M4-0.7X6 ISO7045 Metric Phil Pan 410SS Internal Washer Sems MS Ful Thread A2 Stainless Steel (Pack Qty 2,500) BC-MI46IPPA2

The washer/screw assembly makes this a locking screw with the washer providing the locking action. Machine pre-assembly provides cost savings to the end user. The internal tooth variety is recommended when it is desirable to hide the teeth for appearance or to prevent snagging Screw - Internal Tooth Lockwasher- Class 4.8 Steel: C1008 or equivalent carbon steel. C1050 Carbon Steel. Screw - Internal Tooth Lockwasher- Stainless: A2 StainlessYou may also like 12-8X5/8 Phillips Pan Deep Thread Screw Type 17 point Full Thread Black Oxide and Oil (Pack Qty 4,000) BC-1210DPP17B.