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 |
06950 |
ALCOA GLOBAL FASTENERS INC. DBA ALCO |
80539 |
SPS TECHNOLOGIES LLC DBA AEROSPACE F |
K5673 |
SPS TECHNOLOGIES LTD TJ BROOKS DIVIS |
17446 |
HUCK INTERNATIONAL INC. DBA ALCOA FA |
56878 |
SPS TECHNOLOGIES LLC DBA AEROSPACE D |
92215 |
ALCOA GLOBAL FASTENERS INC. DBA ALCO |
L4528 |
LISI AEROSPACE CANADA CORP |
97928 |
HUCK INTL INC |
73197 |
HI-SHEAR CORPORATION |
76301 |
BOEING COMPANY THE DBA BOEING |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
MRC |
Requirements Statement |
Clear Text Reply |
CSYM |
SURFACE FINISH |
32.0 MICROINCHES THREADS |
AHYM |
NOMINAL THREAD DIAMETER |
0.190 INCHES |
CSYM |
SURFACE FINISH |
32.0 MICROINCHES GRIP |
CRSQ |
COUNTERSINK ANGLE |
100.0 DEGREES NOMINAL |
THSD |
THREAD SERIES DESIGNATOR |
UNJF |
CSYM |
SURFACE FINISH |
32.0 MICROINCHES BEARING SURFACE OF HEAD |
AAJD |
THREAD CLASS |
3A |
AASL |
HEAD DIAMETER |
0.4625 INCHES MINIMUM AND 0.4676 INCHES MAXIMUM |
AASU |
HEAD HEIGHT |
0.0800 INCHES MINIMUM AND 0.0820 INCHES MAXIMUM |
FEAT |
SPECIAL FEATURES |
FURNISHED WITH O'RING |
AAJF |
THREAD DIRECTION |
RIGHT-HAND |
ANEE |
GRIP LENGTH |
0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
MATT |
MATERIAL |
TITANIUM ALLOY OVERALL |
MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
AMS 4967 6AL-4V ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
ABQZ |
INTERNAL DRIVE STYLE |
HIGH-TORQUE |
AASA |
THREAD LENGTH |
0.380 INCHES MINIMUM AND 0.447 INCHES MAXIMUM |
AASK |
HEAD STYLE |
FLAT COUNTERSUNK UNDERCUT |
AAUR |
GRIP DIAMETER |
0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM |
CMLP |
THREAD QUANTITY PER INCH |
32 |
AASB |
FASTENER LENGTH |
0.890 INCHES MINIMUM AND 0.937 INCHES MAXIMUM |
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