- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.630 inches minimum and 0.670 inches maximum
- Fastener Length
- 2.520 inches minimum and 2.540 inches maximum
- Head Style
- Double hexagon W/hole
- Head Height
- 0.250 inches minimum and 0.270 inches maximum
- Width Between Flats
- 0.243 inches minimum and 0.251 inches maximum
- Extended Washer Diameter
- 0.365 inches minimum and 0.385 inches maximum
- Extended Washer Thickness
- 0.040 inches minimum and 0.050 inches maximum
- Hole Diameter
- 0.047 inches nominal
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 1.870 inches minimum and 1.890 inches maximum
- Hole Quantity
- 4
- Hole Type
- Drilled
- Features Provided
- Finished head
- Thread Quantity per Inch
- 28
- Minimum Tensile Strength
- 130000 pounds per square inch
- Hardness Rating
- 62.5 rockwell a minimum and 69.0 rockwell a maximum overall
- Hole Configuration Style
- Round longitudinal hole
- Surface Finish
- 63.0 microinches bearing surface of head
- Material
- Iron alloy 660 overall
- Material Document and Classification
- Ams 5732 assn std single material response overall
- Surface Treatment
- Passivate overall
- Surface Treatment Document and Classification
- QQ-P-35 fed spec single treatment response overall
- Thread Series Designator
- UNF
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.