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Cross Reference

These part numbers have the same form, fit, and function as mil-r-21248
Item Number Cage
MS16633-1018 81349
MIL-R-21248 81349
9419254 1LW55
FD9005-3 98313

Technical Definition

Ring, Retaining, also referenced with federal logistics item name code 07623 - A resilient metal item, circular or nearly circular, which is designed to be inserted into an internal or external groove and retained by its own spring action, or it may have external prongs or projections designed to be inserted into a hole and retained by spring action of the prongs which grip by imbedding into the material. for items having internal prongs which perform the same function, see push on nut. it is used to keep and/or lock a part(s) in position, as a ball bearing on a shaft or in a housing. see also clip, retaining and pin, lock. excludes ring, connecting, round.

Q & A

Part number MILR21248
What are the historical prices for part number MIL-R-21248?
No pre-dated pricing for this NSN could be found.
Does this part number MIL-R-21248 have a shelf life?
No. There is no shelf life applicable for this part.
Does this part number MIL-R-21248 require Demilitarization?
Non-usml/non-ccli - no demil or dod tsc required. department of commerce may impose licensing requirements to certain destinations. (note 9).
Is part number MIL-R-21248 ITAR controlled?
No. This item is not ITAR Controlled.
What is the NSN for part number MIL-R-21248?
Who are the manufacturers of MIL-R-21248 and NSN 5325-00-010-2509?
  • Military Specifications (CAGE 81349)
  • Remy, Inc. (CAGE 1LW55)
  • Davis Aircraft Products Co., Inc. (CAGE 98313)


Description: Retaining Ring
Part Number MIL-R-21248 MIL R 21248


steel,sae 1065 to 1090

AAGR Cross Sectional Shape
AARX Inside Diameter
From 0.142" and 0.146"
AASG Casehardening Indicator
Not casehardened
ABMC Major Thickness
From 0.023" and 0.028"
ACXD Ring Style
ALBY Usage Design
ALME Material Hardness Rating
From 48.0 rockwell c and 53.0 rockwell c
MATL Material
Steel,sae 1065 to 1090
MATT Material
Steel,sae 1065 to 1090
SFTT Surface Treatment
Cadmium and dichromate
SURF Surface Treatment
Cadmium, dichromate treated
National Stock Number (NSN): 5325-00-010-2509


Solicitation Description Qty UOM Close Date
SPE5E417T3601 Ring, Retaining 334 EA 12/20/2016