National Stock Number (NSN) Output Data
NSN:
NIIN:
Item Name:
SCREW , CLOSE TOLERANCE
Definition:
A SCREW, MACHINE OR SCREW, CAP, SOCKET HEAD WHOSE UNTHREADED PORTION IS OF SPECIFIED GRIP LENGTH, PLATED OR UNPLATED, AND IS MACHINED TO A TOLERANCE OF ONE THOUSANDTH (0.001 IN.) (0.025 MM) OR LESS OF A SPECIFIC DIAMETER FOR ITEMS (1.000 IN.) (25 MM) OR LESS IN DIAMETER. ITEMS OVER (1.000 IN.) (25 MM) IN DIAMETER SHALL HAVE A TOLERANCE OF FIFTEEN TEN THOUSANDTHS (0.0015 IN.) (0.038 MM) OR LESS. THE NOMINAL MAJOR DIAMETER OF THE THREADS SHALL BE AT LEAST ONE THOUSANDTH (0.001 IN.) (0.025 MM) BELOW THE MINIMUM SHANK DIAMETER, BUT NOT BELOW THE MINIMUM MAJOR DIAMETER FOR APPLICABLE CLASS OF FIT, AS SHOWN IN THE SCREW THREAD STANDARDS, FED STD H28 AND/OR OTHER NATIONALLY RECOGNIZED STANDARDS. THE HEAD IS DESIGNED TO BE HELD OR DRIVEN WITH AN INSERTED DRIVER. IT IS NOT DESIGNED FOR ROTATION BY THE THUMB AND FINGERS. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS.
Reference/Part Number
CAGE Information
| Code |
Company |
| 29732 |
LOCKHEED MARTIN CORPORATION |
| 80378 |
TRIUMPH AEROSTRUCTURES, LLC DBA TRIU |
| 84256 |
AVIBANK MFG. INC. |
| 92215 |
ALCOA GLOBAL FASTENERS INC. DBA ALCO |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC |
Requirements Statement |
Clear Text Reply |
| ABQZ |
INTERNAL DRIVE STYLE |
SLOT |
| ABQZ |
INTERNAL DRIVE STYLE |
SLOT |
| AASU |
HEAD HEIGHT |
0.126 INCHES MINIMUM AND 0.141 INCHES MAXIMUM |
| AASA |
THREAD LENGTH |
0.402 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| AAUR |
GRIP DIAMETER |
0.2483 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
| CMLP |
THREAD QUANTITY PER INCH |
28 |
| AASB |
FASTENER LENGTH |
2.418 INCHES MINIMUM AND 2.438 INCHES MAXIMUM |
| SFTT |
SURFACE TREATMENT |
CADMIUM FASTENER AND CHROMATE FASTENER |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| SFTT |
SURFACE TREATMENT |
PASSIVATE SPRING |
| AASK |
HEAD STYLE |
CROWNED HEXAGON |
| THSD |
THREAD SERIES DESIGNATOR |
UNF |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| AATB |
WIDTH BETWEEN FLATS |
0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM |
| CRZS |
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER |
2.323 INCHES MINIMUM FIRST HOLE AND 2.343 INCHES MAXIMUM FIRST HOLE |
| ANEE |
GRIP LENGTH |
2.000 INCHES MINIMUM AND 2.016 INCHES MAXIMUM |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SPRING |
| CQFM |
HARDNESS RATING |
39.0 ROCKWELL C MINIMUM FASTENER AND 45.0 ROCKWELL C MAXIMUM FASTENER |
| AAUM |
LOCKING FEATURE |
DETENT BALL GRIP |
| AAWB |
SHANK UNTHREADED HOLE DIAMETER |
0.076 INCHES MINIMUM FIRST HOLE AND 0.086 INCHES MAXIMUM FIRST HOLE |
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