NAS1271H4

NAS1271H4 Shear Bolt

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Datasheet. NAS1271H4 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

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

0.485in. ⁓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.

0.720in. and 0.750in. ⁓3/4"

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

double hexagon extended washer

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

0.290in. and 0.310in. ⁓5/16"

Width Between Flats

0.306in. and 0.315in.

Extended Washer Diameter

0.428in. and 0.438in.

Extended Washer Thickness

0.059in. and 0.079in.

Hole Diameter
The length of a straight line which passes through the center of a hole,and terminates at the circumference.

0.032in. and 0.042in. ⁓3/64"

Grip Diameter
The length of a straight line which passes through the center of the grip,and terminates at the circumference.

0.2485in. and 0.2495in.

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

0.250in. ⁓1/4"

Grip Length
A measurement of the longest dimension of the grip,in distinction from width.

0.240in. and 0.260in.

Hole Quantity
The number of holes provided.

4

Hole Type
Indicates the type of hole(s) provided in the item.

drilled

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

28

Hole Configuration Style
The style designation that most nearly corresponds to the appearance of the hole configuration.

double hexagon longitudinal hole

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

titanium alloy

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.

nas 621, 6AL-4V assn std single material 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.

unf

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

80205-NAS1271 professional/industrial association standard

Answers.

What class is the thread series?

Unf

What material is the shear bolt made of ?

Titanium alloy

What is the thread quantity per inch?

28

What is the grip length?

0.240 inches minimum and 0.260 inches maximum

What is the inside hole diameter?

0.032 inches minimum and 0.042 inches maximum

What is the head style?

Double hexagon extended washer

What is the thread length?

0.485 inches

What is the thread direction?

Right-hand

What is the thread class?

3a

What is the NSN for NAS1271H4?

5306-01-187-9053

How is this classified for shipping?

Schedule B number: 8109900000
Zirconium and articles thereof nesoi

What's the federal classification of NAS1271H4?

FSC 5306 ⁓ Bolts

NSN 5306-01-187-9053 BOLT,SHEAR

unf thread series 28 thread quantity per inch 0.240" grip length 0.032" hole diameter double hexagon extended washer head style 0.485" thread length right-hand 3a thread class

NIIN
011879053
NIIN Date
08/27/84
Schedule B
8109900000 
Name Code
15903
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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NAS1271H4 / Bolt,shearWhat is the formal definition of this item?

A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. the head is designed to accommodate an external wrench or driver. the head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. the unthreaded portion is of specific grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015) of an inch (0.038 mm) or less. the nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (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. a locking feature may be incorporated in the design of the head or threads. see bolt, machine and bolt, clevis.