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1857386 — RING,PISTON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

1857386: RING,PISTON.

The RING,PISTON is a the manufacturer industrial component. Key specifications include special_features: DIESEL ENGINE PU-835/T, end_item_identification: 7.5KW GENERATOR. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-272-6450, 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
1857386
NSN: 5310-00-272-6450
NIINs: 002726450, 016205337
FSC: 5310 — Nuts and Washers
CAGE: 1LW55 — BORGWARNER PDS (ANDERSON), L.L.C. (USA)
SPECIFICATIONS
special_featuresDIESEL ENGINE PU-835/T
end_item_identification7.5KW GENERATOR
NSN5310-00-272-6450
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1857386 · 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
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STYLE DESIGNATOR: RECESSED
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MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
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OUTSIDE DIAMETER: 1.928 INCHES MINIMUM AND 1.948 INCHES MAXIMUM IN
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RECESS DEPTH: 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
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MATERIAL THICKNESS: 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
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SURFACE TREATMENT: CADMIUM OVERALL
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MATERIAL: STEEL COMP 1010 OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.208 INCHES MINIMUM AND 0.228 INCHES MAXIMUM IN
STYLE DESIGNATORRECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.928 INCHES MINIMUM AND 1.948 INCHES MAXIMUM IN
RECESS DEPTH0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
MATERIAL THICKNESS0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
MATERIALSTEEL COMP 1010 OVERALL
HOLE DIAMETER0.5212 INCHES MINIMUM AND 0.5412 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 3
A060044Reference document
Same NSN cross-reference
Reference document — Secondary reference
A065382Reference document
Same NSN cross-reference
Reference document — Secondary reference
1905615Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1857386?
1857386 is a RING,PISTON.
What parts can replace 1857386?
There are 3 known substitutes for 1857386: A060044, A065382, 1905615. Substitute compatibility should be verified for your specific system.
What is the NSN for 1857386?
1857386 is cataloged in the U.S. Government catalog under NSN 5310-00-272-6450. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.