riv.w.countersunk head DIN 661, *excepted
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n10020661.10
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n10020661.90
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n10025661.10
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n10030661.10
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n10030661.40
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n10040661.40
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n10040661.60
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n10040661.68
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n10050661.10
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n10050661.60
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n10050661.68
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n10060661.10
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n10080661.40
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n10080661.48
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n12020661.10
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n12020661.40
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n12030661.10
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n12030661.40
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n12040661.10
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n12040661.40
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n12050661.10
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n12050661.40
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n12060661.10
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n12060661.40
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n14025661.60