Model: 66-4908

Valve Seat

Properties:

Flange Diameter

Between 1.175 inches and 1.180 inches

Body Outside Diameter

0.750 inches

Body Inside Diameter

0.630 inches

Flange Seat To Disk End Height

Between 0.440 inches and 0.445 inches

Under Flange Height

Between 0.495 inches and 0.500 inches

Seal Accommodation Type

Grooved

Hardness Rating

27.0 rockwell c and 33.0 rockwell c

Seating Surface Shape

Flat

Material

Steel comp 4130

Material Specification

Mil-s-6758 military specification single material response

Style Designator

Plain flanged

NSN

4820-00-739-1777

Part Number

66-4908

Description

Seat,valve

CAGE

81205

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 66-4908 NSN 4820-00-739-1777

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:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

133300

UFC:

63220

LTL:

RATING VARIABLE

LCL:

WCC:

593

TCC:

SHC:

ACC:

Equipment for Aircraft

Pricing & Availability Check

Submit this form for stock availability and pricing.

How to Order

Ordering from buyaircraftparts.com

If you would like to order this valve seat (NSN 4820-00-739-1777) please submit the pricing and availability form above to receive an up to date quote by email. If you agree to the pricing and terms you can e-sign your order online!

We are pleased to have the opportunity to serve you.

Have a Question

Hours:	08:00-18:00 Eastern Standard Time
Phone:	+1 470-231-0824
Email:	Contact Form »

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