National Stock Number (NSN) Output Data
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.
Reference/Part Number
CAGE Information
| Code |
Company |
| 25685 |
NAVAL SHIP ENGINEERING CENTER PHILAD |
| 81348 |
FEDERAL SPECIFICATIONS PROMULGATED B |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC |
Requirements Statement |
Clear Text Reply |
| AATX |
SHOULDER LENGTH |
0.440 INCHES NOMINAL FIRST SHOULDER |
| ASDB |
WIDTH ACROSS FLATS |
0.375 INCHES NOMINAL |
| AASU |
HEAD HEIGHT |
0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
QQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| CWYB |
SHOULDER SHAPE |
ROUND FIRST SHOULDER |
| AAUM |
LOCKING FEATURE |
PELLET THREADS |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASK |
HEAD STYLE |
FLAT CHAMFER |
| AASL |
HEAD DIAMETER |
0.735 INCHES MINIMUM AND 0.750 INCHES MAXIMUM |
| CMLP |
THREAD QUANTITY PER INCH |
16 |
| THSD |
THREAD SERIES DESIGNATOR |
UNC |
| AAJD |
THREAD CLASS |
2A |
| AASB |
FASTENER LENGTH |
1.190 INCHES NOMINAL |
| AASA |
THREAD LENGTH |
0.750 INCHES NOMINAL |
| MATT |
MATERIAL |
NICKEL ALLOY R-405 OVERALL OR NICKEL ALLOY 400 OVERALL |
| ABQZ |
INTERNAL DRIVE STYLE |
HEXAGON |
| AHYM |
NOMINAL THREAD DIAMETER |
0.375 INCHES |
| AATN |
SHOULDER DIAMETER |
0.500 INCHES NOMINAL FIRST SHOULDER |
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