Spacing Threaded Standoff
4C28H25AP/MF
(NSN) National Stock Number
5340-01-657-3697
Federal Supply Classification
5340 Commercial Hardware
Item Name Code
40280
Schedule B Code
-
Summary
2a right external thread class, 2b left internal (includes thru thread) thread class, right-hand left internal (includes thru thread) thread direction, right-hand right external thread direction, 0.25 inches nominal left internal (includes thru thread) thread length, 0.27525 inches minimum and 0.28725 inches maximum length
| DAC | HCC | DMIL | RNCC |
|---|---|---|---|
| 5 | - | - | 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
2a right external
Details
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.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 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 external
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
0.25 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
0.27525 inches minimum and 0.28725 inches maximum
Details
A measurement of the longest dimension of any object,in distinction from width.End Item Identification
nav subsystem
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
0.244 inches minimum and 0.256 inches maximum
Details
The shortest straight line between flats,perpendicular to the height.Thread Quantity Per Inch
40 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 right external
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 external
Details
A designation that is used for the purpose of general identification of the thread.Part Name Assigned By Controlling Agency
male-female threaded hex standoff
Details
The name assigned to the item by the government agency or commercial organization controlling the design of the item.Right Projection Diameter
0.112 inches nominal
Details
None.Right Projection Length
0.1875 inches nominal
Details
None.Special Features
length tolerance -0.0006 to 0.006, tensile strength 45,000 psi hardness rockwell b50, rohs compliant, aluminum is lightweight and has a mild corrosion resistance
Details
Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification on one or more other functions.Material
aluminum overall
Details
The chemical compound or mechanical mixture properties of which the item is fabricated.Style Designator
projection one end
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 external
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.Master-Cross Reference List
| Part | CAGE | DAC | HCC | RNCC | RNVC | MSDS | RNAAC |
|---|---|---|---|---|---|---|---|
| 93505A476 | 07BY4 | 1 | - | 5 | 2 | - | ZZ |
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
| HMIC | PMIC | ESD/EMI | Criticality |
|---|---|---|---|
| P | A | A | - |
Freight
Universal / National Freight and Handling Information
| UFC | HMC | LTL | LCL |
|---|---|---|---|
| 49790 | - | W | - |
| RVC | WCC | TCC | SHC |
|---|---|---|---|
| - | 713 | Z | 9 |
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Manufacturer
FAQs
Frequently asked questions for NSN 5340-01-657-3697
What is the NIIN of the NSN 5340-01-657-3697?
The National Item Identification Number (NIIN) of the NSN 5340-01-657-3697 is 01-657-3697
When the NSN 5340-01-657-3697 was assigned to the Federal Catalog?
It was assigned 8 years ago, on Wed, Aug 10, 2016
Does the NSN 5340-01-657-3697 contain any precious metals?
Does not contain precious metal
Does the NSN 5340-01-657-3697 contain any hazardous material?
No information in HMIRS
What is the ESD classification of NSN 5340-01-657-3697?
No known electrostatic discharge
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