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
| Part Number |
CAGE |
Status |
RNCC |
RNVC |
DAC |
RNAAC |
MSDS |
SADC |
| NAS334CF20-5 |
80205 |
A |
3 |
2 |
4 |
KZ |
|
|
CAGE Information
| Code |
Company |
| 80205 |
NATIONAL AEROSPACE STANDARDS COMMITT |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC |
Requirements Statement |
Clear Text Reply |
| AASL |
HEAD DIAMETER |
0.497 INCHES MINIMUM AND 0.507 INCHES MAXIMUM |
| CSYM |
SURFACE FINISH |
32.0 MICROINCHES GRIP |
| ANEE |
GRIP LENGTH |
1.614 INCHES MINIMUM AND 1.634 INCHES MAXIMUM |
| THSD |
THREAD SERIES DESIGNATOR |
UNJF |
| AAUR |
GRIP DIAMETER |
0.2483 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM |
| CQBC |
MINIMUM TENSILE STRENGTH |
160000 POUNDS PER SQUARE INCH |
| AAJD |
THREAD CLASS |
3A |
| ZZZK |
SPECIFICATION/STANDARD DATA |
80205-NAS334 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
| CMLP |
THREAD QUANTITY PER INCH |
28 |
| MATT |
MATERIAL |
STEEL COMP 4140 OVERALL OR STEEL COMP 8735 OVERALL OR STEEL COMP E4340 OVERALL OR STEEL COMP 8740 OVERALL OR STEEL COMP 6150 OVERALL |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| ABQZ |
INTERNAL DRIVE STYLE |
CROSS RECESS TYPE II |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| CQFM |
HARDNESS RATING |
36.0 ROCKWELL C MINIMUM OVERALL AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| AASK |
HEAD STYLE |
FLAT COUNTERSUNK |
| CRSQ |
COUNTERSINK ANGLE |
99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| AASA |
THREAD LENGTH |
0.443 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
| AAWU |
SINGLE SHEAR STRENGTH |
4650 POUNDS PER SQUARE INCH |
| AAWB |
SHANK UNTHREADED HOLE DIAMETER |
0.066 INCHES MINIMUM FIRST HOLE AND 0.086 INCHES MAXIMUM FIRST HOLE |
| AASB |
FASTENER LENGTH |
2.077 INCHES MINIMUM AND 2.124 INCHES MAXIMUM |
| SFTT |
SURFACE TREATMENT |
CADMIUM OVERALL AND CHROMATE OVERALL |
| CRZS |
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER |
1.926 INCHES MINIMUM FIRST HOLE AND 1.946 INCHES MAXIMUM FIRST HOLE |
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