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 |
| 06725 |
SPS TECHNOLOGIES LLC DBA AIR INDUSTR |
| 0PTK6 |
SPS TECHNOLOGIES INC |
| L4528 |
LISI AEROSPACE CANADA CORP |
| 0HDW7 |
HUCK INTERNATIONAL INC. DBA ALCOA FA |
| 06950 |
ALCOA GLOBAL FASTENERS INC. DBA ALCO |
| 1W025 |
NORTHROP GRUMMAN SYSTEMS CORPORATION |
| 73197 |
HI-SHEAR CORPORATION |
| 97928 |
HUCK INTL INC |
| 76823 |
NORTHROP GRUMMAN SYSTEMS CORPORATION |
| 17446 |
HUCK INTERNATIONAL INC. DBA ALCOA FA |
| 27624 |
PAUL R. BRILES INC. DBA PB FASTENERS |
| 16258 |
SPACELOK INC. |
| 80539 |
SPS TECHNOLOGIES LLC DBA AEROSPACE F |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC |
Requirements Statement |
Clear Text Reply |
| CSYM |
SURFACE FINISH |
32.0 MICROINCHES THREADS |
| CSYM |
SURFACE FINISH |
32.0 MICROINCHES GRIP |
| CRSQ |
COUNTERSINK ANGLE |
129.0 DEGREES MINIMUM AND 131.0 DEGREES MAXIMUM |
| MATT |
MATERIAL |
TITANIUM ALLOY UNS R56400 OVERALL |
| AASL |
HEAD DIAMETER |
0.5026 INCHES MINIMUM AND 0.5111 INCHES MAXIMUM |
| THSD |
THREAD SERIES DESIGNATOR |
UNJF |
| CSYM |
SURFACE FINISH |
32.0 MICROINCHES BEARING SURFACE OF HEAD |
| AAJD |
THREAD CLASS |
3A |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS 4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| CMLP |
THREAD QUANTITY PER INCH |
28 |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| SFTT |
SURFACE TREATMENT |
ALUMINUM OVERALL |
| AASK |
HEAD STYLE |
FLAT COUNTERSUNK |
| ANEE |
GRIP LENGTH |
0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
| AAUR |
GRIP DIAMETER |
0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM |
| ABQZ |
INTERNAL DRIVE STYLE |
OFFSET CRUCIFORM (TORQUE SET) |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
NAS 4006 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| AASA |
THREAD LENGTH |
0.403 INCHES NOMINAL |
| AASB |
FASTENER LENGTH |
0.888 INCHES MINIMUM AND 0.918 INCHES MAXIMUM |
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