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 |
|---|---|
| 98230 | NATIONAL SECURITY AGENCY |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AASK | HEAD STYLE | FLAT KEYED |
| CWYB | SHOULDER SHAPE | ROUND ALL SHOULDERS |
| ABQZ | INTERNAL DRIVE STYLE | TORQUE |
| AAST | KEY LENGTH | 0.250 INCHES NOMINAL |
| THSD | THREAD SERIES DESIGNATOR | UN |
| AATX | SHOULDER LENGTH | 0.062 INCHES NOMINAL ALL SHOULDERS |
| AASU | HEAD HEIGHT | 0.093 INCHES NOMINAL |
| CQFM | HARDNESS RATING | 40.0 ROCKWELL C NOMINAL OVERALL |
| MATT | MATERIAL | ALUMINUM ALLOY OVERALL |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASL | HEAD DIAMETER | 0.312 INCHES NOMINAL |
| AASB | FASTENER LENGTH | 0.500 INCHES NOMINAL |
| AATN | SHOULDER DIAMETER | 0.312 INCHES NOMINAL ALL SHOULDERS |
| CQHQ | MINIMUM YIELD STRENGTH | 160000 POUNDS PER SQUARE INCH |
| AASA | THREAD LENGTH | 0.250 INCHES NOMINAL |