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316 Stainless Steel Hex Nut, Plain Finish, ASME B18.2.2, 1-1/4"-7 Thread Size, 1-7/8" Width Across Flats, 1-1/16" Thick: Amazon.com: Industrial & Scientific
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ISO 7411 - 1984Hexagon Bolts For High-Strength Structural Bolting With Large Width Across Flats(Thread Lengths According To ISO 888)—Product Grade C—Property Classes 8.8 And 10.9
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ISO 4775 - 1984Hexagon Nuts For High-Strength Structural Boltinig With Large Width Across Flats—Product Grades B—Property Classes 8 And 10
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