bolts › machine bolts
MS20074-04-06
Bolt
Description
MS20073/MS20074 Engine Bolts
Specifications
| Country of Origin | USA |
|---|---|
| Fastener Length | Between 0.765 inches and 0.781 inches |
| Features Provided | Finished head |
| Grip | 0.250 in, 0.2500 |
| Grip Length | Between 0.234 inches and 0.266 inches |
| Hardness Rating | 26.0 rockwell c and 32.0 rockwell c |
| Head Height | Between 0.203 inches and 0.234 inches |
| Head Style | Hexagon Head |
| Head Type | Drilled |
| Hole Configuration Style | Hexagon longitudinal hole |
| Hole Diameter | 0.07 |
| Hole Quantity | 6 |
| Hole Type | Drilled |
| Industry Standards/Certification | MS20074 |
| Length | 0.781 in, 0.7810 |
| Material | Steel |
| Material Specification | Mil-s-6049 military specification 1st material response or mil-s-6050 military specification 2nd material response or mil-s-6098 military specification 3rd material response or ams 6300 assn standard 4th material response or mil-s-6758 military specification 5th material response or mil-s-5626 military specification 6th material response |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| Minimum Yield Strength | 2577 pounds per square inch |
| NIIN | 00-754-1789 |
| NSN | 5306-00-754-1789 |
| Old AN | AN74A6 |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Type 2 class 3 federal specification single treatment response qq-p-416 |
| Thread | 1/4-20 Coarse Thread |
| Thread Class | 3a |
| Thread Diameter | 0.25 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.499 inches and 0.578 inches |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series Designator | Unc (coarse thread) |
| Thread Size | 1/4-20 |
| Thread Type | Coarse Thread |
| Weight | 0.017 lb |
| Width Between Flats | Between 0.43 inches and 0.439 inches |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS20074-04-06. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error