Mutual Screw & Supply

5/16-18 X 3-1/2" 機械螺絲 | 平頭一字驅動 | 普通鋼 (100 / 包)

5/16-18 X 3-1/2" 機械螺絲 | 平頭一字驅動 | 普通鋼 (100 / 包) - Main image
$25.2 $38.77 In stock

無鍍層(未塗層)鋼製機械螺絲,適用於不需要耐腐蝕性的室內一般緊固用途。

規格

  • 尺寸: 5/16-18 3-1/2"
  • 驅動類型: 一字
  • 頭部樣式: 平頭
  • 材質: 普通鋼
  • 螺紋: 5/16-18 UNC(粗牙)

產品特點

  • 機械螺絲,適用於搭配螺帽或攻牙孔
  • 平頭外形
  • 一字驅動
  • 普通鋼結構
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Customer Reviews (5.0 / 5 · 5 reviews)

Matthew S. ★★★★★

These are the exact length I needed for a few heavy brackets; the 3-1/2" flat head sits perfectly flush in the countersunk hole. The slotted drive grabbed my screwdriver nicely without any cam-out. Exactly what you'd expect from a solid steel machine screw.

Ruby ★★★★★

Slotted head on these 5/16-18 machine screws made it easy to get good torque with a standard flathead screwdriver. Exactly 3-1/2 inches long, which worked perfectly for a furniture repair where I needed a bit more reach. Plain steel is fine for my indoor shop jig.

Aurora ★★★★★

I needed a longer fastener for a jig I was building, and these 3-1/2" slotted flat heads threaded in smoothly without any binding. The plain steel finish looks standard, which is fine for my indoor shop project.