Item # NAS1581F4T6, Flush Reduced Head Bolt - NAS1581F4T6 On Monroe Aerospace

Request Information

Flush Reduced Head Bolt - Length: 0.778", Thread: 1/4-28, Shear 100°, Flush Reduced Head Bolt, Alloy Steel, Offset Cruciform

Detail	Characteristic
COUNTERSINK ANGLE	100.0 DEGREES NOMINAL
FASTENER LENGTH	0.763 INCHES MINIMUM AND 0.793 INCHES MAXIMUM
GRIP DIAMETER	0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM
GRIP LENGTH	0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM
HARDNESS RATING	36.0 ROCKWELL C MINIMUM OVERALL AND 40.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER	0.350 INCHES MINIMUM AND 0.399 INCHES MAXIMUM
HEAD STYLE	FLAT COUNTERSUNK
INTERNAL DRIVE STYLE	OFFSET CRUCIFORM (TORQUE SET)
MATERIAL	STEEL COMP E4340 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 8740 OVERALL OR STEEL COMP 8735 OVERALL OR STEEL COMP 6150 OVERALL
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.250 INCHES
SURFACE FINISH	32.0 MICROINCHES GRIP
SURFACE FINISH	32.0 MICROINCHES THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416 TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM OVERALL AND CHROMATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.378 INCHES MINIMUM AND 0.428 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	UNJF
THREAD QUANTITY PER INCH	28
SPECIFICATION/STANDARD DATA	80205-NAS1581 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD

Welcome Back
Winback Offer

Unit of Measure

Inventory	N/A {1473}
Estimated Ship Date	N/A Ships in 1 Business Day
Inventory Note	N/A Need additional stock? Call (877) 920-1876 or email
Weight	N/A 0.01 lb
NSN	N/A 5305-01-056-3204
NIIN	N/A 01-056-3204
Part # Unpunctuated	N/A NAS1581F4T6
Minimum Order Note	N/A Minimum order is 25. Must order in increments of 1.
Country of Origin	N/A USA

Note	N/A Our inventory is extensive. The majority of the items listed in our catalog are stocked and available for immediate shipment.
California Residents	N/A Prop 65 Warning: This product may contain chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm.

Inventory