
- 32
- Hardness Rating
- 36.0 rockwell C minimum overall and 40.0 rockwell C maximum overall
- Countersink Angle
- 100.0 degrees nominal
- Material
- Steel comp 4130 overall or steel comp 4140 overall
- Surface Treatment
- Cadmium overall
- Surface Treatment Document and Classification
- QQ-P-416, ty 1, cl 3 fed spec single treatment response overall
- Thread Series Designator
- UNF
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.