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 |
| 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. |
| 30889 |
ERIKS SOUTHWEST INC DBA MONTCLAIR EN |
| 56878 |
SPS TECHNOLOGIES LLC DBA AEROSPACE D |
| 08938 |
AIR INDUSTRIES CO INC |
| 50568 |
APCOM INC |
| 82172 |
DURHAM AIRCRAFT SERVICE INC |
| 71563 |
COLLINS ENGINEERING CORP |
| 80205 |
NATIONAL AEROSPACE STANDARDS COMMITT |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC |
Requirements Statement |
Clear Text Reply |
| MATT |
MATERIAL |
STEEL COMP E4340 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 8740 OVERALL OR STEEL COMP 6150 OVERALL OR STEEL COMP 8735 OVERALL OR STEEL COMP 4037 OVERALL |
| THSD |
THREAD SERIES DESIGNATOR |
UNJC |
| FEAT |
SPECIAL FEATURES |
FLEET BALLISTIC MISSILE QUALITY AS IDENTIFIED BY QUALITY CONTROL NO. POSO911197 |
| CQBC |
MINIMUM TENSILE STRENGTH |
160000 POUNDS PER SQUARE INCH |
| AAJD |
THREAD CLASS |
3A |
| ZZZX |
DEPARTURE FROM CITED DESIGNATOR |
AS MODIFIED BY SPECIAL FEATURES |
| 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 |
| AHYM |
NOMINAL THREAD DIAMETER |
0.164 INCHES |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-416,TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| 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 |
| AASL |
HEAD DIAMETER |
0.280 INCHES MINIMUM AND 0.337 INCHES MAXIMUM |
| ANEE |
GRIP LENGTH |
1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM |
| SFTT |
SURFACE TREATMENT |
CADMIUM OVERALL AND CHROMATE OVERALL |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OVERALL OR MIL-S-8503 MIL SPEC 4TH MATERIAL RESPONSE OVERALL OR MIL-S-5626 MIL SPEC 5TH MATERIAL RESPONSE OVERALL OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OVERALL OR MIL-S-6098 MIL SPEC 3RD MATERIAL RESPONSE OVERALL OR AMS 6300 ASSN STD 6TH MATERIAL RESPONSE OVERALL |
| AASB |
FASTENER LENGTH |
1.386 INCHES MINIMUM AND 1.416 INCHES MAXIMUM |
| CMLP |
THREAD QUANTITY PER INCH |
32 |
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