Part Number
Part Number:
NSN:
NIIN:
Item Name:
SCREW , CAP , SOCKET HEAD
Definition:
AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER. THE HEAD HAS AN INTERNAL SOCKET OR MULTIPLE SPLINE FOR USE WITH AN INSERTED DRIVER. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. EXCLUDES ITEMS WITH BEVEL (CONICAL) HEADS. SEE BOLT, INTERNAL WRENCHING. EXCLUDES SCREW, SHOULDER; AND SCREW, MACHINE.
CAGE Information
| Code | Company |
|---|---|
| 18876 | U S ARMY AVIATION AND MISSILE COMMAN |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| ABQZ | INTERNAL DRIVE STYLE | SIX SPLINE |
| ZZZX | DEPARTURE FROM CITED DESIGNATOR | AS MOD BY SURFACE TREATMENT |
| CQBC | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| CQHQ | MINIMUM YIELD STRENGTH | 130000 POUNDS PER SQUARE INCH |
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASK | HEAD STYLE | FLAT CHAMFER |
| AHYM | NOMINAL THREAD DIAMETER | 0.112 INCHES |
| AASB | FASTENER LENGTH | 0.500 INCHES NOMINAL |
| MATT | MATERIAL | STEEL OVERALL |
| AASA | THREAD LENGTH | 0.500 INCHES MINIMUM |
| AAUK | SPLINE WIDTH | 0.021 INCHES NOMINAL |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | 3 TYPE |
| CQFM | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM OVERALL AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| AASU | HEAD HEIGHT | 0.109 INCHES MINIMUM AND 0.112 INCHES MAXIMUM |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| AAUJ | SPLINE MAJOR DIAMETER | 0.098 INCHES NOMINAL |
| AAUH | SPLINE MINOR DIAMETER | 0.080 INCHES NOMINAL |
| AASL | HEAD DIAMETER | 0.178 INCHES MINIMUM AND 0.183 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 40 |