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PartsTable / COMPONENT / 851865
851865 ✓ 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 CONNECTING LINK,RIGID is a the manufacturer industrial component. Key specifications include special_features: TECHNICAL DOCUMENT 40 LIGHTNING/40 LIGHTNING XR 40 SEAPRO/MARATHON, end_item_identification: SEAPRO/MARATHON, part_name_assigned_by_controlling_agency: SHIFT SHAFT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-200-3183, 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
851865
NSN: 5315-00-200-3183
FSC: 5315
CAGE: 19203 — COMBAT CAPABILITIES DEVELOPMENT COMMAND (CCDC) ARMAMENTS CENTER DBA CCDC DIV US ARMY RESEARCH, DEVELOPMENT AND ENGINEERING COMMAND ARMAMENT (USA)
SPECIFICATIONS
special_featuresTECHNICAL DOCUMENT 40 LIGHTNING/40 LIGHTNING XR 40 SEAPRO/MARATHON
end_item_identificationSEAPRO/MARATHON
part_name_assigned_by_controlling_agencySHIFT SHAFT
NSN5315-00-200-3183
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 851865 · 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
•
DIAMETER: 0.188 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.040 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL: STEEL COMP 410 OR STEEL COMP 420 OVERALL
•
HARDNESS RATING: 43.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM OVERALL
•
STYLE DESIGNATOR: SLOTTED
TECHNICAL CHARACTERISTICS (FLIS)
DIAMETER0.188 INCHES NOMINAL IN
MATERIAL THICKNESS0.040 INCHES NOMINAL IN
OVERALL LENGTH1.480 INCHES MINIMUM AND 1.520 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIALSTEEL COMP 410 OR STEEL COMP 420 OVERALL
HARDNESS RATING43.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORSLOTTED
SURFACE TREATMENTPASSIVATE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
AMS7207Interchangeable
interchangeable cross-reference
interchangeable
31-S-125-0437Interchangeable
interchangeable cross-reference
interchangeable
16-540190Interchangeable
interchangeable cross-reference
interchangeable
MS9047-294Interchangeable
interchangeable cross-reference
interchangeable
MS16562-265Interchangeable
interchangeable cross-reference
interchangeable
MS171714Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 851865?
851865 is a CONNECTING LINK,RIGID.
What parts can replace 851865?
There are 25 known substitutes for 851865: AMS7207, 31-S-125-0437, 16-540190 and 22 more. Substitute compatibility should be verified for your specific system.
Is 851865 still available?
851865 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