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National Stock Number:
5305-01-573-1995
Federal Supply Class:
5305
National Item Identification Number:
015731995
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:
| 91802A540 | 3A054 | MCMASTER-CARR SUPPLY CO |
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Techincal Specification:
| FASTENER LENGTH | 0.750 INCHES NOMINAL | | HEAD DIAMETER | 0.477 INCHES NOMINAL | | HEAD HEIGHT | 0.232 INCHES NOMINAL | | HEAD STYLE | OVAL | | INTERNAL DRIVE STYLE | CROSS RECESS TYPE III | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | PART NAME ASSIGNED BY CONTROLLING AGENCY | 18-8 STAINLESS STEEL PHILLIPS OVAL HEAD MACHINE SCREW | | SCREW MATERIAL | STEEL COMP 302 AND STEEL | | SPECIAL FEATURES | USE A COUNTERSINK TO CREATE A RECESS. THE BODY DIAMETER OF YOUR COUNTERSINK SHOULD BE EQUAL TO OR LARGER THAN YOUR SCREWS HEAD DIA AND ITS INCLUDED ANGLE SHOULD MATCH YOUR SCREWS HEAD ANGLE. HEAD ANGLE IS 82 DEGREES | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.518 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
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