EWBM26-7-52

EWBM26752 Close Tolerance Bolt

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Datasheet. EWBM26-7-52 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.

0.814in. ⁓53/64"

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.

4.064in. ⁓4-5/64"

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

double hexagon w/hole

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

0.464in. ⁓15/32"

Width Between Flats

0.553in. and 0.564in.

Extended Washer Diameter

0.820in. and 0.830in.

Extended Washer Thickness

0.083in.

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

0.4360in. and 0.4370in.

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

0.438in. ⁓29/64"

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

3.250in.

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

20

Minimum Tensile Strength
The maximum rated load in tension applied in a longitudinal direction,per unit of cross-sectional area,that the material can withstand without rupture.

260000 pounds per square inch

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

cobalt comp MP-35-N

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.

SPS-M-573 fscm 56878 mil 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.

56878-EWB-26 manufacturers standard

Purchase Description Identification
The controlling activity and identification of a document used in lieu of a specification in the procurement of an item of supply.

56878-SPS-B-71320

Answers.

What class is the thread series?

Unf

What material is the close tolerance bolt made of ?

Cobalt comp mp-35-n

What is the thread quantity per inch?

20

What is the grip length?

3.250 inches

What is the head style?

Double hexagon w/hole

What is the thread length?

0.814 inches

What is the thread direction?

Right-hand

What is the thread class?

3a

What is the NSN for EWBM26-7-52?

5306-01-102-0304

How is this classified for shipping?

Schedule B number: 8105900000
Cobalt, wrought, and articles thereof

What's the federal classification of EWBM26-7-52?

FSC 5306 ⁓ Bolts

NSN 5306-01-102-0304 BOLT,CLOSE TOLERANCE

unf thread series 20 thread quantity per inch 3.250" grip length double hexagon w/hole head style 0.814" thread length right-hand 3a thread class

NIIN
011020304
NIIN Date
10/11/80
Schedule B
8105900000 
Name Code
27851
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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EWBM26-7-52 / Bolt,close toleranceWhat is the formal definition of this item?

An externally threaded fastener whose unthreaded portion is of a specified 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. 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. a locking feature may be incorporated in the design of the head or threads. for items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. for items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.