B490389 — BOLT,EXTERNALLY RELIEVED BODY

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

B490389: BOLT,EXTERNALLY RELIEVED BODY.

The BOLT,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, hole_type: DRILLED, head_style: DEE CHAMFER, head_height: 0.150 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 0.512 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-175-8765, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS

B490389

NSN: 5306-01-175-8765
FSC: 5306 — Bolts
CAGE: K0378 — ROLLS-ROYCE PLC DIV DEFENSE (EUROPE) (GBR)

SPECIFICATIONS

material	STEEL CORROSION RESISTING OVERALL
hole_type	DRILLED
head_style	DEE CHAMFER
head_height	0.150 INCHES NOMINAL IN
thread_class	3A A
head_diameter	0.512 INCHES NOMINAL IN
hole_diameter	0.669 INCHES MINIMUM AND 0.739 INCHES MAXIMUM IN
hole_quantity	1
thread_length	0.320 INCHES NOMINAL IN
fastener_length	1.150 INCHES NOMINAL IN
thread_direction	RIGHT-HAND
surface_treatment	CADMIUM OVERALL
NSN	5306-01-175-8765

COMPONENT DIAGRAM

KEY FEATURES

•

HEAD HEIGHT: 0.150 INCHES NOMINAL IN

•

FASTENER LENGTH: 1.150 INCHES NOMINAL IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: RSP 170 FSCM K0378 MFR REF SINGLE TREATMENT RESPONSE OVERALL

•

DISTANCE FROM CENTERLINE TO FLAT: 0.187 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN

•

THREAD LENGTH: 0.320 INCHES NOMINAL IN

•

HOLE CONFIGURATION STYLE: ROUND

•

MATERIAL DOCUMENT AND CLASSIFICATION: DTD 5066 FSCM K0378 MFR REF SINGLE MATERIAL RESPONSE OVERALL

•

FIRST DIAMETER FROM HEAD: 0.190 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN

TECHNICAL CHARACTERISTICS

HEAD HEIGHT	0.150 INCHES NOMINAL IN
FASTENER LENGTH	1.150 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	RSP 170 FSCM K0378 MFR REF SINGLE TREATMENT RESPONSE OVERALL
DISTANCE FROM CENTERLINE TO FLAT	0.187 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
THREAD LENGTH	0.320 INCHES NOMINAL IN
HOLE CONFIGURATION STYLE	ROUND
MATERIAL DOCUMENT AND CLASSIFICATION	DTD 5066 FSCM K0378 MFR REF SINGLE MATERIAL RESPONSE OVERALL
FIRST DIAMETER FROM HEAD	0.190 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.800 INCHES MINIMUM AND 0.830 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER	0.250 INCHES IN

OTHER ITEMS IN FSC 5306 — Bolts

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017

SUBSTITUTES & CROSS-REFERENCES 1

99-781-0380Reference document

Same NSN cross-reference

Reference document — Informative reference only

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is B490389?

B490389 is a BOLT,EXTERNALLY RELIEVED BODY.

What parts can replace B490389?

There is 1 known substitute for B490389: 99-781-0380. Substitute compatibility should be verified for your specific system.

What is the NSN for B490389?

B490389 is cataloged in the U.S. Government catalog under NSN 5306-01-175-8765. This indicates validated use in U.S. government and defense supply chains.

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B490389 — BOLT,EXTERNALLY RELIEVED BODY

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