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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
21450 ARMY WEAPONS COMMAND ATTN AMSWE-REE-

Federal Supply Class

Title

BOLTS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AATN SHOULDER DIAMETER 0.840 INCHES NOMINAL FIRST SHOULDER
AATN SHOULDER DIAMETER 0.840 INCHES NOMINAL FIRST SHOULDER
AATX SHOULDER LENGTH 0.906 INCHES NOMINAL FIRST SHOULDER
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-416,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE OVERALL OR QQ-Z-325,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
AASB FASTENER LENGTH 2.469 INCHES NOMINAL
SFTT SURFACE TREATMENT CADMIUM OVERALL OR ZINC OVERALL
AASL HEAD DIAMETER 1.188 INCHES NOMINAL
AAVP RIB MAJOR DIAMETER 0.875 INCHES NOMINAL
AAJD THREAD CLASS 3A
AAVR DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS 0.125 INCHES NOMINAL
CQFM HARDNESS RATING 300.0 BRINELL STANDARD MINIMUM OVERALL AND 350.0 BRINELL STANDARD MAXIMUM OVERALL
CWYB SHOULDER SHAPE ROUND FIRST SHOULDER
AAJF THREAD DIRECTION RIGHT-HAND
AASK HEAD STYLE FLAT CHAMFER
MATT MATERIAL STEEL COMP 3135 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 8740 OVERALL OR STEEL COMP 8640 OVERALL OR STEEL COMP 4135 OVERALL
AAVU RIB QUANTITY 25
AASU HEAD HEIGHT 0.312 INCHES NOMINAL
AAVQ RIB LENGTH 0.781 INCHES NOMINAL
THSD THREAD SERIES DESIGNATOR UNF
CMLP THREAD QUANTITY PER INCH 16
AHYM NOMINAL THREAD DIAMETER 0.750 INCHES
CBBL FEATURES PROVIDED CASEHARDENED
AASA THREAD LENGTH 1.156 INCHES MINIMUM
FEAT SPECIAL FEATURES 5/32 IN. BY 45 DEG CHAMFER ON HEAD END

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