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571409-1 — BOLT,EXTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

571409-1: BOLT,EXTERNALLY RELIEVED BODY.

The BOLT,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL COMP XM-13 OVERALL, head_style: DOUBLE HEXAGON EXTENDED WASHER, head_height: 0.395 INCHES MINIMUM AND 0.415 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 1.260 INCHES MINIMUM AND 1.300 INCHES MAXIMUM IN, fastener_length: 8.420 INCHES MINIMUM AND 8.460 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-008-8987, 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
571409-1
NSN: 5306-00-008-8987
FSC: 5306 — Bolts
CAGE: 70210 — HONEYWELL INTERNATIONAL INC. DIV AEROSPACE - TORRANCE (USA)
SPECIFICATIONS
materialSTEEL COMP XM-13 OVERALL
head_styleDOUBLE HEXAGON EXTENDED WASHER
head_height0.395 INCHES MINIMUM AND 0.415 INCHES MAXIMUM IN
thread_class3A A
thread_length1.260 INCHES MINIMUM AND 1.300 INCHES MAXIMUM IN
fastener_length8.420 INCHES MINIMUM AND 8.460 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
width_between_flats0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
nominal_thread_diameter0.375 INCHES IN
extended_washer_diameter0.820 INCHES MINIMUM AND 0.840 INCHES MAXIMUM IN
fifth_diameter_from_head0.3736 INCHES MINIMUM AND 0.3740 INCHES MAXIMUM IN
first_diameter_from_head0.3736 INCHES MINIMUM AND 0.3740 INCHES MAXIMUM IN
NSN5306-00-008-8987
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 571409-1 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FOURTH DIAMETER FROM HEAD: 0.315 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
•
EXTENDED WASHER THICKNESS: 0.065 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIFTH DIAMETER: 7.120 INCHES MINIMUM AND 7.200 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.395 INCHES MINIMUM AND 0.415 INCHES MAXIMUM IN
•
FASTENER LENGTH: 8.420 INCHES MINIMUM AND 8.460 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 0.820 INCHES MINIMUM AND 0.840 INCHES MAXIMUM IN
•
THREAD LENGTH: 1.260 INCHES MINIMUM AND 1.300 INCHES MAXIMUM IN
•
FIRST DIAMETER FROM HEAD: 0.3736 INCHES MINIMUM AND 0.3740 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
FOURTH DIAMETER FROM HEAD0.315 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
EXTENDED WASHER THICKNESS0.065 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIFTH DIAMETER7.120 INCHES MINIMUM AND 7.200 INCHES MAXIMUM IN
HEAD HEIGHT0.395 INCHES MINIMUM AND 0.415 INCHES MAXIMUM IN
FASTENER LENGTH8.420 INCHES MINIMUM AND 8.460 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER0.820 INCHES MINIMUM AND 0.840 INCHES MAXIMUM IN
THREAD LENGTH1.260 INCHES MINIMUM AND 1.300 INCHES MAXIMUM IN
FIRST DIAMETER FROM HEAD0.3736 INCHES MINIMUM AND 0.3740 INCHES MAXIMUM IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER3.800 INCHES MINIMUM AND 3.840 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.375 INCHES IN
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-004-7044 5306-00-007-6129 5306-00-008-7899 5306-00-009-4739 5306-00-118-7332 5306-00-151-1777 5306-00-255-4507 5306-01-101-2459
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 571409-1?
571409-1 is a BOLT,EXTERNALLY RELIEVED BODY.
What is the NSN for 571409-1?
571409-1 is cataloged in the U.S. Government catalog under NSN 5306-00-008-8987. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.