Model: 51-5-4

Valve Seat

Properties:

Thread Class

2a single threaded portion

Thread Length

0.281 inches single threaded portion

Overall Height

0.500 inches

Body Inside Diameter

0.984 inches

Seat Angle In Deg

45.000

Thready Qty Per Inch (tpi)

18 single threaded portion

Thread Size

1.808 inches single threaded portion

Seating Surface Shape

Angular

Material

Nickel alloy

Style Designator

B5 plain threaded

Style Designator

Plain threaded

Thread Series Designator

Un single threaded portion

NSN

4820-00-036-1738

Part Number

51-5-4

Description

Seat,valve

CAGE

75954

A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see insert, engine valve seat.

Part 51-5-4 NSN 4820-00-036-1738

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

22113

FIIG:

A15500

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:

0.2000lbs

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:

051080

UFC:

29300

LTL:

RATING VARIABLE

LCL:

WCC:

576

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 8481909090
SITC: 74790
End Use: Industrial machines, other
NAICS: 332911
USDA: 1

Freight Class: Parts of taps, cocks, valves and similar appliances, nesoi