Ansi B 18 Double Sided

A head with no markings is grade 2, one with 3 lines spaced 120 degrees is grade 5, and 6 lines spaced at 60 degree intervals is grade 8. nuts are marked in several different ways—see identification marks for hex and heavy hex nuts below. for other grade and property class specifics, look at these reference charts… hex cap screw specifications

Types of thin track screws nuts and bolts , wholesale wheel thin head bolts and nuts product description hex thin nut ,m12 stainless steel bolt nut washer,m11 m12 m20x1.5 m50 hex jam nuts

Wanyifa titanium din6921 hex head flange bolt (m8x20 millimeter) by wanyifa. 1.0 out of 5 stars 1 rating. price: $6.99 & free shipping: size: m8x20 ... fifty (50) 10-24 zinc plated serrated flange hex lock nuts 5.0 out of 5 stars 14. $6.45. snug fasteners (sng268) fifty (50) 10-32 zinc plated serrated flange hex lock nuts

The preload or thread tension in a fastener is higher with grade 8 quality steel. therefore, grade 8 is typically used for threaded bolts in demanding applications such as automotive suspensions for large trucks and tractors. this table shows the mechanical properties of b7 and grade 8: grade. astm a193 b7.

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