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

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

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:

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:

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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