female thread

inside thread

The thread on the inside of a pipe, fitting, or machine screw.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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Sort of a Swiss Army knife for guns, the AR-15 tool sports a useful collection of tools: needle-nose pliers, carbide cutter, carbide glass-breaker, carrier scraper, 10-function bolt/firing pin/cam pin scraper, cotter pin puller, bolt override tool, Al & A2 front sight adjuster, interchangeable pin punch, interchangeable hooked pick, 8-32 male and female thread receivers, 3/4" 440c serrated Tanto knife, 12 high-quality bits with bit driver, tap hammer, metal file.
The XT design incorporates revolutionary new guided cylindrical contact zones between the male and female thread joints.
This is due to the fact that the thread has controlled thread truncation at the crest and root, thus ensuring full metal-to-metal contact as the male and female thread flanks make contact.
Both units are made of 420 hardened stainless steel with a 3/4-14 NPT female thread to connect the stuffer box to a molding machine.
The handles are available in a range of sizes and can be ordered from stock with either a male or female thread.
The rotary/random orbital sanding head is offered in a 5/8-in.-11 female thread size to fit most buffers up to 3,200rpm.