Part Number
DEMIL
Shelf Life
UOM
NIIN
Part Information
Screw, externally relieved body, steel, cad pld, sae-ams-s-6758 matl, 4-40 nc 3a x 13/16, 0.240-0.260 in. Diameter of head, 0.105 in. Height of head; 0.194 in. Thd lg; 0.138-0.142 in. First diameter frm head; 0.070-080in. Second diameter from head; 0.547 in. From head to end of first dia; 0.618 in. From hd to end of second dia.; specification applies except as indicated
NSN
National Stock Number:
TXT
Description:
Externally Relieved Body Screw
MRC:
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.AAJD
Thread Class:
3a
MRC:
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.AAJF
Thread Direction:
Right-hand
MRC:
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.AASA
Thread Length:
0.812 inches
MRC:
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.AASB
Fastener Length:
0.812 inches
MRC:
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.AASK
Head Style:
Binding
MRC:
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.AASL
Head Diameter:
Between 0.240 inches and 0.260 inches
MRC:
A measurement from the bottom to the top of the head,in distinction from depth.AASU
Head Height:
0.105 inches
First Diameter From Head:
Between 0.138 inches and 0.142 inches
Second Diameter From Head:
Between 0.070 inches and 0.080 inches
Distance From Largest Bearing Surface Of Head To End Of First Diameter:
0.547 inches
Distance From Largest Bearing Surface Of Head To End Of Second Diameter:
0.618 inches
MRC:
The style designation indicating the configuration that most nearly corresponds to the appearance of the internal drive.ABQZ
Internal Drive Style:
Slot
MRC:
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.AHYM
Thread Diameter:
0.112 inches
MRC:
The number of threads on the item per linear inch measured on a line parallel to the thread axis.CMLP
Thready Qty Per Inch (tpi):
40
MRC:
The maximum rated load in tension applied in a longitudinal direction,per unit of cross-sectional area,that the material can withstand without rupture.CQBC
Min. Tensile Strength (psi):
125000 pounds per square inch
MRC:
The number of externally relieved diameters on the body,adjacent to the head.CSNG
Externally Relieved Body Diameter Quantity:
1
MRC:
The chemical compound or mechanical mixture properties of which the item is fabricated.MATT
Material:
Steel comp 4130 or steel comp 8630 or steel comp 8735 or steel comp 8740
MRC:
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.MDCL
Material Specification:
Mil-s-6758 military specification 1st material response or mil-s-6050 military specification 2nd material response or mil-s-6098 military specification 3rd material response or mil-s-6049 military specification 4th material response
MRC:
The metallic,nonmetallic,and/or chemical properties with which the item is plated,dipped,and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.SFTT
Surface Treatment:
Cadmium
MRC:
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.THSD
Thread Series Designator:
Unc
MRC:
The document designator of the specification or standard which established the item of supply.ZZZK
Specification Data:
81348-ff-s-92 government specification
MRC:
The number,letter,or symbol that indicates the type,style,grade,class,and the like,of an item in a nonidentifying specification or standard.ZZZT
Specification Or Standard:
I type and 8s style
