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National Stock Number:
5305-00-012-1887
Federal Supply Class:
5305
National Item Identification Number:
000121887
Description:
SCREW,CAP,HEXAGON HEAD
Detail:
An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, MACHINE; BOLT, EXTERNALLY RELIEVED BODY; BOLT, INTERNAL WRENCHING; and SCREW, CAP, SOCKET HEAD.
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Manufacturer Information:
| 1-4 20X3-4 | 35211 | LAUSON DIVISION OF TECUMSEH PRODUCTS CO | | 1000-812 | 63734 | KAITLIN CORP | | 101-2S4-3 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR | | 121887 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | | 121887 | 24617 | GENERAL MOTORS CORP | | 121887 | 7X677 | GENERAL MOTORS LLC | | 21740 | 24975 | PRESTOLITE ELECTRIC INC | | 21740 | 35510 | PRESTOLITE ELECTRIC INC | | 23MS35291-6 | 80045 | L3HARRIS CINCINNATI ELECTRONICS CORPORATION | | 400684 | 12027 | KLINE MANUFACTURING CO INC | | 900037-1 | 32537 | JOY GLOBAL UNDERGROUND MINING LLC | | 900037-1 | 83179 | JOY MFG CO AIR POWER GROUP MICHIGAN CITY PLANT | | D9485-26-26 | 91340 | MET-PRO CORPORATION | | FFS85 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC | | GM121887 | 24617 | GENERAL MOTORS CORP | | GM121887 | 7X677 | GENERAL MOTORS LLC | | S188C | 15434 | CUMMINS INC. | | SHC250SC6 | 80249 | BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. |
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Techincal Specification:
| FASTENER LENGTH | 0.750 INCHES NOMINAL | | HARDNESS RATING | 80.0 ROCKWELL B MINIMUM AND 100.0 ROCKWELL B MAXIMUM OVERALL | | HEAD HEIGHT | 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | SAE GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | MINIMUM TENSILE STRENGTH | 74000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | NONDEFINITIVE SPEC/STD DATA | 2 TYPE AND 10P STYLE AND 2 GRADE | | WIDTH BETWEEN FLATS | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM | | SURFACE FINISH | 125.0 MICROINCHES BEARING SURFACE OF HEAD | | SURFACE FINISH | 63.0 MICROINCHES THREADS | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OR ZINC OVERALL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.750 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNC |
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