Grade 9 Bolts Specifications

Grade 9 yellow zinc chromate 180 000 psi.

Grade 9 bolts specifications.

Wholesale grade l9 fasteners. Use with astm a325 structural bolts. Strength is similar to grade 5. 5mm 100mm.

L9 pfc9 or f911. Grade 9 steel hex head screws are marked with nine radial lines. Hex head cap screws are typically used to create a bolted joint in which a threaded shaft exactly fits a corresponding tapped hole or nut. Special alloy steels and heat treatments are used to achieve 180 000 psi tensile strength.

180 000 psi tensile strength. The screw head is designed to fit a ratchet or spanner torque wrenches allowing you to tighten the screw to your exact specifications. They are similar to grade 8 but have a tensile strength of 180 000 psi compared to grade 8 at 150 000 psi. The bolt is stressed up to the proofload value and if there is no deformation elongation or fracture then the bolt is deemed to have passed.

Grade 9 hex head bolts. The highest metric. Grade 9 steel. They are domestically made in the usa and fabricated from high grade alloy steel providing extremely high mechanical strength from an off the shelf fastener.

The grade 9 bolting system develops the highest clamp force available in a standard bolt nut assembly and it is frequently referred to by one of the folowing trade names. Similar to grade 5. 16mm 72mm. The zinc yellow chromate plating resists corrosion in wet environments.

Grade 9 cap screws hex bolts. Class 10 9 alloy steel quenched and tempered. Yield strength mpa min. Similar to grade 2.

Similar to grade 8. 1 proofload is the published number that full size headed bolts are tested to. Use them for heavy duty stamping applications as well as earth moving machinery such as bulldozers and excavators. Our strongest screws these grade 9 steel screws have a tensile strength of 180 000 psi about 20 stronger than our high strength steel screws.

Proof load mpa min. For bolting specifications that do not have a published proofload it is usually calculated at 92 of minimum yield strength. Tensile strength mpa class 8 8 medium carbon steel quenched and tempered. Head marking class and material nominal size range mm mechanical properties.

F911 or l9 zinc yellow plated. Use with astm a325 structural bolts. All sizes below 16mm.