1/4-28 x 3/4 Tamperproof Button Cap Screws Stainless

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1/4-20 Thread Size, 1/2 in Lg, Tamper Resistant Screw - 6LE37

1/4-20 x 5/8 (FT) Coarse Thread 6 Lobe Button Head Cap Screw

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1/4-28 x 3/4 Tamper-Resistant Self Drilling Screws, 25F75UBTZ

Button Head Socket Cap Screw

Socket Head Cap Screws, Socket Head Screws