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280PCS #4-40 UNC 304-Stainless Steel Flat Head Countersunk Hex Socket Cap Bolts Screws, Nuts Assortment Kit, Includes 9 Most Common Sizes (#4-40×5/8", 3/4", 7/8", 1", 1/2", 3/8", 5/16", 1/4", 3/16") : Amazon.in: Electronics
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10/50pcs UNC US 2#-56 4#-40 6#-32 8#-32 10#-24 304 A2-70 Stainless Steel Flat Head Socket Cap Screw Countersunk Head Bolt - AliExpress
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Cross Recessed Flat Head Tapping Screws, 3 Models Grooved C-1 Shape【1-3,500 Pieces Per Package】 from SUNCO | MISUMI
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4-40 UNC x 1/4 inch Socket Countersunk Screws (ANSI B18.3) - A2 Stainless Steel: Accu.co.uk: Precision Screws
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