- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.625 inches nominal
- Fastener Length
- 0.625 inches nominal
- Head Style
- Flat chamfer
- Head Diameter
- 0.262 inches minimum and 0.270 inches maximum
- Head Height
- 0.159 inches minimum and 0.164 inches maximum
- Locking Feature
- Patch threads
- Internal Drive Style
- Hexagon
- Nominal Thread Diameter
- 0.1640 inches
- Width Across Flats
- 0.141 inches nominal
- Thread Quantity per Inch
- 32
- Minimum Tensile Strength
- 180000 pounds per square inch
- Chamfer Angle
- 30.0 degrees minimum and 45.0 degrees maximum
- Part Name Assigned BY Controlling Agency
- Screw, cap, socket head, undrilled and drilled, plain and self-locking, alloy steel, corrosion-resistant steel and heat-resistant steel, UNRC-3A and UNRC-2A
- Material
- Iron alloy 660 overall
- Material Document and Classification
- AMS5731 or AMS5737 assn std single material response overall
- Surface Treatment
- Passivate overall
- Surface Treatment Document and Classification
- AMS2700, method 1, type 2 or 8, class 4 assn std single treatment response overall
- Thread Series Designator
- UNRC
- Specification/Standard Data
- 80205-NAS1352 professional/industrial association standard
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.