Midwest Fasteners Coarse Thread Black Oxide Steel Socket Cap Screw

Midwest Fasteners Coarse Thread Black Oxide Steel Socket Cap Screw

Midwest Fasteners Coarse Thread Black Oxide Steel Socket Cap Screws are steel fasteners built with an internal hex (socket) drive, a coarse thread pattern, and a black oxide finish, offered across #8-32, #10-24, and 1/4"-20 thread sizes in lengths ranging from 3/8" up to 3-1/2". Every screw in this family shares the same steel construction, coarse thread, socket drive, and black oxide finish, letting a shop or maintenance tech standardize on one fastener family for a machine build or repair job while selecting the exact thread size and length each hole calls for. The low-profile cylindrical head and deep internal hex drive support high installation torque in tight clearances where a wrench or standard hex head will not fit.

Key Features

• Size Range: Available in #8-32, #10-24, and 1/4"-20 thread sizes, with lengths spanning 3/8" to 3-1/2" depending on the size selected, so the correct combination is on hand for the job.
• Material & Finish: Steel construction with a black oxide finish for a durable, low-glare black surface across every size in the family.
• Drive Type: Internal hex (socket) drive for use with a hex key or hex bit, delivering high installation torque in confined spaces where external wrenching clearance is limited.
• Thread: Coarse thread pattern suited to general-purpose fastening into tapped holes and nuts across all three thread sizes in the family.
• Product Type: Socket head cap screw with a low-profile cylindrical head, a common choice for machine and equipment assembly as well as fixture and jig work.
• Color: Black, matching the black oxide finish for a consistent appearance across assemblies no matter which thread size or length is ordered.

Technical Specifications

• Drive Type: Hex

Typical Applications

• Machine and equipment assembly where a socket head cap screw is specified
• General maintenance and repair work requiring a steel cap screw with a hex socket drive
• Fixture and jig building that benefits from a low-profile socket head and strong internal hex drive
• Replacement fastener for assemblies originally fitted with black oxide socket cap screws
• Stocking multiple thread sizes and lengths on hand for shops running mixed equipment and machinery

Why Midwest Fasteners?

Midwest Fasteners supplies steel socket cap screws with a consistent black oxide finish and coarse thread across the full #8-32, #10-24, and 1/4"-20 size range, in lengths from 3/8" up to 3-1/2". The internal hex drive and steel construction make this family a practical choice for shops and techs who need a reliable, uniform-finish fastener on hand in the exact thread size and length a job requires, without having to mix and match finishes or drive styles across a project.