- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.376 inches minimum and 0.417 inches maximum
- Fastener Length
- 0.469 inches minimum and 0.500 inches maximum
- Head Style
- Flat chamfer
- Head Diameter
- 0.3030 inches minimum and 0.3125 inches maximum
- Head Height
- 0.185 inches minimum and 0.190 inches maximum
- Locking Feature
- Strip threads or patch threads
- Internal Drive Style
- Hexagon
- Nominal Thread Diameter
- 0.190 inches
- Width Across Flats
- 0.1562 inches minimum and 0.1587 inches maximum
- Thread Quantity per Inch
- 24
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 38.0 rockwell C minimum overall and 45.0 rockwell C maximum overall
- Minimum Yield Strength
- 155000 pounds per square inch
- Material
- Steel overall
- Surface Treatment
- Cadmium overall and chromate overall
- Surface Treatment Document and Classification
- QQ-P-416, type 2 class 2 fed spec single treatment response overall
- Thread Series Designator
- UNC
- Nondefinitive Spec/STD Data
- 6 type
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.