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 |
| 04348 |
LAWRENCE ENGINEERING AND SUPPLY INC |
| 56878 |
SPS TECHNOLOGIES LLC DBA AEROSPACE D |
| 50568 |
APCOM INC |
| 80205 |
NATIONAL AEROSPACE STANDARDS COMMITT |
| 08938 |
AIR INDUSTRIES CO INC |
| 82172 |
DURHAM AIRCRAFT SERVICE INC |
| 71563 |
COLLINS ENGINEERING CORP |
| 30902 |
F AND C SALES INC |
| L4528 |
LISI AEROSPACE CANADA CORP |
| 73197 |
HI-SHEAR CORPORATION |
| 80539 |
SPS TECHNOLOGIES LLC DBA AEROSPACE F |
| 07851 |
NOR-CAL SUPPLY CO.INC. |
| C4293 |
ALCOA FASTENING SYSTEMS FAIRCHILD FA |
| 30889 |
ERIKS SOUTHWEST INC DBA MONTCLAIR EN |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC |
Requirements Statement |
Clear Text Reply |
| AHYM |
NOMINAL THREAD DIAMETER |
0.190 INCHES |
| AASB |
FASTENER LENGTH |
1.449 INCHES MINIMUM AND 1.479 INCHES MAXIMUM |
| AASL |
HEAD DIAMETER |
0.328 INCHES MINIMUM AND 0.385 INCHES MAXIMUM |
| THSD |
THREAD SERIES DESIGNATOR |
UNJF |
| CQBC |
MINIMUM TENSILE STRENGTH |
160000 POUNDS PER SQUARE INCH |
| AAJD |
THREAD CLASS |
3A |
| AASA |
THREAD LENGTH |
0.251 INCHES MINIMUM AND 0.301 INCHES MAXIMUM |
| ABQZ |
INTERNAL DRIVE STYLE |
CROSS RECESS TYPE 1 |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASK |
HEAD STYLE |
FLAT COUNTERSUNK |
| AAUR |
GRIP DIAMETER |
0.1625 INCHES MINIMUM AND 0.1635 INCHES MAXIMUM |
| CRSQ |
COUNTERSINK ANGLE |
99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| CQFM |
HARDNESS RATING |
36.0 ROCKWELL C MINIMUM OVERALL AND 42.0 ROCKWELL C MAXIMUM OVERALL |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OVERALL OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OVERALL OR MIL-S-6098 MIL SPEC 3RD MATERIAL RESPONSE OVERALL OR MIL-S-8503 MIL SPEC 4TH MATERIAL RESPONSE OVERALL OR MIL-S-5626 MIL SPEC 5TH MATERIAL RESPONSE OVERALL OR AMS 6300 ASSN STD 6TH MATERIAL RESPONSE OVERALL |
| ANEE |
GRIP LENGTH |
1.178 INCHES MINIMUM AND 1.198 INCHES MAXIMUM |
| MATT |
MATERIAL |
STEEL COMP 8735 OVERALL OR STEEL COMP E4340 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 8740 OVERALL OR STEEL COMP 6150 OVERALL OR STEEL COMP 4037 OVERALL |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| SFTT |
SURFACE TREATMENT |
CADMIUM OVERALL AND CHROMATE OVERALL |
| CMLP |
THREAD QUANTITY PER INCH |
32 |
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