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Part Number

Part Number:
NSN:
NIIN:
Item Name:
BOLT , INTERNALLY RELIEVED BODY

Definition:

AN EXTERNALLY THREADED FASTENER WHOSE EXTERNAL THREADED PORTION IS OF ONE NOMINAL DIAMETER. IT HAS A CONCENTRIC HOLE ALONG THE LONGITUDINAL CENTERLINE WHICH MAY EXTEND A PART OR THE FULL LENGTH OF THE BOLT. THE CONCENTRIC HOLE ALONG THE CENTERLINE MAY BE COUNTERBORED AND/OR INTERNALLY THREADED AT THE HEAD END OR THE BOLT END. THE HEAD IS DESIGNED TO BE HELD OR DRIVEN BY AN EXTERNAL AND/OR INTERNAL DRIVER. FOR ITEMS HAVING A HOLE(S) PERPENDICULAR TO THE AXIS WHICH MEET THE CONCENTRIC HOLE ALONG THE LONGITUDINAL CENTERLINE, SEE BOLT, FLUID PASSAGE.

CAGE Information

Code Company
80378 TRIUMPH AEROSTRUCTURES, LLC DBA TRIU

Federal Supply Class

Title

BOLTS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
BZRR THREAD SERIES UNF CONCENTRIC HOLE
BZRR THREAD SERIES UNF CONCENTRIC HOLE
MATT MATERIAL STEEL COMP 4340 OVERALL
AAJD THREAD CLASS 3A
AASU HEAD HEIGHT 0.300 INCHES NOMINAL
AAWB SHANK UNTHREADED HOLE DIAMETER 0.203 INCHES NOMINAL FIRST HOLE
AASB FASTENER LENGTH 5.740 INCHES MINIMUM AND 5.780 INCHES MAXIMUM
AHYM NOMINAL THREAD DIAMETER 0.250 INCHES
AASA THREAD LENGTH 0.920 INCHES NOMINAL
CQJX NOMINAL THREAD SIZE 0.562 INCHES CONCENTRIC HOLE
AAJF THREAD DIRECTION RIGHT-HAND
THSD THREAD SERIES DESIGNATOR UNF
AASK HEAD STYLE HEXAGON
STYL STYLE DESIGNATOR CONCENTRIC HOLE THREADED
CRZS DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER 5.510 INCHES NOMINAL FIRST HOLE
CMLP THREAD QUANTITY PER INCH 12
AAEL THREADS PER INCH 18 CONCENTRIC HOLE
AATB WIDTH BETWEEN FLATS 2.250 INCHES NOMINAL

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