Boeing BACB30LR4-8 Bolt

The BACB30LR4-8 bolt is engineered with a UNJF thread series, ensuring compatibility across a range of applications. With a fastener length between 0.910 inches and 0.940 inches and a grip length of 0.490 inches to 0.510 inches, this bolt is constructed from Iron Alloy 660, adhering to AMS5737 standards for material classification. The grip diameter is precisely measured between 0.2485 inches and 0.2495 inches, while the head diameter ranges from 0.455 inches to 0.510 inches. Featuring a flat countersunk head style and a countersink angle of 99.0 degrees to 101.0 degrees, this bolt enhances functionality in several settings. Designed with a nominal thread diameter of 0.250 inches and a thread quantity of 28 per inch, it operates with a right-hand thread direction and includes a cross recess type 1 internal drive style. The surface finish is maintained at 32.0 microinches for threads, ensuring smooth operation.