AN531-8R20

AN5318R20 Tapping Screw

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Datasheet. AN531-8R20 specification

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.

1.250in. ⁓1-1/4"

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

flat countersunk

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

0.320in. and 0.332in.

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

cross recess type 1

Nonmachine Thread Style
The style designation indicating the configuration that most nearly corresponds to the appearance of a nonmachine thread.

dog type (type b or c)

Countersink Angle
The included angle of the countersink.

80.0 degrees and 82.0 degrees

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

0.163in.

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

steel

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.

QQ-S-685 cond n fed spec single material response

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 or zinc

Answers.

What material is the tapping screw made of ?

Steel

What is the head style?

Flat countersunk

What is the NSN for AN531-8R20?

5305-00-283-0294

How is this classified for shipping?

Schedule B number: 7318140000
nmfc 093486
Self-tapping screws of iron or steel

What's the federal classification of AN531-8R20?

FSC 5305 ⁓ Screws

NSN 5305-00-283-0294 SCREW,TAPPING

cadmium or zinc surface treated flat countersunk head style

NIIN
002830294
NIIN Date
01/01/63
Schedule B
7318140000 
Name Code
41756
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

  • - France 
  • - Portugal 

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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

AN531-8R20 / Screw,tappingWhat is the formal definition of this item?

A hardened externally threaded fastener whose thread extends to the bearing surface of the head. the thread may be fluted or otherwise designed to cut or form its own mating thread. excludes screw, assembled washer.