ASME B18.3 SOCKET HEAD CAP SCREW — 5/16: head diameter 11.61–11.91 mm, head height 7.77–7.92 mm, pitch 18 TPI. Material Grade 5, surface Plain, tensile strength 119,946 psi. Dimensional tolerances per ASME B18.
BOLTS
| Head Diameter (A) | 11.61–11.91 mm |
| Head Height (H) | 7.77–7.92 mm |
| Pitch | 18 TPI |
| Tensile Strength | 119,946 psi |
| Material | Grade 5 |
| Surface | Plain |
Dimensional tolerances per ASME B18.3-2003 Table 1A. Hex socket across flats (J): 1/4 in, controlled by go / no-go gauge per Mandatory Appendix I.
Grade Grade 5 · Plain
Grade Grade 5 · Zinc
Grade Grade 5 · HDG
Grade Grade 8 · Plain
Grade Grade 8 · Zinc
Grade Grade 8 · HDG
Contact engineering team for verified B2 data reference.
ASME B18.3 Socket Head Cap Screw per ASME B18.3 specification, available in Grade 5 grade with Plain finish. Engineered for industrial OEM applications requiring 827.0 MPa tensile strength and reliable long-term fastening performance.
7.77–7.92 mm (nominal with the tolerance range shown above)
11.61–11.91 mm (nominal with the tolerance range shown above)
18 TPI
Material: Grade 5, surface: Plain, tensile strength: 119,946 psi.
ASME B18.