Model: ANSI B18.21.1

Lock Washer

Properties:

Hole Diameter

Between 0.636 inches and 0.660 inches

Outside Diameter

1.079 inches

Material Thickness

0.156 inches

End Application

Aircraft, awacs, e-3a; bob hope class t-akr 300; missile, air-to-air, phoenix (aim-54); assault amphibious vehicle, command (aavc-7a1); epp iii (electric power plant iii) for patriot missile system; tarawa class lha; rg-33 auv mrap

Material

Steel comp 420

Material Specification

66 federal standard single material response

Surface Treatment

Passivate

Style Designator

Split helical-right hand

Nondefinitive Specification/std Data

B class and 2 style

NSN

5310-00-926-5882

Part Number

ANSI B18.21.1

Description

Washer,lock

CAGE

80204

A washer which is usually round with a centrally located hole. Its edges and two bearing surfaces are so designed that applied pressure brings into play the spring tension and/or frictional locking principle which materially resists any tendency toward turning. It may be made of one or two pieces

Part ANSI B18.21.1 NSN 5310-00-926-5882

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

14218

FIIG:

A022B0

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:

194160

UFC:

55210

LTL:

50.0

LCL:

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 7318210000
SITC: 69422
End Use: Finished metal shapes
NAICS: 332722
USDA: 1

Freight Class: Spring washers and other lock washers, iron or steel