Model: 12921D18

Externally Threaded Ring

Special Features:

Ring shall not contain functional mercury and/or mercury compounds

Properties:

Thread Class

Thread Direction

Right-hand

Casehardening Indicator

Not casehardened

Width

0.500 inches

Overall Length

0.810 inches

Thread Size

3.500-8

Bore Diameter

Between 2.490 inches and 2.510 inches

Depth

0.250 inches

Bore Shape

Straight

Screw Thread Series Designator

Drive Type

Slotted face

Thread Location

Both ends

Accommodation Type And Quantity

2 slots

Angle Between Accommodations In Deg

180.0

Beveled Thread

Included

Bore Annular Internal Serration

Not included

Setscrew Locking Notch

Not included

Criticality Code Justification

Feat

Material

Steel

Material

Steel

NSN

5365-01-351-6346

Part Number

12921D18

Description

Ring,externally Threaded

CAGE

88032

Part 12921D18 NSN 5365-01-351-6346

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:

136500

UFC:

68455

LTL:

RATING VARIABLE

LCL:

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

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