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National Stock Number:
5305-01-158-2021
Federal Supply Class:
5305
National Item Identification Number:
011582021
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:
| 11609886 | 7X677 | GENERAL MOTORS LLC | | 20028567 | 11862 | GENERAL MOTORS CORP CHEVROLET MOTOR DIV SPECIAL PRODUCTS DEPT | | 20028567 | 7X677 | GENERAL MOTORS LLC |
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Techincal Specification:
| FASTENER LENGTH | 36.00 MILLIMETERS MINIMUM AND 37.00 MILLIMETERS MAXIMUM | | HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM | | HEAD DIAMETER | 21.2 MILLIMETERS MINIMUM AND 22.0 MILLIMETERS MAXIMUM | | HEAD HEIGHT | 6.3 MILLIMETERS MINIMUM AND 6.7 MILLIMETERS MAXIMUM | | HEAD STYLE | FLAT CHAMFER | | NOMINAL THREAD DIAMETER | 12.0 MILLIMETERS | | SCREW MATERIAL | STEEL COMP 4037 | | SCREW MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD SINGLE MATERIAL RESPONSE | | SCREW SURFACE TREATMENT | CADMIUM AND CHROMATE | | SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | GM 4341M CODE 20Z24,FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE | | SPECIAL FEATURES | LEAD THREADS HARDENED TO ROCKWELL C 45.0 MIN. FILE TEST PER SAE J-864 | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 33.2 MILLIMETERS MINIMUM AND 34.8 MILLIMETERS MAXIMUM | | THREAD SERIES DESIGNATOR | M | | THREAD PITCH IN MILLIMETERS | 1.75 |
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