Recently Updated NSN 5305-00-637-8413 Or (5305006378413) 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)	00-637-8413 (006378413)
NCB Code	USA (00)
Manufacturer	Nylok Corporation, National Aerospace Standards Com, Military Specifications

Part Number	Manufacturer	Item Name	RFQ
NK509-10R7F	nylok corporation	screw cap socket head	RFQ
MILS7839	national aerospace standards com	screw cap socket head	RFQ
MILS7839	military specifications	screw cap socket head	RFQ

MRC	Criteria	Characteristic
AAJD	THREAD CLASS	3A
AAJF	THREAD DIRECTION	RIGHT-HAND
AASA	THREAD LENGTH	0.359 INCHES MINIMUM
AASB	FASTENER LENGTH	0.459 INCHES MINIMUM AND 0.479 INCHES MAXIMUM
AASK	HEAD STYLE	FLAT COUNTERSUNK
AASL	HEAD DIAMETER	0.371 INCHES MINIMUM AND 0.385 INCHES MAXIMUM
AAUM	LOCKING FEATURE	PELLET THREADS
ABQZ	INTERNAL DRIVE STYLE	CROSS RECESS TYPE 1
AHYM	NOMINAL THREAD DIAMETER	0.190 INCHES
CMLP	THREAD QUANTITY PER INCH	32
CQBC	MINIMUM TENSILE STRENGTH	125000 POUNDS PER SQUARE INCH
CQFM	HARDNESS RATING	26.0 ROCKWELL C MINIMUM OVERALL AND 32.0 ROCKWELL C MAXIMUM OVERALL
CRSQ	COUNTERSINK ANGLE	100.0 DEGREES NOMINAL
MATT	MATERIAL	STEEL COMP 8740 OVERALL OR STEEL COMP 8630 OVERALL OR STEEL COMP 8735 OVERALL OR STEEL COMP 4130 OVERALL OR STEEL COMP 4037 OVERALL
SFTT	SURFACE TREATMENT	CADMIUM OVERALL
THSD	THREAD SERIES DESIGNATOR	UNF