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NSN: 5306-00-001-9725
Part Number(s):
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Cross Reference

These part numbers have the same form, fit, and function of 1248hx
Item Number Cage
1248HX 75Q65

Characteristic Codes

1248HX spec. code meanings
Code Translation
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.
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.
AASK The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
AASU A measurement from the bottom to the top of the head, in distinction from depth.
AAWB The length of a straight line which passes through the center of the shank unthreaded hole, and terminates at the inside circumference.
AHYM The nominal length of a straight line which passes through the center of the threaded portion, and terminates at the circumference.
CBBL Those features, not otherwise specified, which may be required for proper functioning of the item.
CMLP The number of threads on the item per linear inch measured on a line parallel to the thread axis.
CRZS The distance from the shank hole centerline to the largest bearing surface of the head.
MATT The chemical compound or mechanical mixture properties of which the item is fabricated.
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.


Description: Machine Bolt
Mfr. Cage 75Q65


Thread Length: 1-1/4", Fastener Length: 2-1/4", Thread: 5/8-18, steel overall

AAJD Thread Class
AAJF Thread Direction
AASA Thread Length
1.250 inches
AASB Fastener Length
2.250 inches
AASK Head Style
AASU Head Height
0.469 inches
AATB Width Between Flats
0.875 inches
AAWB Shank Unthreaded Hole Diameter
0.141 inches first hole
AHYM Nominal Thread Diameter
0.625 inches
CBBL Features Provided
Finished head
CMLP Thready Qty Per Inch (tpi)
CRZS Distance From Head Largest Bearing Surface To Shank Hole Center
0.250 inches first hole
MATT Material
THSD Thread Series Designator

Technical Definition

Bolt, Machine, also referenced with federal logistics item name code 01847 - An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. the threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. the head is not designed to be held or driven with an inserted driver or by the thumb and fingers. a locking feature may be incorporated in the design of the head or threads. head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. for items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, bolt, shear. see also screw, cap, hexagon head and screw, machine.
National Stock Number (NSN): 5306-00-001-9725

Last Modified: 02/14/2017