- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.501 inches min, 0.578 inches max
- Fastener Length
- 2.516 inches min, 2.563 inches max
- Head Style
- PAN
- Head Diameter
- 0.473 inches min, 0.492 inches max
- Head Height
- 0.162 inches min, 0.175 inches max
- Internal Drive Style
- Cross recess type 1
- Nominal Thread Diameter
- 0.250 inches
- Thread Quantity per Inch
- 28
- Minimum Tensile Strength
- 125000 psi
- Hardness Rating
- 26.0-32.0 Rockwell C
- Screw Material
- Steel comp 4037 or steel comp 8630
- Screw Material Spec
- AMS 6300 or MIL-S-6050
- Surface Treatment
- Cadmium and chromate
- Surface Treatment Spec
- QQ-P-461, T 2, cl 3
- 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.