Vent Plug

2446497

2446497
(NSN) National Stock Number
5340-00-991-4344
Federal Supply Classification
5340 Commercial Hardware
Item Name Code
28458
Schedule B Code
8421990080
Summary

3a thread class, 0.436 inches minimum and 0.438 inches maximum inside diameter, 0.531 inches nominal thread length, 0.875 inches nominal outside diameter, 0.750 inches nominal length, 0.281 inches nominal vent hole diameter

DAC HCC DMIL RNCC
1 - - 3
RNVC SADC MSDS RNAAC
2 - - KE
Identification

A ported item with or without external threads. The port(s) may contain a filtering disk or wire fabric. It is designed to be inserted into an opening in a cylinder, pump, regulator, valve, housing, casing, or the like, to permit the free flow of fluid from or to the atmosphere. Excludes:breather.

INC FIIG Concept Condition
28458 A539T0 - 1
Specifications
Thread Class
3a
Details A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
Inside Diameter
0.436 inches minimum and 0.438 inches maximum
Details The length of a straight line which passes through the center of a circular figure or body,and terminates at the inside circumference.
Thread Length
0.531 inches nominal
Details A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.
Outside Diameter
0.875 inches nominal
Details The length of a straight line which passes through the center of a circular figure or body,and terminates at the outside circumference.
Length
0.750 inches nominal
Details A measurement of the longest dimension of any object,in distinction from width.
Vent Hole Diameter
0.281 inches nominal
Details The length of a straight line which passes through the center of the vent hole, and terminates at the circumference.
End Connection Type
threaded
Details Indicates the type of end connection.
Vent Hole Quantity
1
Details The number of vent holes provided on the item.
Vent Hole Shape
round
Details The physical configuration of the vent hole.
Material
aluminum alloy
Details The chemical compound or mechanical mixture properties of which the item is fabricated.
Surface Treatment
anodize
Details The metallic,nonmetallic,and/or chemical properties with which the item is plated,dipped,and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.
Thread Size And Series/Type Designator
7/8-14 unf
Details Designates the thread diameter,series/type,and number of threads per specific measurement scale.
Fsc Application Data
valve assy hydraulic system aircraft
Details The justification for the assignment of a federal supply class /fsc/ to an item based on the classification of the next higher classifiable assembly.
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
HMIC PMIC ESD/EMI Criticality
P 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
THE BOEING COMPANY
CAGE: 88277
LONG BEACH , CA , 90808-1700
UNITED STATES
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FAQs
Frequently asked questions for NSN 5340-00-991-4344
What is the NIIN of the NSN 5340-00-991-4344?
The National Item Identification Number (NIIN) of the NSN 5340-00-991-4344 is 00-991-4344
When the NSN 5340-00-991-4344 was assigned to the Federal Catalog?
It was assigned 57 years ago, on Tue, Mar 28, 1967
Does the NSN 5340-00-991-4344 contain any precious metals?
Does not contain precious metal
Does the NSN 5340-00-991-4344 contain any hazardous material?
No information in HMIRS

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