Model: 7F9578

Extension Helical Spring

Properties:

Inside Diameter

Between 0.415 inches and 0.443 inches

Opening Width

0.590 inches both ends

End Style

Machine loop both ends

Spring Free Length

3.832 inches

Coil Quantity

17-1/2

Design Type

Closed

Load Rating

40.00 pounds

Coil Helix Direction

Right-hand or left-hand

Spring Deflection Rate

66.400 pounds per inch

Spring Free Outside Diameter

Between 0.630 inches and 0.650 inches

Hook Radius

0.190 inches both ends

Spring Length Under Load

3.947 inches

Coil To Hook Inside Length

0.810 inches both ends

Material

Steel

Material Specification

Qq-w-428, type 1 or 2 /d/ federal specification single material response

Surface Treatment

Enamel

Surface Treatment Specification

Tt-e-489 federal specification single treatment response

Style Designator

Cylindrical

NSN

5360-00-321-6470

Part Number

7F9578

Description

Spring,helical,extension

CAGE

11083

An open-or close-coiled spring, wound in various forms and from different shapes and types of materials and finished at the ends, so designed to provide resistance to pulling forces. The close-coiled springs may incorporate the special feature of initial tension created between the coils when wound so that an initial load must be applied to separate them. Excludes spring, reinforcing, hose.

Part 7F9578 NSN 5360-00-321-6470

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

04227

FIIG:

A02900

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:

177980

UFC:

87430

LTL:

55.0

LCL:

WCC:

579

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 8710000090
SITC: 89111
End Use: Military trucks, armored vehicles, etc.
NAICS: 336992
USDA: 1

Freight Class: Parts of armored fighting vehicles,motorized, whether or not fitted with weapons