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3M1278E4D9A
Bolt
Description
Fastener Length: 0-63/64", Hole Diameter: 5/64", Thread: 1/4-28, Thread Length: 27/64"
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Criticality Code Justification | Agav |
| Fastener Length | 0.9725 inches minimum and 1.0025 inches maximum |
| Features Provided | Cetyl alcohol lubricant |
| Head Diameter | 0.388 inches minimum and 0.395 inches maximum |
| Head Style | Flat countersunk |
| Hole Diameter | 0.076 inches minimum and 0.086 inches maximum |
| Hole Quantity | 1 |
| Hole Type | Drilled |
| Internal Drive Style | Torx |
| Length | 0 63/64 |
| Material | Nickel |
| Material Specification | Ams5662 assn std single material response |
| Part Name Assigned By Controlling Agency | Eddie bolt aircraft |
| Shoulder Diameter | 0.2802 inches minimum grip and 0.2807 inches maximum grip |
| Shoulder Length | 0.5025 inches nominal grip |
| Shoulder Shape | Round grip |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Mil-l-87132 type 1 grade b mil spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.2500 |
| Thread Direction | Right-hand |
| Thread Length | 0.425 |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- 3M1278E4D5A
- 3M1278E4D7A
- 3M1278E4D9A
Cross-reference
No interchangeable or dimensionally similar parts are on record for 3M1278E4D9A. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error