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National Stock Number:
5305-01-085-3883
Federal Supply Class:
5305
National Item Identification Number:
010853883
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.
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Manufacturer Information:
| 1444D223-1 | 56672 | SYN-TECH SYSTEM, INC. |
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Techincal Specification:
| FASTENER LENGTH | 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM | | HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL | | HEAD DIAMETER | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM | | HEAD HEIGHT | 0.080 INCHES MINIMUM AND 0.110 INCHES MAXIMUM | | HEAD STYLE | FLAT CHAMFER | | INTERNAL DRIVE STYLE | SLOT | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A331 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 4140 OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SURFACE TREATMENT | PAINT OVERALL | | SPECIAL FEATURES | UNDERCUT DIA BETWEEN SHOULDERS 0.505 IN.LG AND CONTAINING A SPHERICAL RADIUS 0.325 IN. DIA | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.188 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNF |
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