Bolts OST 1 31183-80

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Bolts with semicircular head OST 1 31148-80

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High-strength bolts with hexagonal head with increased size under the key for metal structures GOST R 52644-2006

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Hexagonal head bolts of accuracy class A GOST 7805-70, strength class 8.8; 10.9

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Bolts OST 1 31200-80

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Bolt rivet rods OST 1 30051-89, OST 1 11632-75, OST 1 12141-77, OST 1 12142-77.

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Bolts with reduced size hexagonal head "under the key" with tolerance field of stem diameter f9 and shortened threaded part

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Screws with semi-circular head self-tapping OST 1 31566-80

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Bolt rivet rods OST 1 12141-77

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Bolts with countersunk head 90° with tolerance field of rod diameter h8 and short threaded part of steel 30???? OST 1 31180-80

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Self-tapping screws with semicircular head OST 1 31586-2006

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Bolts with reduced hexagonal head with rod diameter tolerance field p6 and short threaded part OST 1 31138-80

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