Socket head cap screw markings 1 Converted from megapascals (MPa) Inch has one strength level, alloy steel. Metric has two strength levels, property classes 12.9 and 8.8. 8.8 is about 30% weaker. 8.8 is also 20 – 50% less expensive. Caution: Don’t substitute 8.8 for 12.9. Socket head cap screws heremonly used in machine assembly, especially for removable panels and parts. They have a round cap with a hex head and are tightened with a socket wrench drive. Choose the right cap head for your specific application. Technical Reference Guide Table of Contents Subject Page # Fastener Material Selection 1 Mechanical Properties . Tapping screws and socket set screws require a torsional test. Other Mechanical Properties . SAE J429 Grade 1, ASTM A307 Grade A are low carbon steel strength grades with essentially the same

DIN 912 / ISO 4762 Socket Head Cap Screws . 8.8 Grade Bare Steel/Zinc Plated; 12.9 Grade Bare Steel/Zinc Plated; 12.9 Grade Bare Steel FINE Thread; A2/A4 Stainless Steel; DIN 7991 / ISO 10642 Flat Head Countersunk Socket . DIN 912 / ISO 4762 Socket Cap Screw Grade 12.9 . Grade 8 Socket Head Cap Screws. Fastener Warehouse is a wholesale distributor of industrial grade fasteners and construction supplies for Construction, Industrial, Marine, and Auto Industries. These socket head cap screws are stronger than your grade 8 bolt. Rated at 170,000 psi tensile strength. We plate our socket cap screws zinc II yellow for rust resistance. These socket head cap screws are stronger than your grade 8 bolt. Rated at 170,000 psi tensile strength. We plate our socket cap screws zinc II yellow for rust resistance.

Socket head cap screws heremonly used in machine assembly, especially for removable panels and parts. They have a round cap with a hex head and are tightened with a socket wrench drive. Choose the right cap head for your specific application. Socket Head Cap Screw . Socket low head cap screw , shoulder screw , countersunk socket head screw , button head socket screw , socket set screw , taper pressure plug - Metric Inch. Shop a large range of socket grade 8 alloy steel flat head cap screw at MSC Industrial Supply. MSC Industrial supply is here to support all your metalworking and maintenance repair needs with over 1 million products in stock and ready to ship today!

Socket screws ; Socket cap . Socket caps have a small cylindrical head with tall vertical sides. Allen (hex socket ) drive is a six-sided recess for use with an allen wrench (hex key).