bolts › machine bolts
BACB30LR4U18
Bolt
Description
Fastener Length: 1-9/16", Thread: 1/4-28, Thread Length: 27/64"
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 1.535 inches minimum and 1.565 inches maximum |
| Grip Diameter | 0.249 nominal mils and 0.250 nominal centimeters |
| Grip Length | 1.115 nominal mils and 1.135 nominal centimeters |
| Head Diameter | 1.115 inches minimum and 1.135 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type ii |
| Length | 1 9/16 |
| Material | Iron |
| Material Specification | Ams 5737 assn std single material response |
| Part Name Assigned By Controlling Agency | Bolt, 100 head, cross recess, long thd, clos tolerance |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 fed spec single treatment response |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.425 |
| 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.
Cross-reference
No interchangeable or dimensionally similar parts are on record for BACB30LR4U18. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error