- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.899 inches minimum and 1.000 inches maximum
- Fastener Length
- 0.970 inches minimum and 1.000 inches maximum
- Head Style
- PAN
- Head Diameter
- 0.473 inches minimum and 0.492 inches maximum
- Head Height
- 0.162 inches minimum and 0.175 inches maximum
- Internal Drive Style
- Cross recess type 1
- Nominal Thread Diameter
- 0.250 inches
- Thread Quantity per Inch
- 28
- Minimum Tensile Strength
- 160 pounds per square inch
- Hardness Rating
- 36.0 rockwell C minimum and 40.0 rockwell C maximum
- Screw Material
- Steel comp 4140 or steel comp E4340 or steel comp 8740
- Screw Material Document and Classification
- MIL-S-562 mil spec 1ST material response or MIL-S-5000 mil spec 2ND material response or MIL-S-6049 mil spec 3RD material response
- Screw Surface Treatment
- Cadmium
- Screw Surface Treatment Document and Classification
- QQ-P-416, ty 1, cl 3 fed spec single treatment response
- Special Features
- Fleet ballistic missile quality as identified by quality control NO.POSP913093
- Thread Series Designator
- UNJF
- Specification/Standard Data
- 80205-NAS604 professional/industrial association standard
- Departure from Cited Designator
- As modified by special features
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.