10.9 grade bolt countersunk head hexagon socket head screws black DIN7991 flat head inner 6 corner high strength screws

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Product Info
BrandHongda
Head typeHexagonal convex beak
Material grade10.9 level
Nail TypeScrew
Nominal length90
Standard No.DIN7991
Surface treatmentBlack

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Tags: ., grade, bolt, countersunk, head, hexagon, socket, screws, black, DIN, flat, inner, corner, high, strength