12-Point Flange Screws

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When you need serious clamp load in a tight footprint, 12-Point Flange Screws deliver. Heat-treated alloy steel at 170,000 psi min with black oxide fights wear and corrosion. The 12 external flats bite hard for maximum torque. Choose fine (SAE) for higher preload, coarse (USS) for faster assembly and dirtier threads.

12-Point Flange Screws

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12-Point Flange Screws

12-point flange screws made from heat-treated alloy steel with a black oxide or plain finish. Coarse USS threads with high tensile strength (170,000 psi) and external wrenching flats. Flange diameter matches socket head cap screws, providing greater clamp force and interchangeability.

Thread Type: Coarse

Item #	Diameter	Thread Size	Package Qty
306404	1/4"	1/4"-20	50	Log in to view price
306504	5/16"	5/16"-18	50	Log in to view price
306605	3/8"	3/8"-16	25	Log in to view price
306708	7/16"	7/16"-14	25	Log in to view price
306805	1/2"	1/2"-13	10	Log in to view price
307008	5/8"	5/8"-11	10	Log in to view price
307210	3/4"	3/4"-10	5	Log in to view price
307416	7/8"	7/8"-9	5	Log in to view price
307616	1"	1"-8	5	Log in to view price
307920	1-1/4"	1-1/4"-12	1	Log in to view price