- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.559 inches minimum and 0.641 inches maximum
- Fastener Length
- 0.609 inches minimum and 0.641 inches maximum
- Head Style
- Flat chamfer
- Head Diameter
- 0.218 inches minimum and 0.226 inches maximum
- Head Height
- 0.134 inches minimum and 0.138 inches maximum
- Internal Drive Style
- Hexagon
- Nominal Thread Diameter
- 0.138 inches
- Width Across Flats
- 0.109 inches minimum and 0.111 inches maximum
- Thread Quantity per Inch
- 40
- Minimum Tensile Strength
- 80000 pounds per square inch
- Hardness Rating
- 80.0 rockwell B minimum overall
- Minimum Yield Strength
- 30000 pounds per square inch
- Material
- Steel comp 302 overall or steel comp 304 overall or steel comp 305 overall or steel comp 316 overall or steel comp 384 overall or steel overall
- Material Document and Classification
- 66 fed std 1ST material response overall or 66 fed std 2ND material response overall or 66 fed std 3RD material response overall or 66 fed std 4TH material response overall or 66 fed std 5TH material response overall or ASTM-A493 aisi XM-7 assn std 6TH material response overall
- Surface Treatment
- Passivate overall
- Surface Treatment Document and Classification
- QQ-P-35 fed spec single treatment response overall
- Thread Series Designator
- UNF
- 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.