- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.875 inches minimum
- Fastener Length
- 0.250 inches nominal
- Head Style
- Fillister
- Head Diameter
- 0.262 inches minimum and 0.270 inches maximum
- Head Height
- 0.159 inches minimum and 0.164 inches maximum
- Hole Diameter
- 0.044 inches minimum and 0.050 inches maximum
- Internal Drive Style
- Hexagon
- Nominal Thread Diameter
- 0.1640 inches
- Width Across Flats
- 0.141 inches nominal
- Hole Type
- Drilled
- Thread Quantity per Inch
- 36
- Screw Material
- Steel
- Screw Material Document and Classification
- AMS5731 national spec single material response or AMS5737 national spec single material response and FF-S-86 fed std all material responses and NAS1351 national spec all material responses
- Screw Surface Treatment
- Cadmium
- Screw Surface Treatment Document and Classification
- AMS-QQ-P-416, type ii class 2 national spec single treatment response
- Special Features
- Minimum breaking strength (lbf): 2360.0 nominal. head will have (6) drilled holes spaced 60 degrees
- Thread Series Designator
- UNRF
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.