- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.594 inches maximum
- Fastener Length
- 2.017 inches minimum and 2.047 inches maximum
- Head Style
- Dished hexagon
- Head Height
- 0.281 inches minimum and 0.296 inches maximum
- Width Between Flats
- 0.865 inches minimum and 0.877 inches maximum
- Shoulder Diameter
- 0.5761 inches minimum overall and 0.5771 inches maximum overall
- Shoulder Length
- 1.428 inches minimum first shoulder and 1.448 inches maximum first shoulder
- Nominal Thread Diameter
- 0.5625 inches
- Thread Quantity per Inch
- 18
- Minimum Tensile Strength
- 160000 pounds per square inch
- Minimum Yield Strength
- 95000 pounds per square inch
- Shoulder Shape
- Round first shoulder
- Material
- Steel comp 4340 overall or steel comp E4340 overall or steel comp 8740 overall
- Material Document and Classification
- MIL-S-5000 mil spec 1ST material response overall or MIL-S-5000 mil spec 2ND material response overall or MIL-S-6049 mil spec 3RD material response overall or ams 6322 assn std 3RD material response overall
- Surface Treatment
- Cadmium overall and chromate overall
- Surface Treatment Document and Classification
- QQ-P-416, type 2, class 2 fed spec all treatment responses overall
- Thread Series Designator
- UNJF
- Specification/Standard Data
- 80205-NAS6209 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.