Recently Updated NSN 5305-01-255-3590 Or (5305012553590) 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)	01-255-3590 (012553590)
NCB Code	USA (01)
Manufacturer	Sps Technologies Inc, Boeing Company The, Usm Corp, Safety Socket Llc

Part Number	Manufacturer	Item Name	RFQ
3M991-4-7	sps technologies inc	screw cap socket head	RFQ
3M991-4-7	boeing company the	screw cap socket head	RFQ
3M991-4-7	usm corp	screw cap socket head	RFQ
3M991-4-7	safety socket llc	screw cap socket head	RFQ

MRC	Criteria	Characteristic
AAJD	THREAD CLASS	3A
AAJF	THREAD DIRECTION	RIGHT-HAND
AASA	THREAD LENGTH	0.390 INCHES MINIMUM AND 0.460 INCHES MAXIMUM
AASB	FASTENER LENGTH	0.838 INCHES MINIMUM AND 0.888 INCHES MAXIMUM
AASK	HEAD STYLE	FLAT CHAMFER
AASL	HEAD DIAMETER	0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM
AASU	HEAD HEIGHT	0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM
ABQZ	INTERNAL DRIVE STYLE	HEXAGON
AHYM	NOMINAL THREAD DIAMETER	0.250 INCHES
ASDB	WIDTH ACROSS FLATS	0.188 INCHES MINIMUM AND 0.190 INCHES MAXIMUM
CMLP	THREAD QUANTITY PER INCH	28
CQFM	HARDNESS RATING	38.0 ROCKWELL C MINIMUM OVERALL AND 45.0 ROCKWELL C MAXIMUM OVERALL
FEAT	SPECIAL FEATURES	OPTIONAL KNURLED HEAD
MATT	MATERIAL	STEEL OVERALL
SFTT	SURFACE TREATMENT	CADMIUM OVERALL AND CHROMATE OVERALL
STDC	SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THSD	THREAD SERIES DESIGNATOR	UNF