NAS720B8-8

NAS720B88 Assembled Washer Screw

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Datasheet. NAS720B8-8 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.

0.500in. ⁓1/2"

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.

0.500in. ⁓1/2"

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

pan no. 2

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

0.314in.

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

0.090in. ⁓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.

slot

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

0.164in. (UTS #8)

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

32

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

0.293in.

Secondary Washer Outside Diameter

0.293in.

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

0.040in.

Secondary Washer Material Thickness

0.016in.

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

copper alloy 342 fastener

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

copper alloy 510 primary washer

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

copper secondary 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.

tin fastener

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.

tin secondary 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.

tin primary washer

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

Specification/standard Data
The document designator of the specification or standard which established the item of supply.

80205-NAS720 professional/industrial association standard

Answers.

What class is the thread series?

Unc

What material is the assembled washer screw made of ?

Copper secondary washer

What material is the assembled washer screw made of ?

Copper alloy 510 primary washer

What material is the assembled washer screw made of ?

Copper alloy 342 fastener

What is the thread quantity per inch?

32

What is the head style?

Pan no. 2

What is the thread length?

0.500 inches

What is the thread direction?

Right-hand

What is the thread class?

2a

What is the NSN for NAS720B8-8?

5305-01-137-7758

How is this classified for shipping?

Schedule B number: 7415338550
Other copper screws (not for wood) bolts and nuts

What's the federal classification of NAS720B8-8?

FSC 5305 ⁓ Screws

NSN 5305-01-137-7758 SCREW,ASSEMBLED WASHER

unc thread series tin primary washer surface treated 32 thread quantity per inch pan no. 2 head style 0.500" thread length right-hand 2a thread class

NIIN
011377758
NIIN Date
09/02/82
Schedule B
7415338550 
Name Code
06660
FIIG
A003B0
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
Metal content unknown
Enviromental
N/A
Electrostatic ESD & EMI
No ESD or EMI sensitivity

Major End Users Countries and entities

  • - Germany 

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Similar by Design Other screws with similar characteristics

Nothing similar to this part number was found in our inventory

NAS720B8-8 / 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).