- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.768 inches minimum and 0.845 inches maximum
- Fastener Length
- 0.828 inches minimum and 0.875 inches maximum
- Head Style
- Hexagon
- Head Height
- 0.281 inches nominal
- Width Between Flats
- 0.490 inches minimum and 0.502 inches maximum
- Hole Diameter
- 0.070 inches nominal
- Nominal Thread Diameter
- 0.312 inches
- Hole Quantity
- 6
- Hole Type
- Drilled
- Features Provided
- Finished head
- Thread Quantity per Inch
- 24
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 36.0 rockwell C minimum overall and 40.0 rockwell C maximum overall
- Hole Configuration Style
- Hexagon flats
- Material
- Steel comp 4140 overall or steel comp 8740 overall or steel comp 8630 overall or steel comp 8735 overall or steel comp 4130 overall or steel comp 4037 overall
- Material Document and Classification
- MIL-S-5625 fed spec 1ST material response overall or MIL-S-6049 fed spec 2ND material response overall or MIL-S-6050 fed spec 3RD material response overall or MIL-S-6098 fed spec 4TH material response overall or MIL-S-6758 fed spec 5TH material response overall or ams 6300 assn std 6TH material response overall
- Surface Treatment
- Cadmium overall
- Surface Treatment Document and Classification
- QQ-P-416, type 2, class 3 fed spec single treatment response 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.