5305-01-390-3853, SCREW,SHOULDER

National Stock Number:
5305-01-390-3853

Federal Supply Class:
5305

National Item Identification Number:
013903853

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.

Manufacturer Information:

MIL-S-21472	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
MS51575-17	96906	MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

Techincal Specification:

THREAD SERIES DESIGNATOR	UNF
NOMINAL THREAD DIAMETER	0.190 INCHES
THREAD QUANTITY PER INCH	32
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.2188 INCHES MINIMUM AND
	0.2812 INCHES MAXIMUM
FASTENER LENGTH	0.4395 INCHES NOMINAL
MATERIAL	STEEL COMP 303 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A582 COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 TY 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HEAD STYLE	FLAT CHAMFER
HEAD DIAMETER	0.3438 INCHES MINIMUM AND
	0.4062 INCHES MAXIMUM
HEAD HEIGHT	0.1563 INCHES MINIMUM AND
	0.2187 INCHES MAXIMUM
INTERNAL DRIVE STYLE	SLOT
SHOULDER SHAPE	ROUND FIRST SHOULDER
SHOULDER DIAMETER	0.2485 INCHES MINIMUM AND
	0.2495 INCHES MAXIMUM FIRST SHOULDER
SHOULDER LENGTH	0.188 INCHES MINIMUM AND
	0.191 INCHES MAXIMUM FIRST SHOULDER
SPECIAL FEATURES	SCREWS SHALL BE NECKED UNDER SHOULDER. SCREWS MAY BE NECKED UNDER HEAD.
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE	81349
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	MIL-S-21472
MANUFACTURERS CODE	96906
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	MS51575-17

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