Recently Updated NSN 5305-01-186-7147 Or (5305011867147) Part List

Item Name	Screw Close Tolerance
Federal Supply Group (FSG)	Hardware and Abrasives
Federal Supply Class (FSC)	5305 Screws
National Item Identification Number (NIIN)	01-186-7147 (011867147)
NCB Code	USA (01)
Manufacturer	National Aerospace Standards Com

Part Number	Manufacturer	Item Name	RFQ
NAS1581C4R3	national aerospace standards com	screw close tolerance	RFQ

MRC	Criteria	Characteristic
AAJD	THREAD CLASS	3A
AAJF	THREAD DIRECTION	RIGHT-HAND
AASA	THREAD LENGTH	0.378 INCHES MINIMUM AND 0.428 INCHES MAXIMUM
AASB	FASTENER LENGTH	0.575 INCHES MINIMUM AND 0.605 INCHES MAXIMUM
AASK	HEAD STYLE	FLAT COUNTERSUNK
AASL	HEAD DIAMETER	0.3504 INCHES MINIMUM AND 0.3988 INCHES MAXIMUM
AAUR	GRIP DIAMETER	0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM
ABQZ	INTERNAL DRIVE STYLE	OFFSET CRUCIFORM (TORQUE SET)
AHYM	NOMINAL THREAD DIAMETER	0.250 INCHES
ANEE	GRIP LENGTH	0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM
CMLP	THREAD QUANTITY PER INCH	28
CQBC	MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH
CQFM	HARDNESS RATING	24.0 ROCKWELL C MINIMUM OVERALL AND 35.0 ROCKWELL C MAXIMUM OVERALL
CRSQ	COUNTERSINK ANGLE	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
CSYM	SURFACE FINISH	32.0 MICROINCHES GRIP
CSYM	SURFACE FINISH	32.0 MICROINCHES THREADS
FEAT	SPECIAL FEATURES	INTERNAL DRIVE RIBBED
MATT	MATERIAL	IRON ALLOY 660 OVERALL
MDCL	MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE 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	UNJF
ZZZK	SPECIFICATION/STANDARD DATA	80205-NAS1581 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD