Model: 28021

Externally Threaded Ring

Special Features:

Counterbored, 3.000 in. Dia, 0.312 in. Dp, od has a core, 0.312 in. Dia, 0.250 in. Dp

Properties:

Thread Class
2a
Thread Direction
Right-hand
Casehardening Indicator
Not casehardened
Overall Length
0.750 inches
Diameter
0.250 inches
Thread Size
4.250-12
Bore Diameter
2.531 inches
Depth
0.380 inches
Bore Shape
Straight
Screw Thread Series Designator
Un
Drive Type
Drilled face
Thread Location
Drive end
Accommodation Type And Quantity
2 holes
Angle Between Accommodations In Deg
180.0
Radius From Geometric Axis To Accommodation
1.875 inches
Beveled Thread
Included
Bore Annular Internal Serration
Not included
Setscrew Locking Notch
Not included
Bore Edge Process
Any acceptable
Material
Steel, comp c1117
Material
Steel, comp c1117
NSN
5365-01-179-9959
Part Number
28021
Description
Ring,externally Threaded
CAGE
62982

Part 28021 NSN 5365-01-179-9959

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
08417
FIIG:
T252-D
Concept No.:
App. Key:
DA
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:
A
ESD:
ESD:
MMAC:
SX
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
095190
UFC:
49790
LTL:
70.0
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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