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Technical Data Sheet
PartsTable / COMPONENT / 5-13-2587 ITEM NO. 6-8
5-13-2587 ITEM NO. 6-8 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The 5-13-2587 ITEM NO. 6-8 is a the manufacturer industrial component. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-161-1859, 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
5-13-2587 ITEM NO. 6-8
NSN: 5310-00-161-1859
FSC: 5310
CAGE: 81337 — W1D1 NATICK SOLDIER CENTER DBA US ARMY CCDC SOLDIER CENTER DIV COMBAT CAPABILITIES DEVELOPMENT COMMAND - SOLDIER CENTER (USA)
SPECIFICATIONS
Part Number5-13-2587 ITEM NO. 6-8
NSN5310-00-161-1859
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5-13-2587 ITEM NO. 6-8 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
THREAD QUANTITY PER INCH: 27
•
BEARING SURFACE TYPE: CHAMFERED
•
THREAD SERIES: UNS
•
NOMINAL THREAD SIZE: 0.438 INCHES IN
•
NUT STYLE: HEXAGON
•
WIDTH ACROSS FLATS: 0.562 INCHES NOMINAL IN
•
NUT HEIGHT: 0.395 INCHES NOMINAL IN
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH27
BEARING SURFACE TYPECHAMFERED
THREAD SERIESUNS
NOMINAL THREAD SIZE0.438 INCHES IN
NUT STYLEHEXAGON
WIDTH ACROSS FLATS0.562 INCHES NOMINAL IN
NUT HEIGHT0.395 INCHES NOMINAL IN
THREAD CLASS2B
MATERIALSTEEL COMP 12L14 OVERALL
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
5-13-2581 ITEM NO. 11Interchangeable
interchangeable cross-reference
interchangeable
5-13-62REV2Interchangeable
interchangeable cross-reference
interchangeable
MIL-L-1594Interchangeable
interchangeable cross-reference
interchangeable
5-13-2581 ITEM NO. 12Interchangeable
interchangeable cross-reference
interchangeable
5-13-2585 ITEM 12Interchangeable
interchangeable cross-reference
interchangeable
5-13-2590 ITEM 7Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5-13-2587 ITEM NO. 6-8?
5-13-2587 ITEM NO. 6-8 is a 5-13-2587 ITEM NO. 6-8.
What parts can replace 5-13-2587 ITEM NO. 6-8?
There are 17 known substitutes for 5-13-2587 ITEM NO. 6-8: 5-13-2581 ITEM NO. 11, 5-13-62REV2, MIL-L-1594 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5-13-2587 ITEM NO. 6-8?
5-13-2587 ITEM NO. 6-8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-161-1859. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026