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National Stock Number:
5305-00-172-6806
Federal Supply Class:
5305
National Item Identification Number:
001726806
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:
| 6823456 | 24617 | GENERAL MOTORS CORP | | 6823456 | 73342 | ALLISON TRANSMISSION INC | | 6876743 | 63005 | ROLLS-ROYCE CORPORATION | | 6876743 | 73342 | ALLISON TRANSMISSION INC |
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Techincal Specification:
| FASTENER LENGTH | 3.026 INCHES MINIMUM AND 3.036 INCHES MAXIMUM | | HEAD DIAMETER | 1.250 INCHES NOMINAL | | HEAD HEIGHT | 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM | | HEAD STYLE | FLAT CHAMFER | | INTERNAL DRIVE STYLE | HEXAGON | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | SHOULDER LENGTH | 2.461 INCHES MINIMUM AND 2.464 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SPECIAL FEATURES | PORTION OF SHOULDER REDUCED 0.620 IN. DIA BY 1.060 IN. W | | WIDTH ACROSS FLATS | 0.376 INCHES MINIMUM AND 0.379 INCHES MAXIMUM | | THREAD CLASS | 3A | | THREAD LENGTH | 0.565 INCHES MINIMUM AND 0.572 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNF |
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