- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 1.125 inches nominal
- Fastener Length
- 1.735 inches minimum and 1.781 inches maximum
- Head Style
- Flat chamfer
- Head Diameter
- 0.457 inches minimum and 0.468 inches maximum
- Head Height
- 0.306 inches minimum and 0.312 inches maximum
- Locking Feature
- Patch threads or pellet threads or strip threads
- Internal Drive Style
- Hexagon
- Nominal Thread Diameter
- 0.312 inches
- Width Across Flats
- 0.250 inches minimum and 0.253 inches maximum
- Thread Quantity per Inch
- 24
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 36.0 rockwell C minimum overall and 43.0 rockwell C maximum overall
- Material
- Plastic locking feature
- Material
- Steel fastener
- Surface Treatment
- Cadmium fastener and chromate fastener
- Surface Treatment Document and Classification
- QQ-P-416 ty 2 cl 2 fed spec single treatment response fastener
- Thread Series Designator
- UNF
- Nondefinitive Spec/STD Data
- 6 type
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.