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 |
04348 |
LAWRENCE ENGINEERING AND SUPPLY INC |
73197 |
HI-SHEAR CORPORATION |
50568 |
APCOM INC |
30889 |
ERIKS SOUTHWEST INC DBA MONTCLAIR EN |
L4528 |
LISI AEROSPACE CANADA CORP |
56878 |
SPS TECHNOLOGIES LLC DBA AEROSPACE D |
08938 |
AIR INDUSTRIES CO INC |
80539 |
SPS TECHNOLOGIES LLC DBA AEROSPACE F |
82172 |
DURHAM AIRCRAFT SERVICE INC |
71563 |
COLLINS ENGINEERING CORP |
30902 |
F AND C SALES INC |
07851 |
NOR-CAL SUPPLY CO.INC. |
80205 |
NATIONAL AEROSPACE STANDARDS COMMITT |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
MRC |
Requirements Statement |
Clear Text Reply |
CMLP |
THREAD QUANTITY PER INCH |
24 |
CMLP |
THREAD QUANTITY PER INCH |
24 |
CRSQ |
COUNTERSINK ANGLE |
100.0 DEGREES NOMINAL |
CQBC |
MINIMUM TENSILE STRENGTH |
160000 POUNDS PER SQUARE INCH |
AAJD |
THREAD CLASS |
3A |
ANEE |
GRIP LENGTH |
1.615 INCHES MINIMUM AND 1.635 INCHES MAXIMUM |
AASA |
THREAD LENGTH |
0.331 INCHES MINIMUM |
ABQZ |
INTERNAL DRIVE STYLE |
CROSS RECESS TYPE 1 |
AAJF |
THREAD DIRECTION |
RIGHT-HAND |
CQFM |
HARDNESS RATING |
36.0 ROCKWELL C MINIMUM OVERALL AND 40.0 ROCKWELL C MAXIMUM OVERALL |
AASK |
HEAD STYLE |
FLAT COUNTERSUNK |
MATT |
MATERIAL |
STEEL OVERALL |
ZZZK |
SPECIFICATION/STANDARD DATA |
80205-NAS1206 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
AASB |
FASTENER LENGTH |
2.016 INCHES NOMINAL |
AAUR |
GRIP DIAMETER |
0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM |
THSD |
THREAD SERIES DESIGNATOR |
UNF |
AHYM |
NOMINAL THREAD DIAMETER |
0.375 INCHES |
SFTT |
SURFACE TREATMENT |
CADMIUM OVERALL AND CHROMATE OVERALL |
AASL |
HEAD DIAMETER |
0.704 INCHES MINIMUM AND 0.762 INCHES MAXIMUM |
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