- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- C1.000 single through hole with threaded insert nominal
- Fastener Length
- 0.984 inches minimum and 1.016 inches maximum
- Head Style
- Flat countersunk
- Head Diameter
- 0.359 inches minimum and 0.411 inches maximum
- Internal Drive Style
- Hexagon
- Nominal Thread Diameter
- 0.250 inches
- Width Across Flats
- 0.1562 inches minimum and 0.1582 inches maximum
- Thread Quantity per Inch
- 28
- Hardness Rating
- 36.0 rockwell C minimum overall and 43.0 rockwell C maximum overall
- Countersink Angle
- 80.0 degrees minimum and 84.0 degrees maximum
- Special Features
- MS24669 is a cancelled spec
- Material
- Steel overall
- Surface Treatment
- Cadmium overall and chromate overall
- Surface Treatment Document and Classification
- QQ-P-416-TY 2, cl 3 fed spec all treatment responses 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.