Model: ST4M159-3

Spring Tension Washer

Special Features:

Recess angle 105 degrees min, 115 degrees max

Properties:

Hole Diameter

Between 0.180 inches and 0.184 inches

Outside Diameter

Between 0.320 inches and 0.350 inches

Material Thickness

0.021 inches

Surface Finish

63.0 microinches all surfaces

Material

Steel comp 302 or steel comp 304

Material Specification

Qq-s-766, cond a federal specification all material responses

Surface Treatment

Passivate

Surface Treatment Specification

Qq-p-35 federal specification single treatment response

Style Designator

Spring tension

NSN

5310-00-352-0478

Part Number

ST4M159-3

Description

Washer,spring Tension

CAGE

76301

A bent spring metal washer with a centrally located hole. It is designed to exert pressure axially when assembled in place.

Part ST4M159-3 NSN 5310-00-352-0478

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

15938

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:

194120

UFC:

95100

LTL:

RATING VARIABLE

LCL:

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

End Items End applications NSN 5310-00-352-0478 is a component of

Eagle F-15 Aircraft
F-16 Aircraft
Hornet F/a-18 Aircraft
Harrier Av-8b Aircraft
F-22 Raptor Air Dominance Fighter
011556909
Aircraft Pylon
011556908
Aircraft Pylon
011712090
Aircraft Wing Assembly
012511738
Outer Wing Parts Kit
011031977
Outer Wing Parts Kit
011712089
Aircraft Wing Assembly
011316156
Aircraft Fuel Tank
010170858
Aircraft Fuel Tank
010577835
Branched Wiring Harness
004941135
Tube Coupling Assembly

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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