Recently Updated NSN 5305-00-518-5731 Or (5305005185731) 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)	00-518-5731 (005185731)
NCB Code	USA (00)
Manufacturer	National Aerospace Standards Com, Military Standards Corp, Federal Specifications

Part Number	Manufacturer	Item Name	RFQ
MS21295-70	national aerospace standards com	screw cap socket head	RFQ
MS21295-70	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	0.875 INCHES MINIMUM
AASB	FASTENER LENGTH	1.485 INCHES MINIMUM AND 1.531 INCHES MAXIMUM
AASK	HEAD STYLE	FLAT CHAMFER
AASL	HEAD DIAMETER	0.262 INCHES MINIMUM AND 0.270 INCHES MAXIMUM
AASU	HEAD HEIGHT	0.159 INCHES MINIMUM AND 0.164 INCHES MAXIMUM
AAUM	LOCKING FEATURE	PATCH THREADS OR STRIP THREADS
ABQZ	INTERNAL DRIVE STYLE	HEXAGON
AHYM	NOMINAL THREAD DIAMETER	0.164 INCHES
ASDB	WIDTH ACROSS FLATS	0.141 INCHES MINIMUM AND 0.143 INCHES MAXIMUM
CMLP	THREAD QUANTITY PER INCH	32
CQBC	MINIMUM TENSILE STRENGTH	80000 POUNDS PER SQUARE INCH
CQFM	HARDNESS RATING	80.0 ROCKWELL B MINIMUM OVERALL
CQHQ	MINIMUM YIELD STRENGTH	30000 POUNDS PER SQUARE INCH
MATT	MATERIAL	STEEL COMP 302 OVERALL OR STEEL COMP 304 OVERALL OR STEEL COMP 305 OVERALL OR STEEL COMP 316 OVERALL OR STEEL COMP 384 OVERALL OR STEEL OVERALL
MDCL	MATERIAL DOCUMENT AND CLASSIFICATION	66 FED STD 1ST MATERIAL RESPONSE OVERALL OR 66 FED STD 2ND MATERIAL RESPONSE OVERALL OR 66 FED STD 3RD MATERIAL RESPONSE OVERALL OR 66 FED STD 4TH MATERIAL RESPONSE OVERALL OR 66 FED STD 5TH MATERIAL RESPONSE OVERALL OR ASTM-A493 AISI XM-7
SFTT	SURFACE TREATMENT	PASSIVATE OVERALL
STDC	SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THSD	THREAD SERIES DESIGNATOR	UNC
ZZZT	NONDEFINITIVE SPEC/STD DATA	6 TYPE