Materials, Finishes and Packaging Options:
Tapered Section Inch Retaining Rings

Materials:

Type	P/N Suffix	Reference Spec	Description
Carbon Steel	(none)	SAE 1060-1090	Standard material for tapered section inch retaining rings.
Stainless Steel 15-7 MO	H	AISI 632, AMS 5520	High strength, precipitation hardened stainless steel. Corrosion resistance similar to 300 series stainless steels. We may substitute 17-7 Stainless for 15-7 on larger rings, depending on material availability. All military spec stainless rings are made from 15-7 MO.
Beryllium Copper	C	Alloy #25	Copper alloy with extremely high resistance to most atmospheric corrosion.

Finishes:

Type	P/N Suffix	Reference Spec	Description
Phosphate	(none)		Default finish for retaining rings and circlips made from carbon steel material.
Dry Phosphate	DP		Phosphate finish with dry to the touch oil.
Plain Finish (no Phospate)	SF		Part supplied without standard phosphate finish. Will negatively affect rings corrosion resistance.
Zinc Dichromate	ZD	ASTM B695, Class 5, Type II	Mechanically applied zinc plating with a dichromate dip. Color varies. Not RoHS Compliant.
Zinc Dichromate + Lacquer	ZDL		Same as zinc dichromate (ZD) with added lacquer for extending corrosion resistance. Not RoHS Compliant.
Zinc Clear Chromate	ZF	ASTM B695, Class 5, Type I	Mechanically applied zinc plating with a clear chromate dip. Color is typically bright silver.
Zinc Trivalent	ZT and ZYT	ASTM B695, Class 5-12 Type 1 & 2	Mechanically applied zinc plating. Plating is RoHS compliant.
Cadmium Dichromate	MD	AMS QQ P-416, Type II, Class 2	Cadmium plating with a dichromate dip. Ideal for surfaces exposed to stagnant water, salt water, marine atmospheres. Not RoHS Compliant.
Cadmium Clear Chromate	MF	AMS QQ P-416, Type II, Class 1	Cadmium plating with an iridite dip (clear). Not RoHS Compliant.
Nickle Plated	NI		Bright silver coating.
Black Oxide	BX	MIL-C-13924 Class 1	Produces a uniform satin black finish on carbon steel. Its corrosion resistance is inferior to phosphate. Cannot be applied to stainless steel.

Packaging:

Type	P/N Suffix	Reference Spec	Description
Bulk	(none)		Default packaging
Tape Stacked	TPD		Rings are stacked and aligned, then special tape is used to hold stack in place. Availability of tape stacking is dependent on ring size and finish.
Stacked	STK		Rings are stacked and aligned, then held in place using either rods, wire or shrink wrap depending on availability and customer preference.
Bagged			Customer bagging options available.