National Stock Number (NSN) 5305-01-067-3391 (5305010673391) Parts List

Item Name	Screw Cap Hexagon Head
Federal Supply Group (FSG)	Hardware and Abrasives
Federal Supply Class (FSC)	5305 Screws
National Item Identification Number (NIIN)	01-067-3391 (010673391)
NCB Code	USA (01)
Manufacturer	American National Standards, Federal Specifications, Military Standards Corp

Part Number	Manufacturer	Item Name	Cage Code	RFQ
B1821BH025C038D	american national standards	screw cap hexagon head	80204	RFQ
FF-S-85	federal specifications	screw cap hexagon head	81348	RFQ
MS18154-1	military standards corp	screw cap hexagon head	96906	RFQ

MRC	Criteria	Characteristic
AAJD	THREAD CLASS	2A
AAJF	THREAD DIRECTION	RIGHT-HAND
AASA	THREAD LENGTH	0.219 INCHES MINIMUM AND 0.375 INCHES MAXIMUM
AASB	FASTENER LENGTH	0.344 INCHES MINIMUM AND 0.375 INCHES MAXIMUM
AASK	HEAD STYLE	HEXAGON
AASU	HEAD HEIGHT	0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM
AATB	WIDTH BETWEEN FLATS	0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
AAUB	HOLE DIAMETER	0.062 INCHES NOMINAL
AHYM	NOMINAL THREAD DIAMETER	0.250 INCHES
ASXK	HOLE QUANTITY	1
BQDM	HOLE TYPE	DRILLED
CMLP	THREAD QUANTITY PER INCH	20
CQBC	MINIMUM TENSILE STRENGTH	150000 POUNDS PER SQUARE INCH
CQFM	HARDNESS RATING	32.0 ROCKWELL C MINIMUM OVERALL AND 38.0 ROCKWELL C MAXIMUM OVERALL
CRHC	HOLE CONFIGURATION STYLE	HEXAGON FLATS
CSYM	SURFACE FINISH	63.0 MICROINCHES THREADS
MATT	MATERIAL	STEEL OVERALL
MDCL	MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A354,GRADE BD ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SFTT	SURFACE TREATMENT	ZINC OVERALL AND CHROMATE OVERALL
STDC	SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	ASTM B633,TYPE 2 ASSN STD ALL TREATMENT RESPONSES OVERALL
THSD	THREAD SERIES DESIGNATOR	UNC