- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.609 inches minimum and 0.750 inches maximum
- Fastener Length
- 0.720 inches minimum and 0.750 inches maximum
- Head Style
- Flat chamfer
- Head Diameter
- 0.457 inches minimum and 0.469 inches maximum
- Head Height
- 0.306 inches minimum and 0.312 inches maximum
- Internal Drive Style
- Hexagon
- End Item Identification
- 3990-01-442-1939 bap (bridge adapter pallet); hemtt family (heavy expanded mobility tactical trucks)
- Nominal Thread Diameter
- 0.312 inches
- Width Across Flats
- 0.250 inches minimum and 0.253 inches maximum
- Thread Quantity per Inch
- 18
- Minimum Tensile Strength
- 160000 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
- Surface Treatment
- Passivate overall
- Surface Treatment Document and Classification
- QQ-P-35 fed spec single treatment response overall
- Thread Series Designator
- UNRC
- Specification/Standard Data
- 80205-NAS1352 professional/industrial association standard
- Nondefinitive Spec/STD Data
- 1 type and 49 style
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.