Recently Updated NSN 5305-00-143-1830 Or (5305001431830) Part List

Item Name	Screw Cap Socket Head
Federal Supply Group (FSG)	Hardware and Abrasives
Federal Supply Class (FSC)	5305 Screws
National Item Identification Number (NIIN)	00-143-1830 (001431830)
NCB Code	USA (00)
Manufacturer	Torkon Fastener Corp, National Aerospace Standards Com, Military Standards Corp, Federal Specifications

Part Number	Manufacturer	Item Name	RFQ
LK21295-25	torkon fastener corp	screw cap socket head	RFQ
MS21295-25	national aerospace standards com	screw cap socket head	RFQ
MS21295-25	military standards corp	screw cap socket head	RFQ
FFS86	federal specifications	screw cap socket head	RFQ

MRC	Criteria	Characteristic
AAJD	THREAD CLASS	3A
AAJF	THREAD DIRECTION	RIGHT-HAND
AASA	THREAD LENGTH	0.340 INCHES MINIMUM AND 0.453 INCHES MAXIMUM
AASB	FASTENER LENGTH	0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM
AASK	HEAD STYLE	FLAT CHAMFER
AASL	HEAD DIAMETER	0.550 INCHES MINIMUM AND 0.562 INCHES MAXIMUM
AASU	HEAD HEIGHT	0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM
ABQZ	INTERNAL DRIVE STYLE	HEXAGON
AHYM	NOMINAL THREAD DIAMETER	0.375 INCHES
ASDB	WIDTH ACROSS FLATS	0.313 INCHES MINIMUM AND 0.316 INCHES MAXIMUM
CMLP	THREAD QUANTITY PER INCH	24
CQBC	MINIMUM TENSILE STRENGTH	80000 POUNDS PER SQUARE INCH
CQFM	HARDNESS RATING	80.0 ROCKWELL B NOMINAL OVERALL
CQHQ	MINIMUM YIELD STRENGTH	30000 POUNDS PER SQUARE INCH
MATT	MATERIAL	STEEL COMP 302 OVERALL OR STEEL COMP 303 OVERALL OR STEEL COMP 304 OVERALL OR STEEL COMP 305 OVERALL OR STEEL COMP 316 OVERALL
MDCL	MATERIAL DOCUMENT AND CLASSIFICATION	66 FED STD ALL MATERIAL RESPONSES OVERALL
SFTT	SURFACE TREATMENT	PASSIVATE OVERALL
STDC	SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THSD	THREAD SERIES DESIGNATOR	UNF
ZZZT	NONDEFINITIVE SPEC/STD DATA	6 TYPE
ZZZX	DEPARTURE FROM CITED DESIGNATOR	AS MODIFIED BY SELF-LOCKING FEATURE