screws › close tolerance screws
BACB30LH4-5
Close Tolerance Screw
Description
Close Tolerance Screw
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 0.686 inches minimum and 0.716 inches maximum |
| Grip Diameter | 0.2485 inches minimum and 0.2495 inches maximum |
| Grip Length | 0.302 inches minimum and 0.322 inches maximum |
| Head Diameter | 0.455 inches minimum and 0.510 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type 1 |
| Material | Iron |
| Material Specification | Ams 5731 assn std single material response |
| Min. Tensile Strength (psi) | 95000 pounds per square inch |
| Surface Finish | 32.0 microinches grip, 32.0 microinches threads |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416 ty 2 cl 2 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.364 inches minimum and 0.414 inches maximum |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNF |
Cross-reference
No interchangeable or dimensionally similar parts are on record for BACB30LH4-5. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error