High-Strength Metric Steel Serrated-Flange Hex Head Screws

35 products

High-Strength Metric Steel Serrated-Flange Hex Head Screws are engineered for critical applications requiring maximum tensile strength and fatigue resistance. Manufactured from premium alloy steel and heat-treated to meet rigorous Grade 8 or Class 10.9/12.9 standards, these fasteners provide exceptional clamping force and structural integrity. Ideal for heavy machinery, automotive suspension, and high-stress industrial environments, they ensure long-term reliability where failure is not an option.

Part Number	Thread Size	Length	Threading	Specifications Met	Thread Type	Head Diameter	Head Height	Material	Tensile Strength	Hardness
0277FA00001	M5	10 mm	Fully Threaded	-	Metric	-	4.3 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00002	M5	12 mm	Fully Threaded	-	Metric	-	4.3 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00003	M5	16 mm	Fully Threaded	-	Metric	-	4.3 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00004	M5	20 mm	Fully Threaded	-	Metric	-	4.3 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00006	M6	10 mm	Fully Threaded	-	Metric	-	5.5 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00005	M6	12 mm	Fully Threaded	-	Metric	-	5.5 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00007	M6	16 mm	Fully Threaded	-	Metric	-	5.5 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00008	M6	20 mm	Fully Threaded	-	Metric	-	5.5 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00009	M6	25 mm	Fully Threaded	-	Metric	-	5.5 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00010	M6	30 mm	Fully Threaded	-	Metric	-	5.5 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00011	M8	12 mm	Fully Threaded	-	Metric	-	7 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00012	M8	16 mm	Fully Threaded	-	Metric	-	7 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00013	M8	20 mm	Fully Threaded	-	Metric	-	7 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00014	M8	25 mm	Fully Threaded	-	Metric	-	7 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00015	M8	30 mm	Fully Threaded	-	Metric	-	7 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00016	M8	35 mm	Fully Threaded	-	Metric	-	7 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00017	M8	40 mm	Fully Threaded	-	Metric	-	7 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00019	M10	16 mm	Fully Threaded	-	Metric	-	7.9 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00020	M10	20 mm	Fully Threaded	-	Metric	-	7.9 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00021	M10	25 mm	Fully Threaded	-	Metric	-	7.9 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00022	M10	30 mm	Fully Threaded	-	Metric	-	7.9 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00018	M10	35 mm	Fully Threaded	-	Metric	-	7.9 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00023	M10	40 mm	Fully Threaded	-	Metric	-	7.9 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00024	M12	20 mm	Fully Threaded	-	Metric	-	8.7 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00025	M12	25 mm	Fully Threaded	-	Metric	-	8.7 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00026	M12	30 mm	Fully Threaded	-	Metric	-	8.7 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00027	M12	35 mm	Fully Threaded	-	Metric	-	8.7 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00028	M12	40 mm	Fully Threaded	-	Metric	-	8.7 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00029	M12	45 mm	Fully Threaded	-	Metric	-	8.7 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00030	M12	50 mm	Fully Threaded	-	Metric	-	8.7 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00031	M16	35 mm	Fully Threaded	-	Metric	-	11.2 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00032	M16	40 mm	Fully Threaded	-	Metric	-	11.2 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00033	M16	50 mm	Fully Threaded	-	Metric	-	11.2 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00034	M16	60 mm	Fully Threaded	-	Metric	-	11.2 mm	Black-Oxide Steel	130000 psi	Rockwell C27
0277FA00035	M16	70 mm	Fully Threaded	-	Metric	-	11.2 mm	Black-Oxide Steel	130000 psi	Rockwell C27