Part Number
Definition:
AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER, NO 0 (0.060 IN.) (1.5 MM) OR LARGER. IT HAS A ROUND UNTHREADED NECK OR SHANK ALL OR PART OF WHICH IS OF GREATER DIAMETER THAN THE THREADED PORTION. THE HEAD IS DESIGNED TO BE DRIVEN WITH EITHER A WRENCH OR AN INSERTED DRIVER OR BOTH IN SIZES BELOW NO. 10 (0.190 IN.) (5 MM) NOMINAL DIAMETER. NO. 10 (0.190 IN.) (5 MM) AND LARGER SIZES MUST BE DESIGNED FOR ANY TYPE OF INSERTED DRIVER, BUT MAY ALSO PROVIDE FOR EXTERNAL WRENCHING OF THE HEAD. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. FOR ITEMS WHICH ARE BOTH SHOULDERED AND HAVE AN EXTERNALLY RELIEVED BODY, USE SCREW, EXTERNALLY RELIEVED BODY. FOR ITEMS WITH A NO. 10 (0.190 IN.) (5 MM) OR LARGER THREAD DIAMETER WITHOUT AN INSERTED DRIVER HEAD, USE BOLT, SHOULDER. EXCLUDES BOLT, INTERNAL WRENCHING AND SCREW, CAP, SOCKET HEAD.
CAGE Information
| Code | Company |
|---|---|
| 28972 | FASTENER ENGINEERING CORP |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| CRSQ | COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL |
| AATN | SHOULDER DIAMETER | 0.141 INCHES MINIMUM FIRST SHOULDER AND 0.143 INCHES MAXIMUM FIRST SHOULDER |
| ABQZ | INTERNAL DRIVE STYLE | SLOT |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SFTT | SURFACE TREATMENT | PAINT HEAD |
| AASA | THREAD LENGTH | 0.136 INCHES MINIMUM AND 0.198 INCHES MAXIMUM |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| FEAT | SPECIAL FEATURES | TOP OF HEAD PAINTED YELLOW |
| AASK | HEAD STYLE | FLAT COUNTERSUNK |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| AAJD | THREAD CLASS | 2A |
| MATT | MATERIAL | STEEL COMP 4037 OVERALL |
| AASL | HEAD DIAMETER | 0.223 INCHES NOMINAL |
| AATX | SHOULDER LENGTH | 0.185 INCHES MINIMUM FIRST SHOULDER AND 0.215 INCHES MAXIMUM FIRST SHOULDER |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| CMLP | THREAD QUANTITY PER INCH | 32 |
| AHYM | NOMINAL THREAD DIAMETER | 0.138 INCHES |
| CQFM | HARDNESS RATING | 33.0 ROCKWELL C NOMINAL OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL |
| AASB | FASTENER LENGTH | 0.453 INCHES MINIMUM AND 0.485 INCHES MAXIMUM |