NAS1994-5H

NAS19945H Close Tolerance Screw

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Datasheet. NAS1994-5H specification

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

3a

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

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

flat countersunk

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

offset cruciform (torque set)

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

28

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.

unjf

Answers.

What class is the thread series?

Unjf

What is the thread quantity per inch?

28

What is the head style?

Flat countersunk

What is the thread direction?

Right-hand

What is the thread class?

3a

What is the NSN for NAS1994-5H?

5305-01-356-7530

What's the federal classification of NAS1994-5H?

FSC 5305 ⁓ Screws

NSN 5305-01-356-7530 SCREW,CLOSE TOLERANCE

unjf thread series 28 thread quantity per inch flat countersunk head style right-hand 3a thread class

NIIN
013567530
NIIN Date
04/10/92
Schedule B
 
Name Code
29294
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

  • - Canada 

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NAS1994-5H / 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.