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 |
| 1W025 |
NORTHROP GRUMMAN SYSTEMS CORPORATION |
| 56878 |
SPS TECHNOLOGIES LLC DBA AEROSPACE D |
| L4528 |
LISI AEROSPACE CANADA CORP |
| 73197 |
HI-SHEAR CORPORATION |
| 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 |
| AASB |
FASTENER LENGTH |
1.201 INCHES MINIMUM AND 1.231 INCHES MAXIMUM |
| ANEE |
GRIP LENGTH |
0.803 INCHES MINIMUM AND 0.823 INCHES MAXIMUM |
| CRSQ |
COUNTERSINK ANGLE |
129.0 DEGREES MINIMUM AND 131.0 DEGREES MAXIMUM |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
AMS 5844 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| THSD |
THREAD SERIES DESIGNATOR |
UNJF |
| FEAT |
SPECIAL FEATURES |
DRY FILM LUBRICANT--THREADS ONLY |
| AASL |
HEAD DIAMETER |
0.503 INCHES MINIMUM AND 0.511 INCHES MAXIMUM |
| AAJD |
THREAD CLASS |
3A |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
| CMLP |
THREAD QUANTITY PER INCH |
28 |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASK |
HEAD STYLE |
FLAT COUNTERSUNK |
| AAUR |
GRIP DIAMETER |
0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| ABQZ |
INTERNAL DRIVE STYLE |
OFFSET CRUCIFORM (TORQUE SET) |
| SFTT |
SURFACE TREATMENT |
PASSIVATE OVERALL |
| MATT |
MATERIAL |
COBALT COMP MP-35-N OVERALL |
| AASA |
THREAD LENGTH |
0.403 INCHES NOMINAL |
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