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 |
L4528 |
LISI AEROSPACE CANADA CORP |
80539 |
SPS TECHNOLOGIES LLC DBA AEROSPACE F |
K5673 |
SPS TECHNOLOGIES LTD TJ BROOKS DIVIS |
50392 |
SPS TECHNOLOGIES INC |
92215 |
ALCOA GLOBAL FASTENERS INC. DBA ALCO |
76301 |
BOEING COMPANY THE DBA BOEING |
73197 |
HI-SHEAR CORPORATION |
17446 |
HUCK INTERNATIONAL INC. DBA ALCOA FA |
97928 |
HUCK INTL INC |
56878 |
SPS TECHNOLOGIES LLC DBA AEROSPACE D |
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 THREADS |
CMLP |
THREAD QUANTITY PER INCH |
24 |
CSYM |
SURFACE FINISH |
32.0 MICROINCHES GRIP |
AAUR |
GRIP DIAMETER |
0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM |
THSD |
THREAD SERIES DESIGNATOR |
UNJF |
AAJD |
THREAD CLASS |
3A |
AAJF |
THREAD DIRECTION |
RIGHT-HAND |
AASB |
FASTENER LENGTH |
1.140 INCHES MINIMUM AND 1.187 INCHES MAXIMUM |
MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
NAS 621,6AL-4V ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
AASL |
HEAD DIAMETER |
0.628 INCHES MINIMUM AND 0.633 INCHES MAXIMUM |
AASA |
THREAD LENGTH |
0.505 INCHES MINIMUM AND 0.572 INCHES MAXIMUM |
MATT |
MATERIAL |
TITANIUM ALLOY UNS R54520 OVERALL |
ABQZ |
INTERNAL DRIVE STYLE |
HIGH-TORQUE |
AASK |
HEAD STYLE |
FLAT COUNTERSUNK UNDERCUT |
CRSQ |
COUNTERSINK ANGLE |
100.0 DEGREES MINIMUM |
AHYM |
NOMINAL THREAD DIAMETER |
0.312 INCHES |
AASU |
HEAD HEIGHT |
0.087 INCHES MINIMUM AND 0.089 INCHES MAXIMUM |
ANEE |
GRIP LENGTH |
0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM |
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