Grade 14.9 high-strength hexagon socket head cap screw

Grade 14.9 High-Strength Hexagon Socket Head Cap Screws

EGM High strength hexagon socket head cap screw (14.9 CAP) — manufactured using BAOGANG domestically produced steel in China.

Grade 14.9 boasts a tensile strength of 1,400 MPa, making it the world’s highest strength screw available as a standard product.

Tensile strength: 1,400 MPa

Guaranteed load stress: 1,120 MPa

Yield strength: 1,260 MPa

Hardness: HRC 44–50

Elongation: Minimum 9% (10.9 class)

Black oxide 14.9 grade socket cap screws size range M3 to M24

Grade 14.9 high-strength socket head cap screws - 1400 MPa tensile strength

Technical Introduction

High strength:
Under the premise of ensuring the tensile strength of 1,400 MPa, the elongation rate of more than 9% can be achieved, with the same toughness as 10.9 grade.

High toughness:
The 14.9 Cap bolt is stiff without being brittle. The bolt can be bent by more than 60 degrees, providing great safety under huge loads.

Anti-delayed fracture:
Using 40CrMoV steel from BaoGang, China, greatly improves the resistance to delayed fracture.

High temperature resistance:
85% of the tensile strength can be maintained in an environment of 400°C.

40CrMoV Chemical Composition (%)

Grade	C	Si	Mn	P	S	Others
40CrMoV	0.36–0.44	0.05–0.20	0.25–0.40	≤0.015	≤0.008	Cr: 0.90–1.10, Mo: 0.60–0.80, Al: 0.010–0.025, V: 0.15–0.20, Cu ≤0.15, O ≤0.0025, N ≤0.0080, H ≤0.0002

High-Strength Bolt Comparison Table

Strength Grade	Tensile Strength (N/mm²)	Yield Strength (N/mm²)	Guaranteed Stress (N/mm²)	Elongation (%)
8.8	800	640	580	12
10.9	1,000	900	830	9
12.9	1,200	1,080	970	8
14.9	1,400	1,260	1,120	9

Size Table — Class 14.9 Socket Head Cap Screw (Unit: mm)

ISO 4762 / DIN 912 / GB 70.1-85

DIN 912 Grade 14.9 Socket Cap Screw dimensional drawing - ISO 4762 GB70.1

d (Shaft Dia.)	p (Pitch)	dk (Head Dia.)		k (Head Height)		da Max.	ds (Body Dia.)		e (Nominal)	s (Key Size)			t Min.
d (Shaft Dia.)	p (Pitch)	Max.	Min.	Max.	Min.		Max.	Min.		Nominal	Max.	Min.
M3	0.5	5.68	5.32	3	2.86	3.6	3	2.86	2.873	2.5	2.560	2.520	1.3
M4	0.7	7.22	6.78	4	3.82	4.7	4	3.82	3.443	3	3.080	3.020	2.0
M5	0.8	8.72	8.28	5	4.82	5.7	5	4.82	4.583	4	4.095	4.020	2.5
M6	1.0	10.22	9.78	6	5.70	6.8	6	5.82	5.723	5	5.095	5.020	3.0
M8	1.25	13.27	12.73	8	7.64	9.2	8	7.78	6.863	6	6.095	6.020	4.0
M10	1.5	16.27	15.73	10	9.64	11.2	10	9.78	9.149	8	8.115	8.025	5.0
M12	1.75	18.27	17.73	12	11.57	14.2	12	11.73	11.43	10	10.115	10.025	6.0
M16	2.0	24.33	23.67	16	15.57	18.2	16	15.73	16	14	14.142	14.032	8.0
M20	2.5	30.33	29.67	20	19.48	22.4	20	19.67	19.44	17	17.115	17.025	10.0
M24	3.0	36.39	35.61	24	23.48	26.4	24	23.67	23.44	19	19.115	19.025	12.0

Stock & Price List

Standard sizes in stock. Custom manufacturing for bulk orders accepted.

Download Price / Pkg / Weight PDF

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M6 Grade 14.9 Cap Screw	M8 Grade 14.9 Cap Screw	M12 Grade 14.9 Cap Screw
M14 Grade 14.9 Cap Screw	M16 Grade 14.9 Cap Screw	M20 Grade 14.9 Cap Screw
M24 Grade 14.9 Cap Screw

Product Showcase

FULLERKREG Grade 14.9 DIN 912 socket cap screws product showcase

Grade 14.9 high-strength hexagon socket head cap screw