5985-01-521-6879 COUPLER,DIRECTIONAL Index 3110-01-521-6881 CAM FOLLOWER,NEEDLE BEARING

National Stock Number:
5305-01-521-6880

Federal Supply Class:
5305

National Item Identification Number:
015216880

Description:
SCREW,SHOULDER

Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter, No 0 (0.060 IN.) (1.5 mm) or larger. It has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. The head is designed to be driven with either a wrench or an inserted driver or both in sizes below No. 10 (0.190 IN.) (5 mm) nominal diameter. No. 10 (0.190 IN.) (5 mm) and larger sizes must be designed for any type of inserted driver, but may also provide for external wrenching of the head. A locking feature may be incorporated in the design of the head or threads. For items which are both shouldered and have an externally relieved body, use SCREW, EXTERNALLY RELIEVED BODY. For items with a No. 10 (0.190 IN.) (5 mm) or larger thread diameter without an inserted driver head, use BOLT, SHOULDER. Excludes BOLT, INTERNAL WRENCHING and SCREW, CAP, SOCKET HEAD.


Manufacturer Information:
MS51576-3696906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
FASTENER LENGTH1.9658 INCHES MINIMUM AND 2.0342 INCHES MAXIMUM
HEAD DIAMETER0.5313 INCHES MINIMUM AND 0.5937 INCHES MAXIMUM
HEAD HEIGHT0.2188 INCHES MINIMUM AND 0.2812 INCHES MAXIMUM
HEAD STYLEFLAT CHAMFER
INTERNAL DRIVE STYLEHEXAGON
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582/582M ASSN STD 1ST MATERIAL RESPONSE OR ASTM A193 ASSN STD 2ND MATERIAL RESPONSE OVERALL
MATERIALSTEEL CORROSION RESISTING OVERALL
NOMINAL THREAD DIAMETER0.312 INCHES
SHOULDER DIAMETER0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM OVERALL
SHOULDER SHAPEROUND OVERALL
SHOULDER LENGTH1.497 INCHES MINIMUM AND 1.503 INCHES MAXIMUM OVERALL
WIDTH ACROSS FLATS0.1880 INCHES NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35, TYPE II ASSN STD 1ST TREATMENT RESPONSE OR QQ-P-35, TYPE VI OR VII ASSN STD 2ND TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.4688 INCHES MINIMUM AND 0.5312 INCHES MAXIMUM
THREAD QUANTITY PER INCH18
THREAD SERIES DESIGNATORUNC


Click here to Register for Free 30-day Trial