Spacing Threaded Standoff
ST4M138-04-40
(NSN) National Stock Number
5340-01-624-6343
Federal Supply Classification
5340 Commercial Hardware
Item Name Code
40280
Schedule B Code
-
Summary
2b left internal (includes thru thread) thread class, 2b right internal thread class, right-hand left internal (includes thru thread) thread direction, right-hand right internal thread direction, 0.500 inches nominal right internal thread length, 0.500 inches nominal left internal (includes thru thread) thread length
| DAC | HCC | DMIL | RNCC |
|---|---|---|---|
| A | - | - | 3 |
| RNVC | SADC | MSDS | RNAAC |
|---|---|---|---|
| 2 | - | - | ZZ |
Identification
A standoff that must have a threaded end(s) or be internally threaded its full length. For items having external threads on both ends, see stud (as modified). For items with an outside contour that is the same for the entire length, are flat on top and bottom, having internal threads its full length, and the length does not exceed twice the width across the flats or outside diameter, see nut (as modified); use maximum dimensions(s) for compliance.
| INC | FIIG | Concept | Condition |
|---|---|---|---|
| 40280 | A08900 | 1 | 1 |
Specifications
Thread Class
2b left internal (includes thru thread)
Details
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.Thread Class
2b right internal
Details
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.Thread Direction
right-hand left internal (includes thru thread)
Details
The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.Thread Direction
right-hand right internal
Details
The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.Thread Length
0.500 inches nominal right internal
Details
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.Thread Length
0.500 inches nominal left internal (includes thru thread)
Details
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.Length
4.00 inches nominal
Details
A measurement of the longest dimension of any object,in distinction from width.End Item Identification
f-15sa
Details
The national stock number or the identification information of the end equipment for which the item is a part.Cross-Sectional Shape
hexagon
Details
The geometric configuration of the item when viewed in cross section.Width Across Flats
0.250 inches nominal
Details
The shortest straight line between flats,perpendicular to the height.Thread Quantity Per Inch
40.0 left internal (includes thru thread)
Details
The number of threads on the item per linear inch measured on a line parallel to the thread axis.Thread Quantity Per Inch
40.0 right internal
Details
The number of threads on the item per linear inch measured on a line parallel to the thread axis.Nominal Thread Size
0.112 inches left internal (includes thru thread)
Details
A designation that is used for the purpose of general identification of the thread.Nominal Thread Size
0.112 inches right internal
Details
A designation that is used for the purpose of general identification of the thread.Part Name Assigned By Controlling Agency
spacer, sleeve-hex, threaded, self-locking
Details
The name assigned to the item by the government agency or commercial organization controlling the design of the item.Material
aluminum alloy 2024 standoff
Details
The chemical compound or mechanical mixture properties of which the item is fabricated.Material
steel corrosion resisting insert
Details
The chemical compound or mechanical mixture properties of which the item is fabricated.Style Designator
left internal and right internal threads
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.Thread Series Designator
unc left internal (includes thru thread)
Details
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.Thread Series Designator
unc right internal
Details
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
| HMIC | PMIC | ESD/EMI | Criticality |
|---|---|---|---|
| P | U | A | - |
Freight
Universal / National Freight and Handling Information
| UFC | HMC | LTL | LCL |
|---|---|---|---|
| 49790 | - | W | - |
| RVC | WCC | TCC | SHC |
|---|---|---|---|
| - | 713 | Z | 9 |
Certified Supplier
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Manufacturer
THE BOEING COMPANY DIV DEFENSE
CAGE: 76301
SAINT LOUIS
, MO
, 63134-1939
UNITED STATES
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FAQs
Frequently asked questions for NSN 5340-01-624-6343
What is the NIIN of the NSN 5340-01-624-6343?
The National Item Identification Number (NIIN) of the NSN 5340-01-624-6343 is 01-624-6343
When the NSN 5340-01-624-6343 was assigned to the Federal Catalog?
It was assigned 10 years ago, on Thu, Jan 9, 2014
Does the NSN 5340-01-624-6343 contain any precious metals?
Type/content is unknown
Does the NSN 5340-01-624-6343 contain any hazardous material?
No information in HMIRS
What is the ESD classification of NSN 5340-01-624-6343?
No known electrostatic discharge
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