MS 16624-1137 Retaining Rings

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	Specifications Met Specifications Met	Show

Mil. Spec.

MS16624

	Specifications Met Specifications Met	Hide

Warning: Products have one, but not necessarily all, of the selected characteristics.

	System of Measurement System of Measurement

Inch

	For OD For OD

	Retaining Ring Style Retaining Ring Style

	Standard

	Material Material

Steel

Stainless Steel

	For Groove Width For Groove Width

	Retaining Ring Type Retaining Ring Type

	External

	For Groove Diameter For Groove Diameter

	Ring Thickness Ring Thickness

	Ring ID Ring ID

	Minimum Hardness Minimum Hardness

Rockwell C44

Rockwell C46

Rockwell C48

	Magnetic Properties Magnetic Properties

Magnetic

	Finish Finish

Cadmium Plated

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

	Thrust Load Capacity Thrust Load Capacity

Less than 10,000 lbs.

10,000 to 19,999 lbs.

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Passivation Passivation

Passivated

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

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38 Products

Mil. Spec. External Retaining Rings

These rings meet military specification MS16624. Open them with retaining ring pliers (sold separately), pass them over the end of a shaft, and release to spring into the groove. Ring ID is measured with the ring uninstalled.

1060-1090 spring steel rings are an economical choice with good strength. The cadmium-plated finish adds some corrosion resistance.

15-7 PH stainless steel rings are high strength with good corrosion resistance. Rings are passivated for added protection against corrosion.

Thrust load capacity, also known as PR, is based on using a shaft that is harder than the ring.

For technical drawings and 3-D models, click on a part number.

	For Groove		Ring
For OD	Dia.	Wd.	ID	Thick.	Min. Hardness	Thrust Load Capacity, lbs.	Magnetic Properties	Specifications Met	Pkg. Qty.		Pkg.
Cadmium-Plated 1060-1090 Spring Steel
1/4"	0.23"	0.03"	0.225"	0.025"	Rockwell C48	590	Magnetic	MS16624	25	000000000	00000
5/16"	0.29"	0.03"	0.281"	0.025"	Rockwell C48	750	Magnetic	MS16624	25	000000000	0000
3/8"	0.352"	0.03"	0.338"	0.025"	Rockwell C48	880	Magnetic	MS16624	25	000000000	0000
7/16"	0.412"	0.03"	0.395"	0.025"	Rockwell C48	1,030	Magnetic	MS16624	25	000000000	0000
1/2"	0.468"	0.04"	0.461"	0.035"	Rockwell C48	1,670	Magnetic	MS16624	25	000000000	0000
9/16"	0.53"	0.04"	0.521"	0.035"	Rockwell C48	1,870	Magnetic	MS16624	25	000000000	0000
5/8"	0.588"	0.04"	0.579"	0.035"	Rockwell C48	2,090	Magnetic	MS16624	25	000000000	0000
11/16"	0.646"	0.047"	0.635"	0.042"	Rockwell C48	3,450	Magnetic	MS16624	25	000000000	00000
3/4"	0.704"	0.047"	0.693"	0.042"	Rockwell C48	3,750	Magnetic	MS16624	25	000000000	00000
13/16"	0.762"	0.047"	0.751"	0.042"	Rockwell C48	4,060	Magnetic	MS16624	10	000000000	0000
7/8"	0.821"	0.047"	0.81"	0.042"	Rockwell C48	4,360	Magnetic	MS16624	10	000000000	0000
15/16"	0.882"	0.047"	0.867"	0.042"	Rockwell C48	4,720	Magnetic	MS16624	10	000000000	0000
1"	0.94"	0.047"	0.925"	0.042"	Rockwell C48	5,020	Magnetic	MS16624	10	000000000	0000
1 1/8"	1.059"	0.056"	1.041"	0.05"	Rockwell C48	6,690	Magnetic	MS16624	1	000000000	0000
1 1/4"	1.176"	0.056"	1.156"	0.05"	Rockwell C48	7,460	Magnetic	MS16624	1	000000000	0000
1 3/8"	1.291"	0.056"	1.272"	0.05"	Rockwell C48	8,220	Magnetic	MS16624	1	000000000	0000
1 1/2"	1.406"	0.056"	1.387"	0.05"	Rockwell C48	8,930	Magnetic	MS16624	1	000000000	0000
1 5/8"	1.529"	0.068"	1.583"	0.062"	Rockwell C46	12,000	Magnetic	MS16624	1	000000000	0000
1 3/4"	1.65"	0.068"	1.618"	0.062"	Rockwell C46	12,900	Magnetic	MS16624	1	000000000	0000
15-7 PH Stainless Steel
1/4"	0.23"	0.03"	0.225"	0.025"	Rockwell C44	590	Magnetic	Fed. Spec. QQ-P-35, MS16624	10	000000000	00000
5/16"	0.29"	0.03"	0.281"	0.025"	Rockwell C44	750	Magnetic	Fed. Spec. QQ-P-35, MS16624	10	000000000	00000
3/8"	0.352"	0.03"	0.338"	0.025"	Rockwell C44	880	Magnetic	Fed. Spec. QQ-P-35, MS16624	10	000000000	00000
7/16"	0.412"	0.03"	0.395"	0.025"	Rockwell C44	1,030	Magnetic	Fed. Spec. QQ-P-35, MS16624	5	000000000	0000
1/2"	0.468"	0.04"	0.461"	0.035"	Rockwell C44	1,670	Magnetic	Fed. Spec. QQ-P-35, MS16624	5	000000000	0000
9/16"	0.53"	0.04"	0.521"	0.035"	Rockwell C44	1,870	Magnetic	Fed. Spec. QQ-P-35, MS16624	5	000000000	0000
5/8"	0.588"	0.04"	0.579"	0.035"	Rockwell C44	2,090	Magnetic	Fed. Spec. QQ-P-35, MS16624	5	000000000	0000
11/16"	0.646"	0.047"	0.635"	0.042"	Rockwell C44	3,450	Magnetic	Fed. Spec. QQ-P-35, MS16624	5	000000000	0000
3/4"	0.704"	0.047"	0.693"	0.042"	Rockwell C44	3,750	Magnetic	Fed. Spec. QQ-P-35, MS16624	5	000000000	00000
13/16"	0.762"	0.047"	0.751"	0.042"	Rockwell C44	4,060	Magnetic	Fed. Spec. QQ-P-35, MS16624	5	000000000	00000
7/8"	0.821"	0.047"	0.81"	0.042"	Rockwell C44	4,360	Magnetic	Fed. Spec. QQ-P-35, MS16624	5	000000000	00000
15/16"	0.882"	0.047"	0.867"	0.042"	Rockwell C44	4,720	Magnetic	Fed. Spec. QQ-P-35, MS16624	5	000000000	00000
1"	0.94"	0.047"	0.925"	0.042"	Rockwell C44	5,020	Magnetic	Fed. Spec. QQ-P-35, MS16624	5	000000000	00000
1 1/8"	1.059"	0.056"	1.041"	0.05"	Rockwell C44	6,690	Magnetic	Fed. Spec. QQ-P-35, MS16624	1	000000000	0000
1 1/4"	1.176"	0.056"	1.156"	0.05"	Rockwell C44	7,460	Magnetic	Fed. Spec. QQ-P-35, MS16624	1	000000000	0000
1 3/8"	1.291"	0.056"	1.272"	0.05"	Rockwell C44	8,220	Magnetic	Fed. Spec. QQ-P-35, MS16624	1	000000000	0000
1 1/2"	1.406"	0.056"	1.387"	0.05"	Rockwell C44	8,930	Magnetic	Fed. Spec. QQ-P-35, MS16624	1	000000000	0000
1 5/8"	1.529"	0.068"	1.583"	0.062"	Rockwell C44	12,000	Magnetic	Fed. Spec. QQ-P-35, MS16624	1	000000000	0000
1 3/4"	1.65"	0.068"	1.618"	0.062"	Rockwell C44	12,900	Magnetic	Fed. Spec. QQ-P-35, MS16624	1	000000000	0000