screws › close tolerance screws
BACB30LU8-54
Screw
Description
Fastener Length: 4-1/8", Thread: 1/2-20, Thread Length: 47/64"
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 4.0950 inches minimum and 4.1250 inches maximum |
| Grip Diameter | 0.4985 inches minimum and 0.4995 inches maximum |
| Grip Length | 3.3650 inches minimum and 3.3850 inches maximum |
| Head Diameter | 0.927 inches minimum and 1.019 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type 1 |
| Length | 4 1/8 |
| Material | Steel |
| Material Specification | Mil-s-5000 mil spec 1st material response or mil-s-6049 mil spec 2nd material response or ams6322 assn std 2nd material response |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416, type 2 class 2 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.5000 |
| Thread Direction | Right-hand |
| Thread Length | 0.735 |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series Designator | UNJF |
| Thread Size | 1/2 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- BACB30LU8-23X
- BACB30LU8-29X
- BACB30LU8-54
Cross-reference
No interchangeable or dimensionally similar parts are on record for BACB30LU8-54. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error