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 |
|---|---|
| 04939 | LOCKHEED MARTIN CORPORATION DBA LOCK |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AHYM | NOMINAL THREAD DIAMETER | 0.086 INCHES |
| CWYB | SHOULDER SHAPE | ROUND ALL SHOULDERS |
| ABQZ | INTERNAL DRIVE STYLE | SLOT |
| MATT | MATERIAL | STEEL COMP 630 OVERALL |
| AATX | SHOULDER LENGTH | 0.025 INCHES MINIMUM SECOND SHOULDER AND 0.030 INCHES MAXIMUM SECOND SHOULDER |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| AATX | SHOULDER LENGTH | 0.064 INCHES MINIMUM FIRST SHOULDER AND 0.067 INCHES MAXIMUM FIRST SHOULDER |
| FEAT | SPECIAL FEATURES | RELIEF 0.180-0.182 IN. LG; 0.074-0.076 IN. DIA |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASU | HEAD HEIGHT | 0.086 INCHES NOMINAL |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| AAJD | THREAD CLASS | 2A |
| AASK | HEAD STYLE | HEXAGON |
| AASA | THREAD LENGTH | 0.327 INCHES MINIMUM AND 0.362 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 56 |
| AATN | SHOULDER DIAMETER | 0.094 INCHES NOMINAL ALL SHOULDERS |
| AATB | WIDTH BETWEEN FLATS | 0.177 INCHES MINIMUM AND 0.187 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 0.357 INCHES MINIMUM AND 0.387 INCHES MAXIMUM |