FASTENER IDENTIFICATION GUIDE

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SPECIFICATION AND MATERIAL CODES ASTM A 194 Grade 2 Heavy Series 65601 Galv. 67703 Lock 67701 Galv. Lock 67705 ASTM A 194 Grade 2H Heavy Series 65602 Galv. 67704 Lock 67702 Galv. Lock 67706 ASTM A 194 Grade 8 Type B Regular Series and Heavy Series 67707 Lock 67709 ASTM A 194 Grade 8F Type B Regular Series and Heavy Series 67708 Lock 67710 ASTM A563 Grade A Regular ‘series and Heavy Series 67728 Galv. 67729 Lock 67730 Galv. Lock 67730 Cad. Plated 67725 ASTM A 563 Grade C Heavy Series 65603 Galv. 67711 Lock 67712 Galv. Lock 67712 INSTRUCTIONS FOR <strong>IDENTIFICATION</strong> OF NUTS GRADE MARKING ) 2 X 2H X 8B X 8FB X ) X ) REQUIRED MARKINGS Symbol for identification of grade, i.e., “2”.. Manufacture’s identification mark, e.g., “2”. Symbol for identification of grade, i.e., “2H”. (“H” means nut was heat-treated.) Manufacturer’s identification mark, e.g., “X”. Symbol for identification of grade and type i.e., “B8”. (“B” means nut was machined from bar stock.) Manufacturer’s identification mark, e.g., “X”. Symbol for identification of grade and type, i.e., “8FB”. (“B” means nut was machined from bar stock.) Manufacturer’s identification mark, e.g., “X”. No required identification mark.. Three equally spaced circumferential lines on one face. Manufacturer’s identification mark, e.g., “X”. Markings depressed if applied to bearing surface. Typical: Nut Sleeve--67723 Stain. Steel--67731 Stain. Steel Lock--67732
SPECIFICATION AND MATERIAL CODES ASTM A 563 Grade C3 Heavy Series 65604 Galv. 67733 Lock 65607 ASTM A 563 Grade D Heavy Series 65605 Galv. 67716 Lock 677718 Galv. Lock 67720 ASTM A 563 Grade DH Heavy Series 65606 Galv. 67717 Lock 67719 Falv. Lock 67721 ASTM A 563 Grade DH3 Heavy Series 67734 INSTRUCTIONS FOR <strong>IDENTIFICATION</strong> OF NUTS GRADE MARKING ) X ) D X DH X DH3 X ) 3 REQUIRED MARKINGS Three equally spaced circumferential lines on one face. “3” on one face Other distinguishing marks indicating nut is atmospheric corrosion resistant and of a weathering type on one face (at option of man- facturer). Manufacture’s identification mark, e.g., “X”. Markings depressed if applied to bearing surface. Symbol for identification of grade, i.e., “D”, on one face. Manufacturer’s identification mark, e.g., “X”. Markings depressed if applied to bearing surface. Symbol for identification of grade, i.e., “DH”, on one face. Manufacturer’s identification mark, e.g., “X”. Markings depressed if applied to bearing surface. Symbol for identification of grade, i.e., “DH3”, on one face. Other distinguishing marks indicating nut is atmospheric corrosion resistant and of a weathering type on one face (at option of man- facturer). Manufacturer’s identification mark, e.g., “X”. Markings depressed if applied to bearing surface. Typical: Nut Sleeve--67723 Stain. Steel--67731 Stain. Steel Lock--67732
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