.812 EXTERNAL RETAINING RING PHOSPHATE BPUB while the DFAR black oxide

while the DFAR black oxide finish provides additional protection against wear and tear

These screws are typically used with pocket hole joinery

These screws are made from 300 series stainless steel

which is a corrosion-resistant material

.812 EXTERNAL RETAINING RING PHOSPHATE BPUB while the DFAR black oxide**812 External Retaining Ring Phosphate** The 812 External Retaining Ring Phosphate is a high performance phosphate ester designed for use in extreme pressure (EP) applications. It is formulated with a blend of anti wear and extreme pressure additives to provide excellent protection against wear, scuffing, and pitting. The 812 External Retaining Ring Phosphate is also highly resistant to oxidation and thermal degradation, making it suitable for use in