- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.438 inches minimum
- Fastener Length
- 0.438 inches nominal
- Head Style
- Double hexagon extended washer
- Head Height
- 0.330 inches nominal
- Width Between Flats
- 0.304 inches minimum and 0.313 inches maximum
- Extended Washer Diameter
- 0.438 inches nominal
- Extended Washer Thickness
- 0.060 inches minimum and 0.070 inches maximum
- Hole Diameter
- 0.062 inches nominal
- Nominal Thread Diameter
- 0.250 inches
- Hole Quantity
- 4
- Hole Type
- Drilled
- Features Provided
- Finished head
- Thread Quantity per Inch
- 28
- Hole Configuration Style
- Double hexagon flats
- Material
- Iron alloy 660 overall
- Material Document and Classification
- Ams 5737 assn std single material response overall
- Surface Treatment
- Passivate 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.