Model: 4538-440-SS-20

Spacing Threaded Standoff

Properties:

Thread Class

3b left internal (includes through thread)

Thread Class

3b right external

Thread Direction

Right-hand left internal (includes through thread)

Thread Direction

Right-hand right external

Thread Length

0.188 inches left internal (includes through thread)0.250 inches right external

Flange Thickness

0.750 inches

Length

0.938 inches

Flange Width Across Flats

0.250 inches

Thready Qty Per Inch (tpi)

40 left internal (includes through thread)

Thready Qty Per Inch (tpi)

40 right external

Thread Size

0.112 inches right external

Thread Size

0.112 inches left internal (includes through thread)

Material

Stainless steel standoff

Material Specification

Qq-s-764, cond a federal specification single material response standoff

Surface Treatment

Passivate standoff

Surface Treatment Specification

Mil-f-14072 -e300 military specification single treatment response standoff

Style Designator

Flanged with left internal thread

Thread Series Designator

Unc left internal (includes through thread)

Thread Series Designator

Unc right external

NSN

5340-01-158-1513

Part Number

4538-440-SS-20

Description

Standoff,threaded,spacing

CAGE

55566

Part 4538-440-SS-20 NSN 5340-01-158-1513

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

40280

FIIG:

A08900

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:

1.0000lbs

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:

093486

UFC:

48950

LTL:

RATING VARIABLE

LCL:

WCC:

575

TCC:

SHC:

ACC:

Construction Materials

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