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National Stock Number:
5305-01-393-8515
Federal Supply Class:
5305
National Item Identification Number:
013938515
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:
| A31U17071-39 | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNF | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | THREAD QUANTITY PER INCH | 24 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.245 INCHES NOMINAL | | FASTENER LENGTH | 0.620 INCHES NOMINAL | | MATERIAL | STEEL COMP 4037 OR | | STEEL COMP 4137 OR | | STEEL COMP 4140 OR | | STEEL COMP 8630 OR | | STEEL COMP 8740 OVERALL | | SURFACE TREATMENT | CADMIUM AND | | CHROMATE OVERALL | | HEAD STYLE | FLAT CHAMFER | | HEAD DIAMETER | 0.357 INCHES MINIMUM AND | | 0.375 INCHES MAXIMUM | | HEAD HEIGHT | 0.177 INCHES MINIMUM AND | | 0.187 INCHES MAXIMUM | | INTERNAL DRIVE STYLE | HEXAGON | | WIDTH ACROSS FLATS | 0.125 INCHES NOMINAL | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SHOULDER DIAMETER | 0.246 INCHES MINIMUM AND | | 0.248 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER LENGTH | 0.370 INCHES MINIMUM AND | | 0.380 INCHES MAXIMUM FIRST SHOULDER |
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