- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.251 inches minimum and 0.301 inches maximum
- Fastener Length
- 1.199 inches minimum and 1.229 inches maximum
- Head Style
- Flat countersunk
- Head Diameter
- 0.328 inches minimum and 0.385 inches maximum
- Grip Diameter
- 0.1885 inches minimum and 0.1895 inches maximum
- Shank Unthreaded Hole Diameter
- 0.070 inches minimum and 0.080 inches maximum first hole
- Internal Drive Style
- Offset cruciform (torque set)
- Nominal Thread Diameter
- 0.190 inches
- Grip Length
- 0.928 inches minimum and 0.948 inches maximum
- Thread Quantity per Inch
- 32
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 36.0 rockwell C minimum and 40.0 rockwell C maximum overall
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Distance from Head Largest Bearing Surface to Shank Hole Center
- 1.072 inches minimum and 1.112 inches maximum first hole
- Surface Finish
- 32.0 microinches grip
- Surface Finish
- 32.0 microinches threads
- Material
- Steel comp 4140 or steel comp 4340 or steel comp 8740 overall
- Material Document and Classification
- MIL-S-5626 mil spec 1ST material response or MIL-S-8844 mil spec 2ND material response or MIL-S-6049 mil spec 3RD material response overall
- Surface Treatment
- Cadmium and chromate overall
- Surface Treatment Document and Classification
- QQ-P-416, type 2 class 2 fed spec single treatment response overall
- Thread Series Designator
- UNJF
- Specification/Standard Data
- 80205-NAS1153 professional/industrial association standard
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.