720201-1

7202011 Assembled Washer Screw
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Datasheet. 720201-1 specification

Thread Class
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.

2a

Thread Direction
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.

RIGHT-Hand

Thread Length
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.

0.559in. and 0.587in. ⁓19/32"

Fastener Length
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.

0.615in. and 0.635in. ⁓41/64"

Head Style
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.

pan

Head Diameter
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.

0.205in. and 0.219in.

Head Height
A measurement from the bottom to the top of the head,in distinction from depth.

0.070in. and 0.080in. ⁓3/32"

Washer Quantity
The number of washers included on the item.

2

Internal Drive Style
The style designation indicating the configuration that most nearly corresponds to the appearance of the internal drive.

cross recess type 1

Nominal Thread Diameter
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.

0.112in. (UTS #4)

Thread Quantity Per Inch
The number of threads on the item per linear inch measured on a line parallel to the thread axis.

40

Secondary Washer Relationship To Primary Washer
An indication of whether or not the secondary is identical to the primary washer.

not identical

Secondary Washer Style
The style designation indicating the configuration that most nearly corresponds to the appearance of the secondary washer.

flat

Primary Washer Outside Diameter

0.209in.

Secondary Washer Outside Diameter

0.250in.

Primary Washer Style
The style designation indicating the configuration that most nearly corresponds to the appearance of the primary washer.

split helical ring

Primary Washer Material Thickness

0.025in. and 0.031in.

Secondary Washer Material Thickness

0.017in. and 0.031in.

Special Features
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.

lock washer rockwell c scale 45 to 53

Material
The chemical compound or mechanical mixture properties of which the item is fabricated.

steel comp 1010 fastener

Material
The chemical compound or mechanical mixture properties of which the item is fabricated.

steel comp 1060 primary washer or steel comp 1080 primary washer

Material
The chemical compound or mechanical mixture properties of which the item is fabricated.

steel comp 1020 secondary washer or steel comp 1025 secondary washer or steel secondary washer

Material Document And Classification
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.

MIL-S-7952 mil spec 1st material response secondary washer or MIL-S-7952 mil spec 2nd material response secondary washer or QQ-S-698 fed spec 3rd material response secondary washer

Material Document And Classification
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.

astm A108 assn std single material response fastener or astm A575 assn std single material response fastener

Material Document And Classification
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.

ASTMA576 assn std all material responses primary washer

Surface Treatment
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.

cadmium and chromate

Surface Treatment Document And Classification
The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material.

QQ-P-416, type 2, class 3 fed spec single treatment response

Thread Series Designator
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.

unc

Answers.

What class is the thread series?

Unc

What material is the assembled washer screw made of ?

Steel comp 1020 secondary washer or steel comp 1025 secondary washer or steel secondary washer

What material is the assembled washer screw made of ?

Steel comp 1060 primary washer or steel comp 1080 primary washer

What material is the assembled washer screw made of ?

Steel comp 1010 fastener

What is the thread quantity per inch?

40

What is the head style?

Pan

What is the thread length?

0.559 inches minimum and 0.587 inches maximum

What is the thread direction?

Right-hand

What is the thread class?

2a

What is the NSN for 720201-1?

5305-00-489-8826

How is this classified for shipping?

Schedule B number: 7318152000
nmfc 093486
Bolts and bolts and their nuts or washers exported in the same shipment

What's the federal classification of 720201-1?

FSC 5305 ⁓ Screws

NSN 5305-00-489-8826 SCREW,ASSEMBLED WASHER

unc thread series cadmium surface treated lock washer rockwell c scale 45 to 53 40 thread quantity per inch pan head style 0.559" thread length right-hand 2a thread class

NIIN
004898826
NIIN Date
10/01/69
Schedule B
7318152000 
Name Code
06660
FIIG
A003B0
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
--
Enviromental
N/A
Electrostatic ESD & EMI
No ESD or EMI sensitivity

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Shipping Information

Special Handling
Other or no special handling required (sh) 
LTL (less than a truck load rating)
Rating variable 
LCL (less than a car load rating)
50.0
Special Cargo
No special type of cargo code applicable 
Air Freight (Minimum cargo door size required)
Shipment is not a consolidation and does not exceed 84 inches in any dimension. 
Customs Requirement Classification
Construction materials: includes paint and related materials, prefabricated building, wood products, metal and composition mater 
Commodity (for shipments via water)
Metal hardware 
NMFC (national motor freight code)
093486 BOLTS,NUTS OR SCREWS, NOI (SUB 3) 
UFC (universal freight code)
48950 

Similar by Design Other screws with similar characteristics

Nothing similar to this part number was found in our inventory

720201-1 / Screw,assembled washerWhat is the formal definition of this item?

A screw, (as modified) to which has been assembled one or more nonremovable washer(s).