Model: 4B-1283-A

Engine Poppet Valve

Properties:

Head Style

Flat

Head Height

0.3650 inches

Chamfer Angle In Deg

45.0

Groove Diameter

0.5820 inches

Chamfer Length

0.0312 inches

Groove Width

0.2480 inches

Outside Diameter

3.3660 inches

Seat Angle In Deg

45.0

Stem Style

Grooved

Carbon Relief Groove

Not included

Neck Radius

0.4688 inches

Stem Length

12.1350 inches

Stem Diameter

0.6850 inches

Distance From Groove To Stem End

0.4520 inches

Material And Location

Steel

NSN

2815-00-739-5903

Part Number

4B-1283-A

Description

Valve,poppet,engine

CAGE

14541

A mushroom or tulip-shaped item having a circular head with a conical face and an extended stem used to regulate the flow of incoming fuel-air mixture or air into the combustion chamber or exhaust gases from the combustion chamber of a reciprocating internal combustion engine.

Part 4B-1283-A NSN 2815-00-739-5903

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

15884

FIIG:

A11200

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:

3.0000lbs

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:

133300

UFC:

63220

LTL:

RATING VARIABLE

LCL:

WCC:

593

TCC:

SHC:

ACC:

Trailers/Vehicles

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Schedule B and Export

Schedule B: 8409998000
SITC: 71392
End Use: Industrial engines
NAICS: 333618
USDA: 1

Freight Class: Parts for compression-ignition internal combustion piston engines (diesel), nesoi