Model: 42R2051-20

Retaining Ring

Properties:

Cross Sectional Shape
Rectangular
Inside Diameter
Between 0.304 inches and 0.311 inches
Casehardening Indicator
Not casehardened
Major Thickness
Between 0.023 inches and 0.027 inches
Ring Style
External
Usage Design
External
Material Hardness Rating
Between 69.5 rockwell superficial 30-n and 73.0 rockwell superficial 30-n
Material
Steel, fed, fed standard 66, fs1066 to 1090
Material
Steel, fed, fed standard 66, fs1066 to 1090
Surface Treatment
Zinc
Surface Treatment
Zinc plated
NSN
5325-00-282-6977
Part Number
42R2051-20
Description
Ring,retaining
CAGE
10001

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 42R2051-20 NSN 5325-00-282-6977

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
07623
FIIG:
T252-G
Concept No.:
App. Key:
GA
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
063520
UFC:
49770
LTL:
RATING VARIABLE
LCL:
70.0
WCC:
723
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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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

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