NSN 4820-00-439-9759, (4820004399759) Parts Inventory

Item Name	Seat Valve
Federal Supply Group (FSG)	Valves
Federal Supply Class (FSC)	4820 Valves Nonpowered
National Item Identification Number (NIIN)	00-439-9759 (004399759)
NCB Code	USA (00)
Manufacturer	Pratt And Whitney Canada Inc, United Technologies Corporation

Part Number	Manufacturer	Item Name	Cage Code	RFQ
17181P005	pratt and whitney canada inc	seat valve	00198	RFQ
17181P5	pratt and whitney canada inc	seat valve	00198	RFQ
17181P005	united technologies corporation	seat valve	77445	RFQ
17181P5	united technologies corporation	seat valve	77445	RFQ

MRC	Criteria	Characteristic
ABKK	FLANGE DIAMETER	2.637 INCHES MINIMUM AND 2.638 INCHES MAXIMUM
ADAR	BODY OUTSIDE DIAMETER	2.273 INCHES MINIMUM AND 2.277 INCHES MAXIMUM
ADAS	BODY INSIDE DIAMETER	2.182 INCHES MINIMUM AND 2.192 INCHES MAXIMUM
AJRF	FLANGE SEAT TO DISK END HEIGHT	0.436 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
AJRM	UNDER FLANGE HEIGHT	0.136 INCHES MINIMUM AND 0.144 INCHES MAXIMUM
AJSG	SEAT ANGLE IN DEG	45.000 NOMINAL
CQFM	HARDNESS RATING	90.0 ROCKWELL B MINIMUM BODY AND 105.0 ROCKWELL B MAXIMUM BODY
CQKM	SEATING SURFACE SHAPE	ANGULAR
MATT	MATERIAL	STEEL OVERALL
MDCL	MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5700 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
STYL	STYLE DESIGNATOR	PLAIN FLANGED
ZZZV	FSC APPLICATION DATA	ACFT ENG R1830