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National Stock Number:
5305-00-402-4736
Federal Supply Class:
5305
National Item Identification Number:
004024736
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:
| 7470-0288 | 18014 | AEROSPACE AMERICA INC |
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Techincal Specification:
| FASTENER LENGTH | 4.230 INCHES MINIMUM AND 4.250 INCHES MAXIMUM | | HEAD DIAMETER | 0.590 INCHES MINIMUM AND 0.650 INCHES MAXIMUM | | HEAD HEIGHT | 0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM | | HEAD STYLE | FLAT CHAMFER | | INTERNAL DRIVE STYLE | SLOT | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-7720,COMP 303S MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 303 OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SHOULDER DIAMETER | 0.410 INCHES MINIMUM AND 0.470 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER LENGTH | 0.730 INCHES MINIMUM AND 0.750 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.450 INCHES MINIMUM AND 0.510 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) | | THREAD QUANTITY PER INCH | 20 |
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