5305-01-370-6956 SCREW,SHOULDER Index 5305-01-370-6958 SCREW,TAPPING

National Stock Number:
5305-01-370-6957

Federal Supply Class:
5305

National Item Identification Number:
013706957

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:
0802474445H-K CONNECTICUT HOLDING COMPANY
2067651275ANRITSU INSTRUMENTS COMPANY DIV MBU


Techincal Specification:
COLORBLACK OVERALL
FASTENER LENGTH1.433 INCHES MINIMUM AND 1.443 INCHES MAXIMUM
HEAD DIAMETER0.419 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
HEAD HEIGHT0.209 INCHES MINIMUM AND 0.219 INCHES MAXIMUM
HEAD STYLEFLAT CHAMFER
INTERNAL DRIVE STYLEHEXAGON
MATERIALSTEEL OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES
SHOULDER LENGTH0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM FIRST SHOULDER
SHOULDER SHAPEROUND FIRST SHOULDER
SPECIAL FEATURES0.100 IN WIDE UNDERCUT FOR THREAD RELIEF,0.182 IN MIN DIA,0.193 IN MAX DIA
SHOULDER DIAMETER0.308 INCHES MINIMUM AND 0.310 INCHES MAXIMUM FIRST SHOULDER
WIDTH ACROSS FLATS0.156 INCHES NOMINAL
SURFACE TREATMENTOXIDE OVERALL
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.338 INCHES NOMINAL
THREAD SERIES DESIGNATORUNRC
THREAD QUANTITY PER INCH20


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