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National Stock Number:
5305-01-577-0528
Federal Supply Class:
5305
National Item Identification Number:
015770528
Description:
SCREW,MACHINE
Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter, No 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below No. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, CLEVIS; BOLT, EXTERNALLY RELIEVED BODY; SCREW, EXTERNALLY RELIEVED BODY; and SCREW, ASSEMBLED WASHER. See also, SCREW, INSTRUMENT; BOLT, MACHINE; BOLT, INTERNAL WRENCHING; and SCREW, CAP SOCKET HEAD.
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Manufacturer Information:
| 23-11228 | 64678 | DAIMLER TRUCK NORTH AMERICA LLC | | 23-12279-712 | 64678 | DAIMLER TRUCK NORTH AMERICA LLC |
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Techincal Specification:
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW MACHINE-FLAT HEAD TORX OR CROSS RECESS | | PROPRIETARY CHARACTERISTICS | PACS | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SCREW MATERIAL | STEEL COMP 1010 OR STEEL COMP 1020 | | SCREW SURFACE TREATMENT | PHOSPHATE AND OIL | | SHANK SURFACE TREATMENT | PHOSPHATE AND OIL | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 1.250 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNC | | BEARING SURFACE OF HEAD SURFACE TREATMENT | PHOSPHATE AND OIL | | FASTENER LENGTH | 1.690 INCHES NOMINAL | | HARDNESS RATING | 70.0 ROCKWELL B MINIMUM AND 100.0 ROCKWELL B MAXIMUM | | HEAD DIAMETER | 0.480 INCHES NOMINAL | | HEAD STYLE | FLAT COUNTERSUNK | | HEAD SURFACE TREATMENT | PHOSPHATE AND OIL | | INTERNAL DRIVE STYLE | TORX |
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