Recently Updated NSN 5305-01-148-2651 Or (5305011482651) Part List

Item Name	Screw Shoulder
Federal Supply Group (FSG)	Hardware and Abrasives
Federal Supply Class (FSC)	5305 Screws
National Item Identification Number (NIIN)	01-148-2651 (011482651)
NCB Code	USA (01)
Manufacturer	Roller Bearing Company Of America, Westinghouse Electric Corp

Part Number	Manufacturer	Item Name	RFQ
4431	roller bearing company of america	screw shoulder	RFQ
906E033 ITEM 23	westinghouse electric corp	screw shoulder	RFQ
CAT-4431	westinghouse electric corp	screw shoulder	RFQ
938A813-15	westinghouse electric corp	screw shoulder	RFQ
906E033-23	westinghouse electric corp	screw shoulder	RFQ

MRC	Criteria	Characteristic
AAJD	THREAD CLASS	2A
AAJF	THREAD DIRECTION	RIGHT-HAND
AASA	THREAD LENGTH	0.250 INCHES NOMINAL
AASB	FASTENER LENGTH	0.750 INCHES MINIMUM AND 0.752 INCHES MAXIMUM
AASK	HEAD STYLE	FLAT CHAMFER
AASL	HEAD DIAMETER	0.375 INCHES NOMINAL
AASU	HEAD HEIGHT	0.188 INCHES NOMINAL
AATN	SHOULDER DIAMETER	0.249 INCHES MINIMUM FIRST SHOULDER AND 0.250 INCHES MAXIMUM FIRST SHOULDER
AATX	SHOULDER LENGTH	0.500 INCHES MINIMUM FIRST SHOULDER AND 0.502 INCHES MAXIMUM FIRST SHOULDER
ABQZ	INTERNAL DRIVE STYLE	HEXAGON
AHYM	NOMINAL THREAD DIAMETER	0.190 INCHES
ASDB	WIDTH ACROSS FLATS	0.125 INCHES NOMINAL
CMLP	THREAD QUANTITY PER INCH	32
CRTL	CRITICALITY CODE JUSTIFICATION	ZZZY
CWYB	SHOULDER SHAPE	ROUND FIRST SHOULDER
MATT	MATERIAL	STEEL COMP 303 OVERALL
SFTT	SURFACE TREATMENT	CHROMIUM OVERALL
SPCL	SPECIAL TEST FEATURES	SPECIAL QUALITY CONTROL TESTING
STDC	SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-C-320 CLASS 2B FED SPEC SINGLE TREATMENT RESPONSE OVERALL
TEST	TEST DATA DOCUMENT	81349-MIL-P-23199 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS,BROCHURES,ETC.,THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS,INDUSTRY DIRECTORIES,AND SIMILAR TRADE PUBLICATIONS,REFLECTI
THSD	THREAD SERIES DESIGNATOR	UNF
ZZZY	REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS	AS DIFFERENTIATED BY MATERIAL WHICH MUST CONFORM TO SHIPS PARTS CONTROL CENTER SPECIAL QUALITY CONTROL PROVISIONS AND CERTIFIED FREE FROM MERCURY CONTAMINATION