M5 x 10 7.5 - 7.9 mm. M5 x 13 7.5 - 7.9 mm. M5 x 20 7.9 - 8.7 mm. Insert Nuts provide a strong, permanent thread for wood and wood based sheet materials. The unique external thread ensures strong resistance against pull out and the flanged head of D-Type inserts prevents splitting of the surfaces and driving the Insert in too far.
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