- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.438 inches nominal
- Fastener Length
- 3.360 inches minimum and 3.390 inches maximum
- Head Style
- Hexagon
- Head Height
- 0.156 inches minimum and 0.171 inches maximum
- Width Between Flats
- 0.492 inches minimum and 0.502 inches maximum
- Grip Diameter
- 0.3110 inches minimum and 0.3120 inches maximum
- Shank Unthreaded Hole Diameter
- 0.076 inches minimum and 0.086 inches maximum all holes
- Nominal Thread Diameter
- 0.3215 inches
- Grip Length
- 2.927 inches minimum and 2.947 inches maximum
- Thread Quantity per Inch
- 24
- Minimum Tensile Strength
- 160000 pounds per square inch
- Distance from Head Largest Bearing Surface to Shank Hole Center
- 3.193 inches nominal all holes
- Part Name Assigned BY Controlling Agency
- Bolt, tension, hex head, close tolerance, alloy steel, short thread, reduced major thread dia., self-locking and nonlocking, 160 ksi ftu
- Material
- Steel comp 4140 or steel comp 4340 or steel comp 8740 overall
- Material Document and Classification
- AMS6349 or AMS6382 assn std 1ST material response or AMS6415 or AMS6484 assn std 2ND material response or AMS6322 assn std 3RD material response overall
- Surface Treatment
- Cadmium overall
- Surface Treatment Document and Classification
- AMS-QQ-C-416, type ii, class 2 assn std 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.