Overview
Mfr description
67201863 67201863 4-40 X 5/16 PH SL MACH
- External tooth washers have serrations on the outside diameter that grip both the fastener and workpiece to lock into place
- Pan head types have cylindrical heads with rounded edges and flat bearing surfaces
- Their low head height and large diameter provide increased driving power
- Slotted drive types are used with flat-blade drivers
- They have one linear slot that runs the length of the head
- Drivers must be centered in the slot during tightening or they will slip out and damage the fastener
- Steel is strong and durable but less corrosion resistant than stainless steel
- To improve its resistance to corrosion, it may receive additional finishes and coatings.
Specifications
- Thread Size#4-40
- Drive TypeSlotted
- MaterialSteel
- Finish CoatingZinc-Plated
- Fastener StandardASME B18.13a; SAE J82
- Head TypePan
- Length Measurement TypeLength Under Head
- Material GradeJ82
- Thread StandardUNC
- Washer TypeExternal Tooth
Compliance & Safety Data
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