- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.372 inches minimum and 0.422 inches maximum
- Fastener Length
- 3.570 inches minimum and 3.600 inches maximum
- Head Style
- Oval countersunk
- Head Diameter
- 0.4208 inches minimum and 0.4258 inches maximum
- Shoulder Diameter
- 0.2802 inches minimum first shoulder and 0.2807 inches maximum first shoulder
- Shoulder Length
- 3.114 inches minimum first shoulder and 3.142 inches maximum first shoulder
- Internal Drive Style
- High-torque
- Nominal Thread Diameter
- 0.250 inches
- Thread Quantity per Inch
- 28
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Shoulder Shape
- Round first shoulder
- Special Features
- Internal hexagon socket in threaded end 0.0947 in. min and 0.0967 in. max width across flats
- Material
- Steel comp XM-13 overall
- Material Document and Classification
- AMS5629 assn std single material 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.