Model: P28278B

Valve Stem Guide

Properties:

Counterbore Diameter

Between 0.510 inches and 0.520 inches

Counterbore Depth

0.469 inches

Overall Length

4.250 inches

Outside Diameter

Between 1.225 inches and 1.230 inches

Bore Diameter

0.5000 inches

Metallic Hardness Rating

27.0 rockwell c and 37.0 rockwell c

Counterbore Location

Aa end

Bore Countersink

Not included

Bore Counterbore

Included

Aa End Diameter

Between 0.870 inches and 0.873 inches

Bb End Shank Diameter

Between 0.808 inches and 0.814 inches

Bb End Chamfer Length

0.125 inches

Bb End Chamfer Angle In Deg

45.0

Aa End Chamfer Length

0.031 inches

Aa End Chamfer Angle In Deg

45.0

Material

Iron, cast

Material

Iron cast

NSN

2815-00-798-3532

Part Number

P28278B

Description

Guide,valve Stem

CAGE

95201

A replaceable cylindrical item designed to provide wear surface and maintain alignment of a reciprocating valve stem and the like, it may have a flange(s) and/or grooves.

Part P28278B NSN 2815-00-798-3532

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

32562

FIIG:

T267-E

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:

0.5000lbs

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:

594

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