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BACB30BF4K4
Machine Screw
Description
Fastener Length: 47/64", Thread: 1/4-28, Thread Length: 31/64
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 0.704 inches minimum and 0.734 inches maximum |
| Head Diameter | 0.446 inches minimum and 0.510 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type 1 |
| Length | 47/64 |
| Material | Nickel |
| Screw Material | Nickel alloy k-500 or copper alloy 172 or copper alloy 173 |
| Screw Material Specification | Qq-n-286 class a fed spec 1st material response or qq-c-530 fed spec all material responses |
| Screw Surface Treatment | Cadmium |
| Screw Surface Treatment Specification | Qq-p-416 type 1 class 3 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.444 inches minimum and 0.494 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNF |
| Thread Size | 1/4 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- BACB30BF4K4
- BACB30BF4K6
Cross-reference
No interchangeable or dimensionally similar parts are on record for BACB30BF4K4. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error