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 |
| CMLP |
THREAD QUANTITY PER INCH |
24 |
| ASDB |
WIDTH ACROSS FLATS |
0.1885 INCHES MINIMUM AND 0.1905 INCHES MAXIMUM |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| CRSQ |
COUNTERSINK ANGLE |
100.0 DEGREES NOMINAL |
| MATT |
MATERIAL |
STEEL COMP 4140 OVERALL |
| THSD |
THREAD SERIES DESIGNATOR |
UNJF |
| ZZZK |
SPECIFICATION/STANDARD DATA |
80205-NAS335-26 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| CQBC |
MINIMUM TENSILE STRENGTH |
160000 POUNDS PER SQUARE INCH |
| AAJD |
THREAD CLASS |
3A |
| AAUR |
GRIP DIAMETER |
0.3112 INCHES MINIMUM AND 0.3117 INCHES MAXIMUM |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASL |
HEAD DIAMETER |
0.623 INCHES MINIMUM AND 0.633 INCHES MAXIMUM |
| AASB |
FASTENER LENGTH |
2.827 INCHES MINIMUM AND 2.859 INCHES MAXIMUM |
| ANEE |
GRIP LENGTH |
2.312 INCHES NOMINAL |
| ABQZ |
INTERNAL DRIVE STYLE |
HEXAGON |
| AASK |
HEAD STYLE |
FLAT COUNTERSUNK UNDERCUT |
| AASU |
HEAD HEIGHT |
0.133 INCHES NOMINAL |
| AASA |
THREAD LENGTH |
0.531 INCHES NOMINAL |
| SFTT |
SURFACE TREATMENT |
CADMIUM OVERALL |
| AHYM |
NOMINAL THREAD DIAMETER |
0.3125 INCHES |
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