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National Stock Number:
5305-00-167-3635
Federal Supply Class:
5305
National Item Identification Number:
001673635
Description:
SCREW,MACHINE
Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter, No 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below No. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, CLEVIS; BOLT, EXTERNALLY RELIEVED BODY; SCREW, EXTERNALLY RELIEVED BODY; and SCREW, ASSEMBLED WASHER. See also, SCREW, INSTRUMENT; BOLT, MACHINE; BOLT, INTERNAL WRENCHING; and SCREW, CAP SOCKET HEAD.
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Manufacturer Information:
| 276-107B | 99167 | HAMILTON SUNDSTRAND CORPORATION | | AC525-416-12 | 88041 | AIR CORPS STANDARDS UNDER CUSTODIANISHIP OF THE AIR FORCE | | AN525-416-12 | 88044 | AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE |
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Techincal Specification:
| EXTENDED WASHER DIAMETER | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.028 INCHES MINIMUM AND 0.033 INCHES MAXIMUM | | FASTENER LENGTH | 0.719 INCHES MINIMUM AND 0.781 INCHES MAXIMUM | | HEAD DIAMETER | 0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM | | HEAD HEIGHT | 0.096 INCHES MINIMUM AND 0.106 INCHES MAXIMUM | | HEAD STYLE | ROUND EXTENDED WASHER | | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 | | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SCREW MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6050 MIL SPEC 1ST MATERIAL RESPONSE OR AMS 6300 ASSN STD 2ND MATERIAL RESPONSE | | SCREW MATERIAL | STEEL COMP 8630 OR STEEL COMP 4037 | | SCREW SURFACE TREATMENT | CADMIUM OR ZINC | | SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE | | THREAD LENGTH | 0.289 INCHES MINIMUM AND 0.453 INCHES MAXIMUM | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD SERIES DESIGNATOR | UNF | | THREAD QUANTITY PER INCH | 28 |
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