Model: 21-381-1

Retaining Ring

Properties:

Cross Sectional Shape

Rounded corners

Inside Diameter

Between 1.406 inches and 1.437 inches

Casehardening Indicator

Not casehardened

Outside Diameter

Between 1.594 inches and 1.625 inches

Major Thickness

Between 0.091 inches and 0.095 inches

End Style

Vertex outside periphery

Ring Style

Straight gap

Usage Design

External

Material Hardness Rating

Between 42.0 rockwell c and 47.0 rockwell c

Material

Steel, fed, qq-s-633, amend. 2, fs-1065

Material

Steel, fed, qq-s-633, amend. 2, fs-1065

NSN

5325-00-508-4675

Part Number

21-381-1

Description

Ring,retaining

CAGE

72447

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.

Part 21-381-1 NSN 5325-00-508-4675

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

07623

FIIG:

T252-G

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

0.1000lbs

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

095190

UFC:

49790

LTL:

70.0

LCL:

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 9606100000
SITC: 89983
End Use: Finished textile supplies
NAICS: 339993
USDA: 1

Freight Class: Press-fasteners, snap-fasteners & press-studs & parts therefor