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 |
58998 |
EMHART TEKNOLOGIES LLC DBA FASTENER |
73197 |
HI-SHEAR CORPORATION |
80205 |
NATIONAL AEROSPACE STANDARDS COMMITT |
L4528 |
LISI AEROSPACE CANADA CORP |
53606 |
PLASTIC AND METAL PRODUCTS CORPORATI |
56878 |
SPS TECHNOLOGIES LLC DBA AEROSPACE D |
17446 |
HUCK INTERNATIONAL INC. DBA ALCOA FA |
07851 |
NOR-CAL SUPPLY CO.INC. |
80539 |
SPS TECHNOLOGIES LLC DBA AEROSPACE F |
50568 |
APCOM INC |
92215 |
ALCOA GLOBAL FASTENERS INC. DBA ALCO |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
MRC |
Requirements Statement |
Clear Text Reply |
CSYM |
SURFACE FINISH |
32.0 MICROINCHES THREADS |
CSYM |
SURFACE FINISH |
32.0 MICROINCHES GRIP |
MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
THSD |
THREAD SERIES DESIGNATOR |
UNJF |
CSYM |
SURFACE FINISH |
32.0 MICROINCHES BEARING SURFACE OF HEAD |
ZZZK |
SPECIFICATION/STANDARD DATA |
80205-NAS1134 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
AASA |
THREAD LENGTH |
0.291 INCHES MINIMUM AND 0.341 INCHES MAXIMUM |
AASB |
FASTENER LENGTH |
0.926 INCHES MINIMUM AND 0.956 INCHES MAXIMUM |
CQBC |
MINIMUM TENSILE STRENGTH |
160000 POUNDS PER SQUARE INCH |
AAJD |
THREAD CLASS |
3A |
AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
CMLP |
THREAD QUANTITY PER INCH |
28 |
AAJF |
THREAD DIRECTION |
RIGHT-HAND |
MATT |
MATERIAL |
IRON ALLOY 660 OVERALL |
AASL |
HEAD DIAMETER |
0.473 INCHES MINIMUM AND 0.492 INCHES MAXIMUM |
AASU |
HEAD HEIGHT |
0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM |
AAUR |
GRIP DIAMETER |
0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM |
STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
ABQZ |
INTERNAL DRIVE STYLE |
OFFSET CRUCIFORM (TORQUE SET) |
SFTT |
SURFACE TREATMENT |
PASSIVATE OVERALL |
ANEE |
GRIP LENGTH |
0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM |
AASK |
HEAD STYLE |
PAN |
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