ASTM A563 Grade A Heavy Hex Nut. Low carbon steel. Zinc Plated. Coarse thead (UNC). Note: WAF stands for width across flats.
HHNZ-4-ASTM A563 GR.A-Zinc Finish-Heavy Hex Nuts
ASTM A563 C Nut and SA 563 Grade C Lock/ Hex/ Flange Nuts
Brighton Best 11632-320125 Heavy Hex Nut
1 1/2-6 Coarse Thread A563 Grade A Heavy Hex Nut Low Carbon Steel
HEAVY HEX NUT, A563 A, ZINC CR+3 (INCH)
1 3/4-5 A563-A Heavy Hex Nut H.D.G.
Heavy Hex Nuts - Structural Nuts
2-1/4 -4-1/2 Heavy Hex Nut A563 GR DH Hot-Dip Galv Zinc Coat F2329
600) Heavy Hex Nuts 1/4-20 Zinc Plated Coarse Thread A563 - Lexar
Finish Hex Nut 18-8 Stainless Steel
Hex Nuts Zinc Metric Class 10 Plain - BC Fasteners & Tools Ltd.
China ASTM A563 Gr A Heavy Hex Nuts Suppliers, Manufacturers
HEAVY HEX JAM (Thin) Nuts A563 GRADE A ZINC 3/4-10
Astm A563 Grade C3 A Heavy Hex Nuts
CNJ346.1-P 3/4-6 Heavy Hex Fit-Up Nut - Plain