Model: A257-1898

Sleeve Bearing

Properties:

Overall Length

Between 0.9950 inches and 1.0050 inches

Body Outside Diameter

Between 0.7520 inches and 0.7530 inches

Body Inside Diameter

Between 0.6260 inches and 0.6270 inches

Lubrication Material

Lubricating oil, mil-l-15016, symbol 2190

Corner Shape

Square all corners

Hardness Rating

30.0 rockwell h and 70.0 rockwell h

Material

Copper alloy or iron comp b or iron comp a1 or iron comp a2 or iron comp a3

Material Specification

Mil-b-5687, type 1, comp a or b military specification all material responses

Style Designator

17c solid, plain, no outside flanges

Style Designator

Solid, plain, no outside flanges

NSN

3120-00-287-6766

Part Number

A257-1898

Description

Bearing,sleeve

CAGE

81782

A tubular shaped item with or without flange(s) designed to reduce friction and carry a kinetic load on the surface(s) parallel to the axis of the bore. it must have a visible or detectable means of lubrication or be self-lubricated. the over all length must exceed 25 percent of the outside diameter or the shortest distance between peripheral flats of the body, except for straight tubular (without flange or shoulder) items having a bearing surface(s) parallel to the axis of the bore only. includes items which are divided into two or more segments which include 180 degrees (3.141 radians) or less of the bearing periphery. see also bushing, sleeve; spacer, sleeve; and washer (as modified). excludes pin, hollow.

Part A257-1898 NSN 3120-00-287-6766

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

13205

FIIG:

A045A0

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:

0.1000lbs

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:

114870

UFC:

58890

LTL:

77.5

LCL:

WCC:

742

TCC:

SHC:

ACC:

Trailers/Vehicles

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Schedule B and Export

Schedule B: 8482997090
SITC: 74699
End Use: Industrial machines, other
NAICS: 332991
USDA: 1

Freight Class: Parts, nesoi, for roller bearings or for combined ball/roller bearings, nesoi