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 |
| 17446 |
HUCK INTERNATIONAL INC. DBA ALCOA FA |
| 73197 |
HI-SHEAR CORPORATION |
| 56878 |
SPS TECHNOLOGIES LLC DBA AEROSPACE D |
| L4528 |
LISI AEROSPACE CANADA CORP |
| 92215 |
ALCOA GLOBAL FASTENERS INC. DBA ALCO |
| 98897 |
LOCKHEED MARTIN CORPORATION DBA LOCK |
| 80539 |
SPS TECHNOLOGIES LLC DBA AEROSPACE F |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC |
Requirements Statement |
Clear Text Reply |
| THSD |
THREAD SERIES DESIGNATOR |
UNJF |
| AASB |
FASTENER LENGTH |
1.363 INCHES MINIMUM AND 1.393 INCHES MAXIMUM |
| ANEE |
GRIP LENGTH |
1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM |
| AASA |
THREAD LENGTH |
0.291 INCHES MINIMUM AND 0.341 INCHES MAXIMUM |
| CRZS |
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER |
1.237 INCHES MINIMUM FIRST HOLE AND 1.287 INCHES MAXIMUM FIRST HOLE |
| CQBC |
MINIMUM TENSILE STRENGTH |
160000 POUNDS PER SQUARE INCH |
| AAJD |
THREAD CLASS |
3A |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
| AASL |
HEAD DIAMETER |
0.456 INCHES MINIMUM AND 0.508 INCHES MAXIMUM |
| CMLP |
THREAD QUANTITY PER INCH |
28 |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASK |
HEAD STYLE |
FLAT COUNTERSUNK |
| MATT |
MATERIAL |
IRON ALLOY 660 OVERALL |
| CRSQ |
COUNTERSINK ANGLE |
99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| AAUR |
GRIP DIAMETER |
0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM |
| ABQZ |
INTERNAL DRIVE STYLE |
HIGH-TORQUE |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| AAWB |
SHANK UNTHREADED HOLE DIAMETER |
0.076 INCHES MINIMUM FIRST HOLE AND 0.086 INCHES MAXIMUM FIRST HOLE |
| SFTT |
SURFACE TREATMENT |
PASSIVATE OVERALL |
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