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 |
| 06950 |
ALCOA GLOBAL FASTENERS INC. DBA ALCO |
| L4528 |
LISI AEROSPACE CANADA CORP |
| 17446 |
HUCK INTERNATIONAL INC. DBA ALCOA FA |
| 92215 |
ALCOA GLOBAL FASTENERS INC. DBA ALCO |
| 73197 |
HI-SHEAR CORPORATION |
| 80539 |
SPS TECHNOLOGIES LLC DBA AEROSPACE F |
| 56878 |
SPS TECHNOLOGIES LLC DBA AEROSPACE D |
| 76301 |
BOEING COMPANY THE DBA BOEING |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC |
Requirements Statement |
Clear Text Reply |
| CMLP |
THREAD QUANTITY PER INCH |
24 |
| AATN |
SHOULDER DIAMETER |
0.3260 INCHES MINIMUM FIRST SHOULDER AND 0.3270 INCHES MAXIMUM FIRST SHOULDER |
| CRSQ |
COUNTERSINK ANGLE |
100.0 DEGREES NOMINAL |
| AASA |
THREAD LENGTH |
0.532 INCHES MINIMUM |
| AAJD |
THREAD CLASS |
3A |
| CWYB |
SHOULDER SHAPE |
ROUND FIRST SHOULDER |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASK |
HEAD STYLE |
FLAT COUNTERSUNK |
| MATT |
MATERIAL |
STEEL OVERALL |
| AASL |
HEAD DIAMETER |
0.628 INCHES MINIMUM AND 0.633 INCHES MAXIMUM |
| THSD |
THREAD SERIES DESIGNATOR |
UNF |
| ABQZ |
INTERNAL DRIVE STYLE |
HIGH-TORQUE |
| AHYM |
NOMINAL THREAD DIAMETER |
0.312 INCHES |
| AATX |
SHOULDER LENGTH |
0.729 INCHES MINIMUM FIRST SHOULDER AND 0.731 INCHES MAXIMUM FIRST SHOULDER |
| SFTT |
SURFACE TREATMENT |
CADMIUM OVERALL |
| AASB |
FASTENER LENGTH |
1.344 INCHES NOMINAL |
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