PartsTable
Technical Data Sheet
Download PDF

EU20513 — BOLT,EXTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

EU20513: BOLT,EXTERNALLY RELIEVED BODY.

The BOLT,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8740 OVERALL, head_style: DOUBLE HEXAGON EXTENDED WASHER, head_height: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.812 INCHES MINIMUM IN, fastener_length: 2.812 INCHES MINIMUM AND 2.827 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-849-9565, 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
EU20513
NSN: 5306-00-849-9565
FSC: 5306 — Bolts
CAGE: K0680 — ROLLS-ROYCE AIRLINES (GBR)
SPECIFICATIONS
materialSTEEL COMP 8740 OVERALL
head_styleDOUBLE HEXAGON EXTENDED WASHER
head_height0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
thread_class3A A
thread_length0.812 INCHES MINIMUM IN
fastener_length2.812 INCHES MINIMUM AND 2.827 INCHES MAXIMUM IN
hardness_rating25.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_between_flats0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
nominal_thread_diameter0.312 INCHES IN
extended_washer_diameter0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
NSN5306-00-849-9565
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: EU20513 · 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
•
EXTENDED WASHER THICKNESS: 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
•
FASTENER LENGTH: 2.812 INCHES MINIMUM AND 2.827 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.812 INCHES MINIMUM IN
•
HARDNESS RATING: 25.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
FIRST DIAMETER FROM HEAD: 0.307 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
HEAD HEIGHT0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
FASTENER LENGTH2.812 INCHES MINIMUM AND 2.827 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
THREAD LENGTH0.812 INCHES MINIMUM IN
HARDNESS RATING25.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
FIRST DIAMETER FROM HEAD0.307 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER1.940 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.312 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
6865043Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy EU20513?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is EU20513?
EU20513 is a BOLT,EXTERNALLY RELIEVED BODY.
What parts can replace EU20513?
There is 1 known substitute for EU20513: 6865043. Substitute compatibility should be verified for your specific system.
What is the NSN for EU20513?
EU20513 is cataloged in the U.S. Government catalog under NSN 5306-00-849-9565. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — EU20513

✓ 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.