Part Information
Material specification astm-a564, type-630, condition-h1150, hot finished and astm-a484. Surface finish 63.0 on acme threads. Worm is 0.750-8 acme-2g

NSN

National Stock Number:

3040-01-504-8342 3040015048342

TXT

Description:

Worm Shaft

INC

Item Name Code:

18249

MRC:

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

Thread Length:

1.000 inches first end, second portion

MRC:

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

Overall Length:

12.120 inches

MRC:

The national stock number or the identification information of the end equipment for which the item is a part.AGAV

End Application:

Bridge, track assembly for cargo bay 3rd platform for seawolf class submarine ssn 23

MRC:

A designation distinguishing one group of screw thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.AJYP

Screw Thread Series Designator:

Uns first end, second portion

MRC:

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

Shaft Thread Direction:

Right-hand first end, second portion

MRC:

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

Teeth Hardness Rating:

38.0 rockwell c

MRC:

The physical configuration of the section(s).CCKD

Section Shape:

Square first end, first portion

MRC:

The number of threads on the worm.CFFB

Worm Thread Quantity:

58

MRC:

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

Worm Thread Lead:

0.125 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:

14.500

MRC:

The angular amount the worm is inclined.CFFG

Worm Helix Angle:

3.312 degrees

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:

0.750 inches

MRC:

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

Worm Pitch Diameter:

Between 0.665 inches and 0.681 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:

38.0 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:

7.240 inches

MRC:

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

Worm Body Length:

12.120 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:

Provided

MRC:

The length of a straight line which passes through the center of the largest tapered bearing surface,and terminates at the circumference.CFFR

Err Default:

Err default

MRC:

The length of a straight line which passes through the center of the smallest tapered bearing surface,and terminates at the circumference.CFFS

Err Default:

Err default

MRC:

A measurement of the longest dimension of the tapered bearing surface,in distinction from width.CFFT

Tapered Bearing Surface Length:

0.050 inches

MRC:

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

Shaft Location:

One end 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:

0.120 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:

0.630 inches first end, fifth portion

MRC:

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

Straight Unthreaded Length:

0.750 inches first end, sixth portion

MRC:

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

Straight Unthreaded Length:

0.880 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:

1.000 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:

1.500 inches first end, first portion

MRC:

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