Part Number
Part Number:
NSN:
NIIN:
Item Name:
SCREW , SHOULDER
Definition:
AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER, NO 0 (0.060 IN.) (1.5 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 DESIGNED TO BE DRIVEN WITH EITHER A WRENCH OR AN INSERTED DRIVER OR BOTH IN SIZES BELOW NO. 10 (0.190 IN.) (5 MM) NOMINAL DIAMETER. NO. 10 (0.190 IN.) (5 MM) AND LARGER SIZES MUST BE DESIGNED FOR ANY TYPE OF INSERTED DRIVER, BUT MAY ALSO PROVIDE FOR EXTERNAL WRENCHING OF THE HEAD. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. FOR ITEMS WHICH ARE BOTH SHOULDERED AND HAVE AN EXTERNALLY RELIEVED BODY, USE SCREW, EXTERNALLY RELIEVED BODY. FOR ITEMS WITH A NO. 10 (0.190 IN.) (5 MM) OR LARGER THREAD DIAMETER WITHOUT AN INSERTED DRIVER HEAD, USE BOLT, SHOULDER. EXCLUDES BOLT, INTERNAL WRENCHING AND SCREW, CAP, SOCKET HEAD.
CAGE Information
| Code |
Company |
| 1PQF4 |
L-3 COMMUNICATIONS CORPORATION DIV L |
Characteristics (Decoded)
| MRC |
Requirements Statement |
Clear Text Reply |
| AASA |
THREAD LENGTH |
0.144 INCHES MINIMUM |
| ABQZ |
INTERNAL DRIVE STYLE |
SLOT |
| CQFM |
HARDNESS RATING |
61.7 ROCKWELL B MINIMUM OVERALL AND 90.7 ROCKWELL B MAXIMUM OVERALL |
| AASL |
HEAD DIAMETER |
0.172 INCHES NOMINAL |
| AHYM |
NOMINAL THREAD DIAMETER |
0.099 INCHES |
| MATT |
MATERIAL |
STEEL COMP 303 OVERALL OR STEEL COMP 303 PLUS X OVERALL OR STEEL COMP 303SE OVERALL |
| CWYB |
SHOULDER SHAPE |
ROUND FIRST SHOULDER |
| AATX |
SHOULDER LENGTH |
0.090 INCHES NOMINAL FIRST SHOULDER |
| AASB |
FASTENER LENGTH |
0.234 INCHES NOMINAL |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASK |
HEAD STYLE |
FLAT CHAMFER |
| THSD |
THREAD SERIES DESIGNATOR |
UNF |
| AAJD |
THREAD CLASS |
2A |
| CMLP |
THREAD QUANTITY PER INCH |
56 |
| AATN |
SHOULDER DIAMETER |
0.125 INCHES NOMINAL FIRST SHOULDER |
| SFTT |
SURFACE TREATMENT |
PASSIVATE OVERALL |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
AMS 5640 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| AASU |
HEAD HEIGHT |
0.030 INCHES NOMINAL |
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