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National Stock Number:
5305-01-240-0859
Federal Supply Class:
5305
National Item Identification Number:
012400859
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:
| HT4020-6-8AX | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4020-6-8AX | 17446 | HUCK INTERNATIONAL, INC | | HT4020-6-8AX | 73197 | HI-SHEAR CORPORATION | | HT4020-6-8AX | 80539 | SPS TECHNOLOGIES, LLC | | HT4020-6-8AX | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4020-6-8AX | 97928 | HUCK INTL INC | | ST3M653C6-8A | 76301 | THE BOEING COMPANY | | ST3M653C6-8A | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4020-6-8AX | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.5 DEGREES MINIMUM AND 100.5 DEGREES MAXIMUM | | FASTENER LENGTH | 1.125 INCHES MINIMUM AND 1.172 INCHES MAXIMUM | | HEAD DIAMETER | 0.755 INCHES MINIMUM AND 0.760 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | SHOULDER DIAMETER | 0.3896 INCHES MINIMUM AND 0.3901 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SHOULDER LENGTH | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM FIRST SHOULDER | | SPECIAL FEATURES | SUPPLY WITH O RING PER ST7M251 | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.615 INCHES MINIMUM AND 0.682 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 24 |
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