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 |
| 06950 |
ALCOA GLOBAL FASTENERS INC. DBA ALCO |
| 26512 |
NORTHROP GRUMMAN SYSTEMS CORPORATION |
| 73197 |
HI-SHEAR CORPORATION |
| L4528 |
LISI AEROSPACE CANADA CORP |
| 80539 |
SPS TECHNOLOGIES LLC DBA AEROSPACE F |
| 27624 |
PAUL R. BRILES INC. DBA PB FASTENERS |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC |
Requirements Statement |
Clear Text Reply |
| CSYM |
SURFACE FINISH |
32.0 MICROINCHES THREADS |
| AHYM |
NOMINAL THREAD DIAMETER |
0.190 INCHES |
| CSYM |
SURFACE FINISH |
32.0 MICROINCHES GRIP |
| FEAT |
SPECIAL FEATURES |
DRIVE RIBBED |
| ANEE |
GRIP LENGTH |
0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM |
| THSD |
THREAD SERIES DESIGNATOR |
UNJF |
| AASL |
HEAD DIAMETER |
0.339 INCHES MINIMUM AND 0.381 INCHES MAXIMUM |
| AAJD |
THREAD CLASS |
3A |
| SFTT |
SURFACE TREATMENT |
CADMIUM OVERALL AND CADMIUM OVERALL OR CHROMATE OVERALL |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
AMS6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| AASA |
THREAD LENGTH |
0.308 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASK |
HEAD STYLE |
FLAT COUNTERSUNK |
| CQBC |
MINIMUM TENSILE STRENGTH |
220000 POUNDS PER SQUARE INCH |
| CRSQ |
COUNTERSINK ANGLE |
99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| AASB |
FASTENER LENGTH |
0.506 INCHES MINIMUM AND 0.553 INCHES MAXIMUM |
| AAUR |
GRIP DIAMETER |
0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM |
| MATT |
MATERIAL |
STEEL COMP H11 OVERALL |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
NAS672 ASSN STD 1ST TREATMENT RESPONSE OVERALL OR MIL-C-8837,TY2,CL2 MIL SPEC 2ND TREATMENT RESPONSE OVERALL |
| ABQZ |
INTERNAL DRIVE STYLE |
OFFSET CRUCIFORM (TORQUE SET) |
| CMLP |
THREAD QUANTITY PER INCH |
32 |
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