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National Stock Number: 5305-00-998-1745
Federal Supply Class: 5305
National Item Identification Number: 009981745
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:
MS27039-4-36 | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE | MS27039-4-36 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
FASTENER LENGTH | 2.266 INCHES MINIMUM AND 2.313 INCHES MAXIMUM | HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM | HEAD DIAMETER | 0.473 INCHES MINIMUM AND 0.492 INCHES MAXIMUM | HEAD HEIGHT | 0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM | HEAD STYLE | PAN NO. 2 | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH | NOMINAL THREAD DIAMETER | 0.250 INCHES | SCREW MATERIAL | STEEL COMP 4037 OR STEEL COMP 8630 | SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES | SCREW SURFACE TREATMENT | CADMIUM AND CHROMATE | THREAD CLASS | 3A | THREAD DIRECTION | RIGHT-HAND | THREAD LENGTH | 0.501 INCHES MINIMUM AND 0.578 INCHES MAXIMUM | THREAD SERIES DESIGNATOR | UNF | THREAD QUANTITY PER INCH | 28 |
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