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187851 ✓ 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 PLATE,WALL,ELECTRICAL 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 5315-00-018-7851, 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
187851
NSN: 5315-00-018-7851
FSC: 5315
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
general_characteristics_item_descriptionEFFECTIVE LG 7.575 IN. LG,1.500 IN. WELL DEPTH,ONE END 90 DEGREE ANGLE,H TENSION,9.845 IN. LG,0.7500 IN NUT ON EACH END,APPL J57 ACFT,JET ENGINE IN
NSN5315-00-018-7851
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 187851 · 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
•
PILOT LENGTH: 0.062 INCHES NOMINAL IN
•
FIRST END OUTER RADIUS: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD ALL MATERIAL RESPONSES OVERALL
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
SURFACE TREATMENT: ZINC OVERALL
•
STYLE DESIGNATOR: FULL LENGTH GROOVE
•
MATERIAL: STEEL COMP 1112 OR STEEL COMP 1113 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
PILOT LENGTH0.062 INCHES NOMINAL IN
FIRST END OUTER RADIUS0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
OVERALL LENGTH1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD ALL MATERIAL RESPONSES OVERALL
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
SURFACE TREATMENTZINC OVERALL
STYLE DESIGNATORFULL LENGTH GROOVE
MATERIALSTEEL COMP 1112 OR STEEL COMP 1113 OVERALL
PIN SMALL END DIAMETER0.1855 INCHES MINIMUM AND 0.1875 INCHES MAXIMUM IN
PIN LARGE END DIAMETER0.196 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
20300-80Interchangeable
interchangeable cross-reference
interchangeable
8400-4Interchangeable
interchangeable cross-reference
interchangeable
20100-80Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 187851?
187851 is a PLATE,WALL,ELECTRICAL.
What parts can replace 187851?
There are 3 known substitutes for 187851: 20300-80, 8400-4, 20100-80. Substitute compatibility should be verified for your specific system.
What is the NSN for 187851?
187851 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-018-7851. 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