- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 1.150 inches minimum and 1.250 inches maximum
- Fastener Length
- 1.250 inches nominal
- Head Style
- Flat chamfer
- Head Diameter
- 0.921 inches minimum and 0.937 inches maximum
- Head Height
- 0.616 inches minimum and 0.625 inches maximum
- Locking Feature
- Pellet threads
- Internal Drive Style
- Hexagon
- Nominal Thread Diameter
- 0.500 inches
- Width Across Flats
- 0.375 inches minimum and 0.379 inches maximum
- Thread Quantity per Inch
- 20
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 33.0 rockwell C minimum overall and 42.0 rockwell C maximum overall
- Material
- Plastic polyamide locking featuresteel comp 303 fastener or steel comp 304 fastener or steel comp 305 fastener or steel comp 316 fastener or steel comp 384 fastener
- Material Document and Classification
- Astm A493 assn std all material responses fastener
- Surface Treatment
- Cadmium fastener and chromate fastener
- Surface Treatment Document and Classification
- QQ-P-416, cl 2, ty 2 fed spec single treatment response fastener
- Thread Series Designator
- UNRF
- Specification/Standard Data
- 80205-NAS1351 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.