Amazon.com: Allen Head Screws
Hex Socket Head Cap Screw Metric Thread Hexagon Allen Machine Bolt M2.5 M3 M4 M5 M6 M8 Metal Standard Fastener Hardware Assortment Kit Set 135Pcs 304 Stainless Steel M2.5-M8 4.6 out of 5 stars 197 $19.99 $ 19 . 99
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