- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.475 inches minimum
- Fastener Length
- 1.062 inches nominal
- Head Style
- Bevel-conical
- Head Diameter
- 0.428 inches minimum and 0.438 inches maximum
- Head Height
- 0.250 inches nominal
- Hole Diameter
- 0.037 inches minimum and 0.042 inches maximum
- Internal Drive Style
- Hexagon
- Nominal Thread Diameter
- 0.250 inches
- Width Across Flats
- 0.1880 inches minimum and 0.1900 inches maximum
- Hole Quantity
- 4
- Hole Type
- Drilled
- Thread Quantity per Inch
- 28
- Hole Configuration Style
- Round internal hexagon
- Material
- Steel comp 4340 overall or steel comp 4140 overall or steel comp 8740 overall or steel comp 8735 overall
- Surface Treatment
- Cadmium overall and chromate overall
- Surface Treatment Document and Classification
- QQ-P-416 TY2 CL2 fed spec single treatment response 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.