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NAS428-4A7
Machine Bolt
Description
length: 7/8", thread: 1/4-28, crowned hex head, cadmium plated steel, NAS428 series bolt
Specifications
| End Application | E fwd fuslag |
|---|---|
| Fastener Length | 0.875 |
| Grip Length | Between 0.031 inches and 0.062 inches |
| Hardness Rating | 26.0 rockwell c and 32.0 rockwell c |
| Head Height | 0.141 |
| Head Style | Crowned hexagon |
| Length | 7/8 |
| Material | Steel |
| Material Specification | Mil-b-6812 military specification all material responses |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| Part Name Assigned By Controlling Agency | Adjusting 000 psi-crowned hexagon head 125 machine bolt |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Type 2class 3 federal specification all treatment responses type 2.qq-p-416 qq-p-416 |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.563 inches and 0.594 inches |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNF |
| Thread Series Designator | Unf (fine thread) |
| Thread Size | 1/4 |
| Width Between Flats | 0.438 |
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 NAS428-4A7. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error