- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.338-0.388 in
- Fastener Length
- 0.786-0.816 in
- Head Style
- Flat countersunk
- Head Diameter
- 0.339-0.381 in
- Grip Diameter
- 0.1885-0.1895 in
- Shank Unthreaded Hole Dia
- 0.070-0.080 in
- Internal Drive
- Offset cruciform (torque set)
- Nominal Thread Dia
- 0.190 in
- Grip Length
- 0.428-0.448 in
- Thread Qty/Inch
- 32
- Min Tensile Strength
- 160,000 psi
- Hardness
- 36.0-40.0 Rockwell C
- Countersink Angle
- 99-101 deg
- Surface Finish
- 32.0 microinches
- Material
- Steel 4140/E4340/8740 per MIL-S-5626/5000/6049
- Surface Treatment
- Cadmium + Chromate per QQ-P-416 Ty 2 Cl 2
- Thread Series
- UNJF
- Specification
- NAS1580
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.