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FSC 4730 | Railing Fittings Lubrication Tube Pipe Hose
MS21915-20-12

Model: MS21915-20-12

Boss Reducer

Properties:

Thread Class

3a 2nd end

Thread Class

3b 1st end

Reducer Type

Concentric

Maximum Operating Temp

275.0 degrees fahrenheit single response

Connection Style

External seat for gasket seal (boss) 2nd end

Connection Style

Gasket seal (boss) 1st end

Connection Type

Threaded external boss 2nd end

Connection Type

Threaded internal boss 1st end

Thready Qty Per Inch (tpi)

12 all ends

Maximum Operating Pressure

1500.0 pounds per square inch single response

Thread Size

1.625 inches 1st end

Thread Size

1.062 inches 2nd end

Nominallength

2.156 inches

Material

Steel comp 302 or steel comp 303 or steel comp 304 or steel comp 316 or steel comp 321

Material Specification

66 federal standard single material response

Media For Which Designed

Aeronautical fluid single response

Surface Treatment

Passivate

Surface Treatment Specification

Mil-s-5002 military specification single treatment response

Thread Series Designator

Unj all ends

Specification Data

96906-ms21915 government standard and 81349-mil-f-18280 government specification

NSN

4730-00-978-6975

Part Number

MS21915-20-12

Description

Reducer,boss

CAGE

96906

A straight fitting having a boss connection of a different size at each end. Both connections have external or internal machine threads (straight threads other than pipe or hose series) and are designed to facilitate a gasket, preformed packing, washer, or the like to form a seal at the boss. Excludes bushing (as modified).

Part MS21915-20-12 NSN 4730-00-978-6975

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

23541

FIIG:

A080B0

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:

0.7000lbs

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:

052190

UFC:

30000

LTL:

RATING VARIABLE

LCL:

WCC:

576

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 7307994000
SITC: 67959
End Use: Iron and steel products, other
NAICS: 332919
USDA: 1

Freight Class: Other fittings nesoi of alloy steel not stainless