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25704-281220-37-0 — 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,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.203 INCHES NOMINAL IN, outside_diameter: 0.359 INCHES NOMINAL IN, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: DICHROMATE ZINC OVERALL, material_thickness: 0.035 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System under NSN 5310-00-186-7499, 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
25704-281220-37-0
NSN: 5310-00-186-7499
FSC: 5310
CAGE: D1839 — BAAINBW DOKUMENTE OHNE NUTZUNGSRECHTE DES BAAINBW FUR BESCHAFFUNGSZWECKE (DEU)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.203 INCHES NOMINAL IN
outside_diameter0.359 INCHES NOMINAL IN
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentDICHROMATE ZINC OVERALL
material_thickness0.035 INCHES NOMINAL IN
NSN5310-00-186-7499
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 25704-281220-37-0 · 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
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
MATERIAL: STEEL OVERALL
•
OUTSIDE DIAMETER: 0.359 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.035 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.203 INCHES NOMINAL IN
•
SURFACE TREATMENT: DICHROMATE ZINC OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
MATERIALSTEEL OVERALL
OUTSIDE DIAMETER0.359 INCHES NOMINAL IN
MATERIAL THICKNESS0.035 INCHES NOMINAL IN
HOLE DIAMETER0.203 INCHES NOMINAL IN
SURFACE TREATMENTDICHROMATE ZINC OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
852950InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
45815InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
850104InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
A45815InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
R820106 PIECE 37InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
45815-80InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 25704-281220-37-0?
25704-281220-37-0 is a WASHER,LOCK.
What parts can replace 25704-281220-37-0?
There are 11 known substitutes for 25704-281220-37-0: 852950, 45815, 850104 and 8 more. Substitute compatibility should be verified for your specific system.
Is 25704-281220-37-0 still available?
25704-281220-37-0 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: October 2026