- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.323 inches minimum and 0.363 inches maximum
- Fastener Length
- 1.646 inches minimum and 1.666 inches maximum
- Head Style
- Button
- Head Diameter
- 0.500 inches nominal
- Head Height
- 0.125 inches nominal
- Groove Diameter
- 0.191 inches minimum and 0.201 inches maximum
- Shank Unthreaded Hole Diameter
- 0.076 inches minimum and 0.086 inches maximum first hole
- Single Shear Strength
- 3680 pounds per square inch
- Internal Drive Style
- SLOT
- Nominal Thread Diameter
- 0.250 inches
- Thread Quantity per Inch
- 28
- Minimum Tensile Strength
- 125000 pounds per square inch
- Hardness Rating
- 26.0 rockwell C minimum and 32.0 rockwell C maximum overall
- Distance from Head Largest Bearing Surface to Shank Hole Center
- 1.484 inches minimum and 1.516 inches maximum first hole
- Material
- Steel comp 4140 or steel comp 8740 or steel comp 8630 or steel comp 8735 or steel comp 4130 or steel comp 4037 overall
- Material Document and Classification
- MIL-S-5626 mil spec 1ST material response or MIL-S-6049 mil spec 2ND material response or MIL-S-6050 mil spec 3RD material response or MIL-S-6098 mil spec 4TH material response or MIL-S-6758 mil spec 5TH material response or ams 6300 assn std 6TH material response overall
- Surface Treatment
- Cadmium and chromate overall
- Surface Treatment Document and Classification
- QQ-P-416, ty 2 cl 3 fed spec all treatment responses 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.