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 |
| MATT |
MATERIAL |
STEEL COMP 4140 OVERALL OR STEEL COMP E4340 OVERALL OR STEEL COMP 8740 OVERALL |
| THSD |
THREAD SERIES DESIGNATOR |
UNJC |
| AASA |
THREAD LENGTH |
0.278 INCHES NOMINAL |
| CQBC |
MINIMUM TENSILE STRENGTH |
160000 POUNDS PER SQUARE INCH |
| AAJD |
THREAD CLASS |
3A |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| ZZZK |
SPECIFICATION/STANDARD DATA |
80205-NAS1141 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| AASL |
HEAD DIAMETER |
0.258 INCHES MINIMUM AND 0.276 INCHES MAXIMUM |
| AAUR |
GRIP DIAMETER |
0.1365 INCHES MINIMUM AND 0.1375 INCHES MAXIMUM |
| SFTT |
SURFACE TREATMENT |
CADMIUM OVERALL AND CHROMATE OVERALL |
| ANEE |
GRIP LENGTH |
0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM |
| ABQZ |
INTERNAL DRIVE STYLE |
OFFSET CRUCIFORM (TORQUE SET) |
| CMLP |
THREAD QUANTITY PER INCH |
32 |
| AHYM |
NOMINAL THREAD DIAMETER |
0.138 INCHES |
| AASB |
FASTENER LENGTH |
0.388 INCHES MINIMUM AND 0.418 INCHES MAXIMUM |
| AASK |
HEAD STYLE |
PAN |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OVERALL OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OVERALL OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE OVERALL |
| AASU |
HEAD HEIGHT |
0.074 INCHES MINIMUM AND 0.086 INCHES MAXIMUM |
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