- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.694 inches nominal
- Fastener Length
- 2.8665 inches minimum and 2.8965 inches maximum
- Head Style
- Flat countersunk
- Head Diameter
- 0.809 inches minimum and 0.892 inches maximum
- Grip Diameter
- 0.4360 inches minimum and 0.4370 inches maximum
- Internal Drive Style
- Cross recess type 1
- Nominal Thread Diameter
- 0.4375 inches
- Grip Length
- 2.1775 inches minimum and 2.1975 inches maximum
- Thread Quantity per Inch
- 20
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Material
- 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-6049 mil spec 2ND material response overall or ams 6322 assn std 2ND material response overall
- Surface Treatment
- Cadmium overall 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
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.