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Part Number

Part Number:
NSN:
NIIN:
Item Name:
BOLT , RIBBED SHOULDER

Definition:

AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER. IT HAS A SERIES OF LONGITUDINAL RIBS, SPLINES OR SERRATIONS ON ALL OR A PART OF THE SHOULDER. THE MINOR DIAMETER OF THE RIBS MUST BE GREATER THAN THE MAJOR DIAMETER OF THE THREADS. SEE ALSO BOLT, RIBBED NECK.

CAGE Information

Code Company
23705 FRUEHAUF CORP

Federal Supply Class

Title

BOLTS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AAVR DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS 0.281 INCHES NOMINAL
AAVR DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS 0.281 INCHES NOMINAL
MATT MATERIAL STEEL COMP 4620 OVERALL OR STEEL COMP 8622 OVERALL OR STEEL COMP 8620 OVERALL OR STEEL COMP 4427 OVERALL
AASL HEAD DIAMETER 1.312 INCHES NOMINAL
AAJD THREAD CLASS 3A
CWYB SHOULDER SHAPE ROUND FIRST SHOULDER
AAVP RIB MAJOR DIAMETER 1.020 INCHES MINIMUM AND 1.023 INCHES MAXIMUM
AAJF THREAD DIRECTION RIGHT-HAND
AASK HEAD STYLE FLAT CHAMFER
AASU HEAD HEIGHT 0.312 INCHES NOMINAL
AATN SHOULDER DIAMETER 0.973 INCHES MINIMUM FIRST SHOULDER AND 0.977 INCHES MAXIMUM FIRST SHOULDER
THSD THREAD SERIES DESIGNATOR UNF
AASB FASTENER LENGTH 2.562 INCHES NOMINAL
AASA THREAD LENGTH 1.250 INCHES MINIMUM
AAVQ RIB LENGTH 0.438 INCHES NOMINAL
CMLP THREAD QUANTITY PER INCH 16
AAVU RIB QUANTITY 36
AHYM NOMINAL THREAD DIAMETER 0.750 INCHES
AATX SHOULDER LENGTH 0.938 INCHES NOMINAL FIRST SHOULDER
CRKB RIB INCLUDED ANGLE 90.0 DEGREES NOMINAL
SFTT SURFACE TREATMENT CADMIUM OVERALL
AAVT RIB MINOR DIAMETER 0.930 INCHES MINIMUM AND 0.945 INCHES MAXIMUM

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