ASME B18.3 SOCKET HEAD CAP SCREW — 1/4

ASME B18.3 SOCKET HEAD CAP SCREW — 1/4: head diameter 9.27–9.52 mm, head height 6.2–6.35 mm, pitch 20 TPI. Material Grade 5, surface Plain, tensile strength 119,946 psi. Dimensional tolerances per ASME B18.

BOLTS

High-performance industrial fastener under ASME B18.3 standard.
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Material Grade Filter

Dimensions

Head Diameter (A)9.27–9.52 mm
Head Height (H)6.2–6.35 mm
Pitch20 TPI
Tensile Strength119,946 psi
MaterialGrade 5
SurfacePlain

Dimensional tolerances per ASME B18.3-2003 Table 1A. Hex socket across flats (J): 3/16 in, controlled by go / no-go gauge per Mandatory Appendix I.

Grades

Grade 5

Grade Grade 5 · Plain

Grade 5

Grade Grade 5 · Zinc

Grade 5

Grade Grade 5 · HDG

Grade 8

Grade Grade 8 · Plain

Grade 8

Grade Grade 8 · Zinc

Grade 8

Grade Grade 8 · HDG

← Back to ASME B18.3 SOCKET HEAD CAP SCREW → B3 Grade Matrix → Engineering Center (C)

Need technical support?

Contact engineering team for verified B2 data reference.

Standard References: Official ASME standards · ASME B18.3 reference (fasteners.eu)

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.

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Frequently asked questions

What is the head height of ASME B18.3 SOCKET HEAD CAP SCREW — 1/4?

6.2–6.35 mm (nominal with the tolerance range shown above)

What is the head diameter of ASME B18.3 SOCKET HEAD CAP SCREW — 1/4?

9.27–9.52 mm (nominal with the tolerance range shown above)

What is the thread pitch of ASME B18.3 SOCKET HEAD CAP SCREW — 1/4?

20 TPI

What material, finish and strength does this page list?

Material: Grade 5, surface: Plain, tensile strength: 119,946 psi.

Which tolerance basis is used on this page?

ASME B18.