- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.362 inches nominal
- Fastener Length
- 0.737 inches minimum and 0.777 inches maximum
- Head Style
- Flat countersunk
- Head Diameter
- 0.327 inches minimum and 0.385 inches maximum
- Shoulder Diameter
- 0.186 inches minimum and 0.189 inches maximum first shoulder
- Shoulder Length
- 0.430 inches minimum and 0.445 inches maximum first shoulder
- Internal Drive Style
- Cross recess type 1
- End Item Identification
- Flight control
- Nominal Thread Diameter
- 0.138 inches
- Thread Quantity per Inch
- 32
- Minimum Tensile Strength
- 125000 pounds per square inch
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Shoulder Shape
- Round first shoulder
- Material
- Steel comp 4037 or steel comp 8630 overall
- Surface Treatment
- Cadmium and chromate overall
- Thread Series Designator
- UNJC
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.