bolts › machine bolts
72991-9-20
Bolt
Description
Fastener Length: 13/16", Thread: 1/2-18, Thread Length: 13/16"
Specifications
| Extended Washer Diameter | 0.928 inches minimum and 0.938 inches maximum |
|---|---|
| Extended Washer Thickness | 0.123 inches minimum and 0.143 inches maximum |
| Fastener Length | 0.828 |
| Grip Diameter | 0.5605 inches minimum and 0.5615 inches maximum |
| Grip Length | 1.250 |
| Head Height | 0.547 inches minimum and 0.567 inches maximum |
| Head Style | Double hexagon extended washer |
| Length | 13/16 |
| Material | Nickel |
| Material Specification | Ams5662 assn std 1st material response |
| Min. Tensile Strength (psi) | 220000 pounds per square inch |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416,typeii,class2 fed spec 1st treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.562 |
| Thread Direction | Right-hand |
| Thread Length | 0.828 |
| Thread Qty | 18 |
| Thread Qty Per Inch (tpi) | 18 |
| Thread Series Designator | UNJF |
| Thread Size | 1/2 |
| Width Between Flats | 0.616 inches minimum and 0.627 inches maximum |
Cross-reference
No interchangeable or dimensionally similar parts are on record for 72991-9-20. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error