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90001A2012 — Technical Data Sheet

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— · 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,SPLIT is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System under NSN 5310-00-949-6139, 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
90001A2012
NSN: 5310-00-949-6139
FSC: 5310
CAGE: 01365 — MARINE CORPS SYSTEMS COMMAND DIV MARINE CORPS SYSTEMS COMMAND TECHNICAL DATA REPOSITORY CUSTOMER SERVICE (USA)
SPECIFICATIONS
Part Number90001A2012
NSN5310-00-949-6139
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 90001A2012 · 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 26
PDM40-200-11292InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
719614-1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
PS261-4RInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
AS52684InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
52684InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
MK777-203InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 90001A2012?
90001A2012 is a WASHER,SPLIT.
What parts can replace 90001A2012?
There are 26 known substitutes for 90001A2012: PDM40-200-11292, 719614-1, PS261-4R and 23 more. Substitute compatibility should be verified for your specific system.
Is 90001A2012 still available?
90001A2012 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: September 2026