- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.578 inches nominal
- Fastener Length
- 1.125 inches minimum and 1.155 inches maximum
- Head Style
- Dished hexagon
- Head Height
- 0.188 inches minimum and 0.203 inches maximum
- Width Between Flats
- 0.554 inches minimum and 0.564 inches maximum
- Grip Diameter
- 0.404 inches minimum and 0.405 inches maximum
- Nominal Thread Diameter
- 0.3750 inches
- Grip Length
- 0.552 inches minimum and 0.572 inches maximum
- Thread Quantity per Inch
- 24
- Minimum Tensile Strength
- 160000 pounds per square inch
- Part Name Assigned BY Controlling Agency
- Bolt, tension, close tolerance, alloy steel, long thread, reduced major dia., self-locking and nonlocking, 160 ksi ftu
- Material
- Steel comp 4140 and steel comp 4340 and steel comp 8740 overall
- Material Document and Classification
- AMS6349 or AMS6382 national std 1ST material response and AMS6414 or AMS6484 national std 2ND material response and AMS6322 national std 3RD material response overall
- Surface Treatment
- Cadmium and chromate overall
- Surface Treatment Document and Classification
- QQ-P-416, type ii, class 2 fed spec single treatment response overall
- Thread Series Designator
- UNJF
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.