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 |
| L4528 |
LISI AEROSPACE CANADA CORP |
| 80539 |
SPS TECHNOLOGIES LLC DBA AEROSPACE F |
| 27624 |
PAUL R. BRILES INC. DBA PB FASTENERS |
| 26512 |
NORTHROP GRUMMAN SYSTEMS CORPORATION |
| 73197 |
HI-SHEAR CORPORATION |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC |
Requirements Statement |
Clear Text Reply |
| CSYM |
SURFACE FINISH |
32.0 MICROINCHES THREADS |
| CMLP |
THREAD QUANTITY PER INCH |
24 |
| CSYM |
SURFACE FINISH |
32.0 MICROINCHES GRIP |
| FEAT |
SPECIAL FEATURES |
DRIVE RIBBED |
| AAUR |
GRIP DIAMETER |
0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM |
| AASL |
HEAD DIAMETER |
0.578 INCHES MINIMUM AND 0.634 INCHES MAXIMUM |
| THSD |
THREAD SERIES DESIGNATOR |
UNJF |
| ANEE |
GRIP LENGTH |
0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM |
| CQBC |
MINIMUM TENSILE STRENGTH |
22000 POUNDS PER SQUARE INCH |
| 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 |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASB |
FASTENER LENGTH |
1.339 INCHES MINIMUM AND 1.386 INCHES MAXIMUM |
| AASK |
HEAD STYLE |
FLAT COUNTERSUNK |
| CRSQ |
COUNTERSINK ANGLE |
99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| AASA |
THREAD LENGTH |
0.454 INCHES MINIMUM AND 0.521 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) |
| AHYM |
NOMINAL THREAD DIAMETER |
0.312 INCHES |
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