- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.899 inches nominal
- Fastener Length
- 4.044 inches nominal
- Head Style
- Double hexagon W/hole
- Head Height
- 0.618 inches nominal
- Width Between Flats
- 0.688 inches nominal
- Extended Washer Diameter
- 1.045 inches nominal
- Extended Washer Thickness
- 0.150 inches nominal
- Grip Diameter
- 0.6235 inches nominal
- Nominal Thread Diameter
- 0.625 inches
- Grip Length
- 3.125 inches nominal
- Minimum Tensile Strength
- 180000 pounds per square inch
- Hardness Rating
- 41.0 rockwell C nominal overall
- Material
- Steel comp 4140 overall or steel comp 4340 overall or steel comp 8740 overall or steel comp 6150 overall
- Material Document and Classification
- Aisi assn std 1ST material response overall or aisi assn std 2ND material response overall or aisi assn std 3RD material response overall or MIL-S-8503 mil spec 4TH material response overall
- Surface Treatment
- Cadmium overall and chromate overall
- Surface Treatment Document and Classification
- QQ-P-416 fed spec all treatment responses 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.