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National Stock Number:
5305-01-051-9628
Federal Supply Class:
5305
National Item Identification Number:
010519628
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:
| 12705-20F-56B | 56878 | SPS TECHNOLOGIES, LLC | | 12705-20F-56B | 80539 | SPS TECHNOLOGIES, LLC |
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Techincal Specification:
| FASTENER LENGTH | 4.727 INCHES MINIMUM AND 4.753 INCHES MAXIMUM | | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL | | HEAD DIAMETER | 1.723 INCHES MINIMUM AND 1.750 INCHES MAXIMUM | | HEAD HEIGHT | 0.741 INCHES MINIMUM AND 0.750 INCHES MAXIMUM | | HEAD STYLE | FLAT CHAMFER | | INTERNAL DRIVE STYLE | HEXAGON | | MATERIAL | STEEL OVERALL | | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.875 INCHES | | SHOULDER DIAMETER | 1.247 INCHES MINIMUM AND 1.248 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER LENGTH | 3.497 INCHES MINIMUM AND 3.503 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | WIDTH ACROSS FLATS | 0.625 INCHES NOMINAL | | SURFACE TREATMENT | OXIDE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 1.064 INCHES MINIMUM AND 1.250 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNF | | THREAD QUANTITY PER INCH | 14 |
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