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Retaining Ring

NSN: 5325-00-982-2559 | Model: MS3211-3-SZ
ITAR Registered seal

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 embedding 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 par (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.

NSN Properties and Flags
NATO Stock Number
Yes - ITAR Controlled
Cross Sectional Shape
Inside Diameter
Between 0.256 inches and 0.266 inches
Casehardening Indicator
Not casehardened
Outside Diameter
0.390 inches
Major Thickness
Between 0.029 inches and 0.033 inches
End Style
Vertex below center
Ring Style
Straight gap
Usage Design
Material Hardness Rating
Between 46.0 Rockwell c and 52.0 Rockwell c
Strength Rating
150000.0 pounds per square inch yield
Steel, federal standard 66, comp 1008 or steel, federal standard 66, comp 1010 or steel, federal standard 66, comp 1012 or steel, federal standard 66, comp 1015 or steel, federal standard 66, comp 1016 or steel, federal standard 66, comp 1017 or steel, federal standard 66, comp 1018 or steel, federal standard 66, comp 1019
Steel comp 1008 or steel comp 1010 or steel comp 1012 or steel comp 1015 or steel comp 1016 or steel comp 1017 or steel comp 1018 or steel comp 1019
Material Specification
Fed standard 66, comp 1008 federal standard 1ST material response and federal standard 66, comp 1010 federal standard 2ND material response and federal standard 66, comp 1012 federal standard 3RD material response and federal standard 66, comp 1015 federal standard 4TH material response and federal standard 66, comp 1016 federal standard 5TH material response and federal standard 66, comp 1017 federal standard 6TH material response and federal standard 66, comp 1018 federal standard 7TH material response and federal standard 66, comp 1019 federal standard 8TH material response
Surface Treatment
Zinc and chromate or zinc
Surface Treatment
Zinc, astm B633, type 2 or zinc plated, MIL-C-81562, type 2, class 2

Pricing and Availability

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NSN 5325-00-982-2559 Datasheet

Supply Class (FSC):
Fastening Devices
Cross Reference:
  • MS3211-3-SZ
  • 2533400PC3
  • 2533400PC3
Cage Codes:
  • Military Standards (CAGE 96906)
  • Bae Systems Land & Armaments L.p. (CAGE 44114)
  • Navair and Navsea Managed (CAGE 10001)
  • 5325-00-982-2559 replaces 5325-00-169-8024
Schedule B & Trade:
  • Schedule B: 9606100000 (NAICS 339993)

    Press-fasteners, snap-fasteners & press-studs & parts therefor

  • SITC: 89983

    Press-fasteners, snap-fasteners and press-studs and parts therefor; buttons

  • End Use: 12640

    Finished textile supplies


N - Indicates there is no data in the humors and the nsn is in a fsc not generally suspected of containing hazardous materials.


U - Precious metal content is unknown


- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:
  • NMFC:

    095190 - Hardware, noi sub 9

  • WCC:

    713 - Metal hardware

  • SHC:

    9 - Other or no special handling required (sh)

  • ADC:

    A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.

  • ACC:

    B - Construction materials: includes paint and related materials, prefabricated building, wood products, metal and composition mater

  • LTL:

    Q - 70.0

  • TCC:

    Z - No special type of cargo code applicable

NSN Management Codes:
  • SOS
  • AAC
  • Quantity per pack
  • Unit of Measure
  • Shelf Life
  • Classification Control
  • Repariability
    This is a nonreparable item. if condemned or economically unserviceable, then dispose at the level authorized replace the item.

Questions & Answers:

What are the historical prices recorded for this stock number?
Historical data shows pricing from $2.71 to $4.52..
Does NSN 5325-00-982-2559 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Army, Department Of The Air Force, Department Of The Navy, Spain, Australia, New Zealand, Republic Of Korea, Denmark, Greece, and Turkey
What is the NIIN of NSN 5325-00-982-2559?
009822559 or 00-982-2559
Does NSN 5325-00-982-2559 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 5325-00-982-2559?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Oct 19, 1966