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Technical Data Sheet
PartsTable / COMPONENT / 91X10R
91X10R ✓ 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,LOCK is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-011-6121, 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
91X10R
NSN: 5310-00-011-6121
FSC: 5310
CAGE: 80837 — KYSOR/WESTRAN CORP AUSTIN TRAILER DIV (USA)
SPECIFICATIONS
Part Number91X10R
NSN5310-00-011-6121
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 91X10R · 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 18
103323Interchangeable
interchangeable cross-reference
interchangeable
92-8Interchangeable
interchangeable cross-reference
interchangeable
116121Interchangeable
interchangeable cross-reference
interchangeable
1-2 RInterchangeable
Wash34
interchangeable
120384Interchangeable
Wash34
interchangeable
W-1050-HInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 91X10R?
91X10R is a WASHER,LOCK.
What parts can replace 91X10R?
There are 18 known substitutes for 91X10R: 103323, 92-8, 116121 and 15 more. Substitute compatibility should be verified for your specific system.
Is 91X10R still available?
91X10R is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026