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National Stock Number:
5305-00-307-1473
Federal Supply Class:
5305
National Item Identification Number:
003071473
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:
| 3M51-5-25 | 76301 | THE BOEING COMPANY | | 54267-5-25 | 50394 | SPS TECHNOLOGIES INC UNBRAKO DIV | | HT404A5-25 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT51UA25 | 73197 | HI-SHEAR CORPORATION | | HT404A5-25 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT51UA25 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL | | FASTENER LENGTH | 2.077 INCHES MINIMUM AND 2.124 INCHES MAXIMUM | | HEAD HEIGHT | 0.081 INCHES MINIMUM AND 0.083 INCHES MAXIMUM | | HEAD DIAMETER | 0.628 INCHES MINIMUM AND 0.633 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK UNDERCUT | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL DOCUMENT AND CLASSIFICATION | 3-53,FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | SHOULDER DIAMETER | 0.327 INCHES MINIMUM AND 0.328 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SHOULDER LENGTH | 1.424 INCHES MINIMUM AND 1.446 INCHES MAXIMUM FIRST SHOULDER | | SPECIAL FEATURES | FURNISHED WITH O RING | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | 3-53 FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.505 INCHES MINIMUM AND 0.572 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNF | | THREAD QUANTITY PER INCH | 24 |
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