nuts › clip-on nuts
BACN10JC4
Locknut
Description
Thread: 1/4-28, self-locking, low height, hexagon, BACN10 series nut
Specifications
| Bearing Surface Type | Chamfered or washer faced |
|---|---|
| Countersink Angle | 120.0 degrees nominal nut |
| Hardness Rating | 36.0 rockwell c minimum and 44.0 rockwell c maximum |
| Locking Feature | Prevailing torque all metal design |
| Lubrication | Dry film lubricant |
| Material | Steel |
| Material Specification | Ams 6322 assn std 1st material response or ams 6350 assn std 1st material response or ams 6378 assn std 1st material response or mil-s-5000 mil spec 2nd material response or mil-s-6049 mil spec 3rd material response or mil-s-18729 assn std 4th material response |
| Nut Height | 0.221 inches maximum |
| Nut Style | Hexagon |
| Specification Data | 81205-bacn10jc manufacturers standard |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416 fed spec single treatment response |
| Temperature Rating | 450.0 deg fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNJF |
| Thread Size | 0.250 |
| Width Across Flats | 0.430 inches minimum and 0.439 inches maximum |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
Interchangeable
Parts that share a National Stock Number or are listed as an alternate for BACN10JC4 — functionally equivalent.
- NAS679A4W Listed alternate 1/4-28 · Steel
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- BACN10JC4C BAC 1/4-28 · Iron
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error