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Part Number

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

Definition:

AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER, NO. 10 (0.190 IN.) (5 MM) OR LARGER. IT HAS A ROUND UNTHREADED NECK OR SHANK ALL OR PART OF WHICH IS OF GREATER DIAMETER THAN THE THREADED PORTION. THE HEAD IS NOT DESIGNED TO BE HELD OR DRIVEN WITH AN INSERTED DRIVERS. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. FOR ITEMS WITH A THREAD DIAMETER SMALLER THAN NO. 10 (0.190 IN.) (5 MM) AND THOSE ITEMS WITH AN INSERTED DRIVE HEAD, USE SCREW, SHOULDER. FOR ITEMS WHICH ARE NO. 10 (0.190 IN.) (5 MM) OR LARGER IN SIZE AND ARE BOTH SHOULDERED AND HAVE AN EXTERNALLY RELIEVED BODY, USE BOLT, EXTERNALLY RELIEVED BODY. EXCLUDES THUMBSCREW.

CAGE Information

Code Company
06950 ALCOA GLOBAL FASTENERS INC. DBA ALCO

Federal Supply Class

Title

BOLTS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AASU HEAD HEIGHT 0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM
AASU HEAD HEIGHT 0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM
AATX SHOULDER LENGTH 0.865 INCHES MINIMUM FIRST SHOULDER AND 0.885 INCHES MAXIMUM FIRST SHOULDER
AAJD THREAD CLASS 3A
CWYB SHOULDER SHAPE ROUND FIRST SHOULDER
AHYM NOMINAL THREAD DIAMETER 0.250 INCHES
CMLP THREAD QUANTITY PER INCH 28
AATN SHOULDER DIAMETER 0.3115 INCHES MINIMUM FIRST SHOULDER AND 0.3120 INCHES MAXIMUM FIRST SHOULDER
AAJF THREAD DIRECTION RIGHT-HAND
MATT MATERIAL IRON ALLOY 660 OVERALL
THSD THREAD SERIES DESIGNATOR UNF
AASA THREAD LENGTH 0.351 INCHES MINIMUM AND 0.425 INCHES MAXIMUM
AATB WIDTH BETWEEN FLATS 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM
AASK HEAD STYLE DISHED HEXAGON
CRZS DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER 1.102 INCHES MINIMUM FIRST HOLE AND 1.142 INCHES MAXIMUM FIRST HOLE
AASB FASTENER LENGTH 1.290 INCHES MINIMUM AND 1.310 INCHES MAXIMUM
AAWB SHANK UNTHREADED HOLE DIAMETER 0.076 INCHES MINIMUM FIRST HOLE AND 0.086 INCHES MAXIMUM FIRST HOLE
SFTT SURFACE TREATMENT PASSIVATE OVERALL

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