Recently Updated NSN 5305-01-390-3853 Or (5305013903853) Part List

Item Name	Screw Shoulder
Federal Supply Group (FSG)	Hardware and Abrasives
Federal Supply Class (FSC)	5305 Screws
National Item Identification Number (NIIN)	01-390-3853 (013903853)
NCB Code	USA (01)
Manufacturer	Military Standards Corp, Military Specifications

Part Number	Manufacturer	Item Name	RFQ
MS51575-17	military standards corp	screw shoulder	RFQ
MIL-S-21472	military specifications	screw shoulder	RFQ

MRC	Criteria	Characteristic
AAJF	THREAD DIRECTION	RIGHT-HAND
AHYM	NOMINAL THREAD DIAMETER	0.190 INCHES
MATT	MATERIAL	STEEL COMP 303 OVERALL
MDCL	MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A582 COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SFTT	SURFACE TREATMENT	PASSIVATE OVERALL
STDC	SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 TY 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THSD	THREAD SERIES DESIGNATOR	UNF
AAJD	THREAD CLASS	2A
AATX	SHOULDER LENGTH	0.188 INCHES MINIMUM FIRST SHOULDER AND 0.191 INCHES MAXIMUM FIRST SHOULDER
CMLP	THREAD QUANTITY PER INCH	32
CWYB	SHOULDER SHAPE	ROUND FIRST SHOULDER
AASA	THREAD LENGTH	0.2188 INCHES MINIMUM AND 0.2812 INCHES MAXIMUM
AASB	FASTENER LENGTH	0.4395 INCHES NOMINAL
AASK	HEAD STYLE	FLAT CHAMFER
AASL	HEAD DIAMETER	0.3438 INCHES MINIMUM AND 0.4062 INCHES MAXIMUM
AASU	HEAD HEIGHT	0.1563 INCHES MINIMUM AND 0.2187 INCHES MAXIMUM
AATN	SHOULDER DIAMETER	0.2485 INCHES MINIMUM FIRST SHOULDER AND 0.2495 INCHES MAXIMUM FIRST SHOULDER
ABQZ	INTERNAL DRIVE STYLE	SLOT
FEAT	SPECIAL FEATURES	SCREWS SHALL BE NECKED UNDER SHOULDER. SCREWS MAY BE NECKED UNDER HEAD.