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.:
1
App. Key:
B
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
P
PMIC:
A
ESD:
ESD:
MMAC:
SX
CRITL:
X

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:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
575
TCC:
Z
SHC:
9
ACC:
Construction Materials

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