5305-00-167-3636 SCREW,MACHINE Index 4820-00-167-3638 VALVE,CHECK

National Stock Number:
5305-00-167-3637

Federal Supply Class:
5305

National Item Identification Number:
001673637

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.


Manufacturer Information:
125-2525-4305606GENERAL DYNAMICS-OTS, INC.
125C2525-4305606GENERAL DYNAMICS-OTS, INC.
AAS2525-4328977ACCURATE PRECISION FASTENER CORP.
AN525-416-1680205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE
AN525-416-1688044AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE


Techincal Specification:
EXTENDED WASHER DIAMETER0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM
EXTENDED WASHER THICKNESS0.028 INCHES MINIMUM AND 0.033 INCHES MAXIMUM
FASTENER LENGTH0.969 INCHES MINIMUM AND 1.031 INCHES MAXIMUM
HEAD DIAMETER0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM
HEAD HEIGHT0.096 INCHES MINIMUM AND 0.106 INCHES MAXIMUM
HEAD STYLEROUND EXTENDED WASHER
INTERNAL DRIVE STYLESLOT
MINIMUM TENSILE STRENGTH125000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.250 INCHES
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6050 MIL SPEC 1ST MATERIAL RESPONSE OR AMS 6300 ASSN STD 2ND MATERIAL RESPONSE
SCREW MATERIALSTEEL COMP 8630 OR STEEL COMP 4037
SCREW SURFACE TREATMENTCADMIUM OR ZINC
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE
THREAD LENGTH0.289 INCHES MINIMUM AND 0.453 INCHES MAXIMUM
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD SERIES DESIGNATORUNF
THREAD QUANTITY PER INCH28


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