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E2538 ✓ 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 WASHER,SPOOL 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 5310-00-161-1396, 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
E2538
NSN: 5310-00-161-1396
FSC: 5310
CAGE: 93234 — WORTHINGTON COMPRESSORS INC AIR POWER AND CONSTRUCTION EQUIP DIV (USA)
SPECIFICATIONS
Part NumberE2538
NSN5310-00-161-1396
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: E2538 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
60A242Interchangeable
interchangeable cross-reference
interchangeable
A6067A6157Interchangeable
interchangeable cross-reference
interchangeable
S1188502Interchangeable
interchangeable cross-reference
interchangeable
678&5Interchangeable
interchangeable cross-reference
interchangeable
SA3274Interchangeable
interchangeable cross-reference
interchangeable
535834-6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is E2538?
E2538 is a WASHER,SPOOL.
What parts can replace E2538?
There are 9 known substitutes for E2538: 60A242, A6067A6157, S1188502 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for E2538?
E2538 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-161-1396. 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