Model: 12M639-7

Extension Helical Spring

Properties:

Opening Width

0.060 inches both ends

End Style

Machined half loop both ends

Spring Free Length

2.540 inches

Coil Quantity

Design Type

Mainspring

Load Rating

Between 15.120 pounds and 26.620 pounds

Coil Helix Direction

Right-hand or left-hand

Spring Deflection Rate

8.330 pounds per inch

Spring Free Outside Diameter

0.570 inches

Hook Radius

0.125 inches both ends

End Angular Relationship

Ends parallel one to other

Spring Length Under Load

Between 4.700 inches and 5.600 inches

Material

Steel

Style Designator

Cylindrical

NSN

5360-00-931-1658

Part Number

12M639-7

Description

Spring,helical,extension

CAGE

81755

Part 12M639-7 NSN 5360-00-931-1658

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:

177970

UFC:

87420

LTL:

NO RATING

LCL:

WCC:

579

TCC:

SHC:

ACC:

Construction Materials

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