Part Information
1/2-20 unf-2b threaded hole 7/8 in. Deep in end with shortest length of step

NSN

National Stock Number:

3040-00-914-5177 3040009145177

TXT

Description:

Worm Shaft

INC

Item Name Code:

18249

MRC:

A term used to identify the ends as identical or not identical.AAHN

End Similarity:

Not identical

MRC:

The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.ABHP

Overall Length:

17.594 inches

MRC:

A numeric value that reflects the hardness of the teeth when used in conjunction with a hardness rating scale.BYFR

Teeth Hardness Rating:

Between 30.0 rockwell c and 35.0 rockwell c

MRC:

The number of threads on the worm.CFFB

Worm Thread Quantity:

1

MRC:

The distance a worm thread advances axially in one complete turn.CFFC

Worm Thread Lead:

0.875 inches

MRC:

The direction of the worm thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.CFFD

Worm Thread Direction:

Right-hand

MRC:

The pressure angle of the worm,expressed in degrees.CFFF

Worm Pressure Angle In Deg:

27.000

MRC:

The angular amount the worm is inclined.CFFG

Worm Helix Angle:

4 degrees 57 min

MRC:

The length of a straight line which passes through the center of the worm,and terminates at the outside circumference.CFFK

Worm Outside Diameter:

3.776 inches

MRC:

A measurement indicating the diameter-pitch per measurement scale of the worm.CFFL

Worm Pitch Diameter:

3.216 inches

MRC:

A numeric value that reflects the hardness of the shaft when used in conjunciton with a hardness rating scale.CFFM

Shaft Hardness Rating:

Between 30.0 rockwell c and 35.0 rockwell c

MRC:

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

Worm Thread Section Length:

3.750 inches

MRC:

A measurement of the longest dimension of the worm body,in distinction from width.CFFP

Worm Body Length:

7.326 inches

MRC:

An indication of whether or not the worm body end/s/ is provided with a tapered bearing surface.CFFQ

Worm Body Tapered Bearing Surface End:

Not provided

MRC:

Indicates the location of the shaft(s) on the item.CFFW

Shaft Location:

Both ends of worm

MRC:

A measurement of the longest dimension of the straight unthreaded portion of the item,in distinction from width.CFFX

Straight Unthreaded Length:

0.125 inches second end, first portion

MRC:

A measurement of the longest dimension of the straight unthreaded portion of the item,in distinction from width.CFFX

Straight Unthreaded Length:

0.125 inches first end, first portion

MRC:

A measurement of the longest dimension of the straight unthreaded portion of the item,in distinction from width.CFFX

Straight Unthreaded Length:

0.875 inches second end, second portion

MRC:

A measurement of the longest dimension of the straight unthreaded portion of the item,in distinction from width.CFFX

Straight Unthreaded Length:

0.875 inches first end, second portion

MRC:

A measurement of the longest dimension of the straight unthreaded portion of the item,in distinction from width.CFFX

Straight Unthreaded Length:

0.921 inches first end, fourth portion

MRC:

A measurement of the longest dimension of the straight unthreaded portion of the item,in distinction from width.CFFX

Straight Unthreaded Length:

1.031 inches second end, third portion

MRC:

A measurement of the longest dimension of the straight unthreaded portion of the item,in distinction from width.CFFX

Straight Unthreaded Length:

1.125 inches first end, third portion

MRC:

A measurement of the longest dimension of the straight unthreaded portion of the item,in distinction from width.CFFX

Straight Unthreaded Length:

1.437 inches second end, fourth portion

MRC:

The length of a straight line which passes through the center of the straight unthreaded section,and terminates at the circumference.CFFY