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NAS428K4-7
Bolt
Description
Fastener Length: 15/16", Thread: 1/4-28, Thread Length: 29/32"
Specifications
| Fastener Length | 0.875 inches minimum and 0.937 inches maximum |
|---|---|
| Features Provided | Finished head |
| Grip Length | 0.031 inches minimum and 0.062 inches maximum |
| Hardness Rating | 26.0 rockwell c minimum and 32.0 rockwell c maximum |
| Head Height | 0.141 |
| Head Style | Crowned hexagon |
| Length | 15/16 |
| Material | Steel |
| Material Specification | Mil-s-6049 mil spec 1st material response or mil-s-6050 mil spec 2nd material response or mil-s-6098 mil spec 3rd material response or mil-s-6758 mil spec 4th material response or ams 6300 assn std 5th material response or mil-s-5626 mil spec 6th material response |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| Special Features | Slot in thd end 0.061 in. min 0.077 in. max by 0.097 in. min 0.130 in. max deep |
| Specification Data | 80205-nas428 professional/industrial association standard |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,type 2,cl 3 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.813 inches minimum and 0.906 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNF |
| Thread Size | 1/4 |
| Width Between Flats | 0.428 inches minimum and 0.440 inches maximum |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- NAS428K4-6
- NAS428K4-7
- NAS428K4-13
- NAS428K4-22
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS428K4-7. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error