NAS4405-18

NAS440518 Close Tolerance Screw

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Datasheet. NAS4405-18 specification

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.

0.438in. ⁓29/64"

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.

1.583in. ⁓1-19/32"

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.

0.575in. and 0.625in.

Single Shear Strength
The minimum load,applied perpendicularly to the longitudinal axis of an item,at which point the item will fracture when subjected to the standard single shear test method.

95000 pounds per square inch

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

TRI-Wing recess

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

0.312in. ⁓5/16"

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

24

Minimum Yield Strength
The stress at which a material exhibits a specified limiting deviation from the proportionality of stress or strain.

160000 pounds per square inch

Countersink Angle
The included angle of the countersink.

99.0 degrees and 101.0 degrees

Part Name Assigned By Controlling Agency
The name assigned to the item by the government agency or commercial organization controlling the design of the item.

bolt, 100 deg. head, TRI-Slot recess, close tolerance, alloy steel, short thread, SELF-Locking and nonlocking

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

steel comp 4340 or steel comp 8740

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

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, TY2, CL2 fed spec 1st 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

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

80205-NAS4400 thru 4416 professional/industrial association standard

Answers.

What class is the thread series?

Unc

What material is the close tolerance screw made of ?

Steel comp 4340 or steel comp 8740

What is the thread quantity per inch?

24

What is the head style?

Flat countersunk

What is the thread length?

0.438 inches

What is the thread direction?

Right-hand

What is the NSN for NAS4405-18?

5305-01-597-4109

How is this classified for shipping?

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

What's the federal classification of NAS4405-18?

FSC 5305 ⁓ Screws

NSN 5305-01-597-4109 SCREW,CLOSE TOLERANCE

unc thread series cadmium surface treated bolt, 100 deg. head, tri-slot recess, close tolerance, alloy steel, short thread, self-locking 24 thread quantity per inch flat countersunk head style 0.438" thread length right-hand

NIIN
015974109
NIIN Date
06/09/11
Schedule B
7318152000 
Name Code
29294
FIIG
A003B0
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
No precious metals
Enviromental
N/A
Electrostatic ESD & EMI
No ESD or EMI sensitivity

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NAS4405-18 / Screw,close toleranceWhat is the formal definition of this item?

A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. the nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. the head is designed to be held or driven with an inserted driver. it is not designed for rotation by the thumb and fingers. a locking feature may be incorporated in the design of the head or threads.