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National Stock Number:
5305-01-383-6844
Federal Supply Class:
5305
National Item Identification Number:
013836844
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:
| MS21301-29 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | THREAD QUANTITY PER INCH | 26 | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.605 INCHES MINIMUM AND | | 0.625 INCHES MAXIMUM | | FASTENER LENGTH | 2.110 INCHES MINIMUM AND | | 2.120 INCHES MAXIMUM | | MATERIAL | STEEL COMP 1212 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | HEAD STYLE | FLAT CHAMFER | | HEAD DIAMETER | 0.729 INCHES MINIMUM AND | | 0.750 INCHES MAXIMUM | | HEAD HEIGHT | 0.302 INCHES MINIMUM AND | | 0.312 INCHES MAXIMUM | | INTERNAL DRIVE STYLE | SIX SPLINE | | SPLINE MINOR DIAMETER | 0.250 INCHES NOMINAL | | SPLINE MAJOR DIAMETER | 0.281 INCHES NOMINAL | | SPLINE WIDTH | 0.048 INCHES NOMINAL | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SHOULDER DIAMETER | 0.496 INCHES MINIMUM AND | | 0.498 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER LENGTH | 1.500 INCHES NOMINAL FIRST SHOULDER | | SPEC/STD CONTROLLING DATA | | | MANUFACTURERS CODE | 96906 | | DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS21301-29 |
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