Assembled Washer Screw
90402A144
(NSN) National Stock Number
5305-01-568-3439
Federal Supply Classification
5305 Screws
Item Name Code
06660
Schedule B Code
7318152000
Summary
2a thread class, right-hand thread direction, 0.250 inches nominal thread length, 0.250 inches nominal fastener length, pan head style, 0.270 inches nominal head diameter
| DAC | HCC | DMIL | RNCC |
|---|---|---|---|
| 1 | - | - | 3 |
| RNVC | SADC | MSDS | RNAAC |
|---|---|---|---|
| 2 | - | - | ZZ |
Identification
A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
| INC | FIIG | Concept | Condition |
|---|---|---|---|
| 06660 | A003B0 | - | 1 |
Specifications
Thread Class
2a
Details
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.Thread Direction
right-hand
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
0.250 inches nominal
Details
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.Fastener Length
0.250 inches nominal
Details
The dimension,measured along a line parallel to the longitudinal axis,from the largest bearing surface of the fastener head to the extreme opposite end,or as specifically designated for other type fasteners.Head Style
pan
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.Head Diameter
0.270 inches nominal
Details
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.Head Height
0.097 inches nominal
Details
A measurement from the bottom to the top of the head,in distinction from depth.Washer Quantity
1
Details
The number of washers included on the item.Internal Drive Style
cross recess type ii
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the internal drive.Nominal Thread Diameter
0.138 inches
Details
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.Thread Quantity Per Inch
32
Details
The number of threads on the item per linear inch measured on a line parallel to the thread axis.Hardness Rating
60.0 rockwell b minimum overall
Details
A numeric value that reflects the hardness of an item when used in conjunction with a hardness rating scale.Primary Washer Outside Diameter
0.285 inches nominal
Details
None.Primary Washer Style
flat external teeth
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the primary washer.Primary Washer Material Thickness
0.020 inches nominal
Details
None.Material
steel overall
Details
The chemical compound or mechanical mixture properties of which the item is fabricated.Surface Treatment
zinc fastener
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 Series Designator
unc
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 |
|---|---|---|---|
| N | A | A | - |
Freight
Universal / National Freight and Handling Information
| UFC | HMC | LTL | LCL |
|---|---|---|---|
| 48950 | - | W | - |
| RVC | WCC | TCC | SHC |
|---|---|---|---|
| - | 713 | Z | 9 |
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Manufacturer
FAQs
Frequently asked questions for NSN 5305-01-568-3439
What is the NIIN of the NSN 5305-01-568-3439?
The National Item Identification Number (NIIN) of the NSN 5305-01-568-3439 is 01-568-3439
When the NSN 5305-01-568-3439 was assigned to the Federal Catalog?
It was assigned 16 years ago, on Tue, Oct 28, 2008
Does the NSN 5305-01-568-3439 contain any precious metals?
Does not contain precious metal
Does the NSN 5305-01-568-3439 contain any hazardous material?
No data in HMIRS
What is the ESD classification of NSN 5305-01-568-3439?
No known electrostatic discharge
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