Part Number
Part Number:
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.
CAGE Information
Code |
Company |
80205 |
NATIONAL AEROSPACE STANDARDS COMMITT |
Characteristics (Decoded)
MRC |
Requirements Statement |
Clear Text Reply |
AHYM |
NOMINAL THREAD DIAMETER |
0.1900 INCHES |
THSD |
THREAD SERIES DESIGNATOR |
UNJF |
ANEE |
GRIP LENGTH |
0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM |
CQBC |
MINIMUM TENSILE STRENGTH |
160000 POUNDS PER SQUARE INCH |
AASA |
THREAD LENGTH |
0.308 INCHES MINIMUM AND 0.338 INCHES MAXIMUM |
AAJD |
THREAD CLASS |
3A |
MATT |
MATERIAL |
STEEL COMP 4340 OVERALL OR STEEL COMP 8740 OVERALL |
ABQZ |
INTERNAL DRIVE STYLE |
TRI-WING RECESS |
AAJF |
THREAD DIRECTION |
RIGHT-HAND |
AASK |
HEAD STYLE |
FLAT COUNTERSUNK |
CRSQ |
COUNTERSINK ANGLE |
99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
AAUR |
GRIP DIAMETER |
0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM |
AASB |
FASTENER LENGTH |
1.183 INCHES MINIMUM AND 1.213 INCHES MAXIMUM |
MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OVERALL AND MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OVERALL AND AMS6322 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
ZZZK |
SPECIFICATION/STANDARD DATA |
80205-NAS4403 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
SFTT |
SURFACE TREATMENT |
CADMIUM OVERALL AND CHROMATE OVERALL |
AASL |
HEAD DIAMETER |
0.338 INCHES MINIMUM AND 0.381 INCHES MAXIMUM |
STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-416 TY2 CL 3 FED SPEC 1ST TREATMENT RESPONSE OVERALL |
CMLP |
THREAD QUANTITY PER INCH |
32 |
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