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NSN: 5306-00-001-4807
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Part Numbers

Item Number Item Description
MS27576-5-22 Bolt, Close Tolerance
106467-5-22 Bolt, Close Tolerance
AS194-5-22 Bolt, Close Tolerance
CA4510-5-22 Bolt, Close Tolerance

Master Requirement Codes

Code Translation
CRZS The distance from the shank hole centerline to the largest bearing surface of the head.
AASB 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.
AAUR The length of a straight line which passes through the center of the grip, and terminates at the circumference.
ANEE A measurement of the longest dimension of the grip, in distinction from width.
CQFM A numeric value that reflects the hardness of an item when used in conjunction with a hardness rating scale.
AASU A measurement from the bottom to the top of the head, in distinction from depth.
AASK The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
MATT The chemical compound or mechanical mixture properties of which the item is fabricated.
AHYM The nominal length of a straight line which passes through the center of the threaded portion, and terminates at the circumference.
AAWB The length of a straight line which passes through the center of the shank unthreaded hole, and terminates at the inside circumference.
FEAT Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification.
CSYM Designates the specific surface roughness rating, representing the arithmetic average deviation of the surface from the meanline in profile.
CSYM Designates the specific surface roughness rating, representing the arithmetic average deviation of the surface from the meanline in profile.
STDC The specification, standard, or manufacturers reference, and the classification designation, such as type, class, grade, and the like, that identifies the surface treatment material.
SFTT 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.
AAJD A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
AAJF 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.
AASA A measurement of the extent of threads, including incomplete threads, along a line parallel to the longitudinal axis.
CMLP The number of threads on the item per linear inch measured on a line parallel to the thread axis.
THSD A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.

CA4510-5-22 Close Tolerance Bolt

Cage 29372

Technical Definition

Bolt, Close Tolerance, also referenced with federal logistics item name code 27851 - 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.

Technical Characteristics

Distance From Head Largest Bearing Surface To Shank Hole Center (CRZS):
1.738 inches minimum first hole and 1.768 inches maximum first hole
Fastener Length (AASB):
1.853 inches minimum and 1.873 inches maximum
Grip Diameter (AAUR):
0.3108 inches minimum and 0.3117 inches maximum
Grip Length (ANEE):
1.375 inches minimum and 1.391 inches maximum
Hardness Rating (CQFM):
36.0 rockwell c minimum overall and 41.0 rockwell c maximum overall
Head Height (AASU):
0.157 inches minimum and 0.172 inches maximum
Head Style (AASK):
Dished hexagon
Material (MATT):
Steel comp e4340 overall or steel comp 4340 overall or steel comp 8740 overall or steel comp 4130 overall or steel comp 6150 overall
Nominal Thread Diameter (AHYM):
0.312 inches
Shank Unthreaded Hole Diameter (AAWB):
0.076 inches minimum first hole and 0.086 inches maximum first hole
Special Features (FEAT):
W/retaining element on shank
Width Between Flats (AATB):
0.492 inches minimum and 0.502 inches maximum
Surface Finish (CSYM):
63.0 microinches bearing surface of head
Surface Finish (CSYM):
63.0 microinches grip
Surface Treatment Document And Classification (STDC):
Qq-p-416 ty 2 cl 2 fed spec all treatment responses overall
Surface Treatment (SFTT):
Cadmium overall and chromate overall
Thread Class (AAJD):
3a
Thread Direction (AAJF):
Right-hand
Thread Length (AASA):
0.311 inches minimum and 0.378 inches maximum
Thread Quantity Per Inch (CMLP):
24
Thread Series Designator (THSD):
Unjf

National Stock Number (NSN)

5306-00-001-4807