5998-01-482-7978 CIRCUIT CARD ASSEMBLY Index 5998-01-482-7980 CIRCUIT CARD ASSEMBLY

National Stock Number:
5305-01-482-7979

Federal Supply Class:
5305

National Item Identification Number:
014827979

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:
3M1238-4-876301THE BOEING COMPANY
CA2254-4-829372HOWMET GLOBAL FASTENING SYSTEMS INC.


Techincal Specification:
FASTENER LENGTH0.910 INCHES MINIMUM AND 0.940 INCHES MAXIMUM
HEAD HEIGHT0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM
HEAD STYLEHEXAGON
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
PROPRIETARY CHARACTERISTICSPACS
NOMINAL THREAD DIAMETER0.2500 INCHES
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONAMS5731 ASSN STD 1ST MATERIAL RESPONSE OR AMS5737 ASSN STD 2ND MATERIAL RESPONSE
SCREW MATERIALIRON ALLOY 660
SCREW SURFACE TREATMENTPASSIVATE
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE
SPECIAL FEATURESTECH DATA NOT AUTHORIZED TO BE RELEASED OUTSIDE OF THE U.S.; SCREW HAS A KEY WAY
WIDTH BETWEEN FLATS0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.425 INCHES NOMINAL
THREAD QUANTITY PER INCH28
THREAD SERIES DESIGNATORUNJF


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