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National Stock Number:
5305-01-428-2139
Federal Supply Class:
5305
National Item Identification Number:
014282139
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:
| 121558-4-A7PX | 56878 | SPS TECHNOLOGIES, LLC | | 121558-4-A7PX | 80539 | SPS TECHNOLOGIES, LLC | | AIC985-4-7R | 06725 | SPS TECHNOLOGIES, LLC | | C7985-4-7R | 17446 | HUCK INTERNATIONAL, INC | | C7985-4-7R | 27624 | SPS TECHNOLOGIES LLC | | C7985-4-7R | 81755 | LOCKHEED MARTIN CORPORATION | | VT1694F4-7-R | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | SF117-4-712 | 0K6Z0 | SATURN FASTENERS INC | | H185-4-7R | 17446 | HUCK INTERNATIONAL, INC | | VT1694F4-7-R | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | H185-4-7R | 97928 | HUCK INTL INC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 28 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.332 INCHES MINIMUM AND | | 0.403 INCHES MAXIMUM | | FASTENER LENGTH | 0.826 INCHES MINIMUM AND | | 0.856 INCHES MAXIMUM | | MATERIAL | STEEL COMP H11 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | NAS 672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | HARDNESS RATING | 46.0 ROCKWELL C MINIMUM AND | | 50.0 ROCKWELL C MAXIMUM OVERALL | | MINIMUM TENSILE STRENGTH | 220000 POUNDS PER SQUARE INCH | | MINIMUM YIELD STRENGTH | 132000 POUNDS PER SQUARE INCH | | HEAD STYLE | FLAT COUNTERSUNK | | HEAD DIAMETER | 0.350 INCHES MINIMUM AND | | 0.399 INCHES MAXIMUM | | COUNTERSINK ANGLE | 99.0 DEGREES NOMINAL AND | | 101.0 DEGREES MAXIMUM | | INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SHOULDER DIAMETER | 0.2637 INCHES MINIMUM AND | | 0.2643 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER LENGTH | 0.428 INCHES MINIMUM AND | | 0.448 INCHES MAXIMUM FIRST SHOULDER |
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