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Technical Data Sheet
PartsTable / COMPONENT / 503B1-36
503B1-36 ✓ 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 WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 420 OVERALL, hole_diameter: 0.168 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN, outside_diameter: 0.293 INCHES NOMINAL IN, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: PASSIVATE OVERALL, material_thickness: 0.040 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-869-4199, 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
503B1-36
NSN: 5310-00-869-4199
FSC: 5310
CAGE: 94033 — CARDWELL CONDENSER CORP LAPOINTE-ADMIRAL DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 420 OVERALL
hole_diameter0.168 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN
outside_diameter0.293 INCHES NOMINAL IN
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentPASSIVATE OVERALL
material_thickness0.040 INCHES NOMINAL IN
end_item_identificationMULTIPLE LAUNCH ROCKET SYSTEM (MLRS); LOGISTICS SUPPORT VESSEL
nondefinitive_spec/std_dataB CLASS AND 2 STYLE
material_document_and_classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-869-4199
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 503B1-36 · 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
•
NONDEFINITIVE SPEC/STD DATA: B CLASS AND 2 STYLE
•
HOLE DIAMETER: 0.168 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.293 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL COMP 420 OVERALL
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
MATERIAL THICKNESS: 0.040 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
NONDEFINITIVE SPEC/STD DATAB CLASS AND 2 STYLE
END ITEM IDENTIFICATIONMULTIPLE LAUNCH ROCKET SYSTEM (MLRS); LOGISTICS SUPPORT VESSEL
HOLE DIAMETER0.168 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.293 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 420 OVERALL
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
MATERIAL THICKNESS0.040 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
429067Interchangeable
interchangeable cross-reference
interchangeable
98210ADXInterchangeable
interchangeable cross-reference
interchangeable
61724020008Interchangeable
interchangeable cross-reference
interchangeable
5310PL1370038Interchangeable
interchangeable cross-reference
interchangeable
50-30-8Interchangeable
interchangeable cross-reference
interchangeable
273710Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 503B1-36?
503B1-36 is a WASHER,LOCK.
What parts can replace 503B1-36?
There are 25 known substitutes for 503B1-36: 429067, 98210ADX, 61724020008 and 22 more. Substitute compatibility should be verified for your specific system.
Is 503B1-36 still available?
503B1-36 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