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MS20074-04-03
Bolt
Description
MS20073/MS20074 Engine Bolts
Specifications
| Country of Origin | USA |
|---|---|
| Fastener Length | Between 0.453 inches and 0.50 inches |
| Features Provided | Finished head |
| Grip | 0.062 in, 0.0620 |
| Grip Length | Between 0.046 inches and 0.078 inches |
| Hardness Rating | 26 rockwell c and 32 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 | 0.469 in, 0.4690, 1/2 |
| 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 |
| NIIN | 00-825-1332 |
| NSN | 5306-00-825-1332 |
| Old AN | AN74A3 |
| Surface Treatment | Cadmium and chromate |
| Thread | 1/4-20 Coarse Thread |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.375 inches and 0.454 inches |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series | UNC |
| Thread Series Designator | Unc (coarse thread) |
| Thread Size | 1/4-20 |
| Thread Type | Coarse Thread |
| Weight | 0.013 lb |
| Width Between Flats | Between 0.430 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 MS20074-04-03. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error