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PartsTable / COMPONENT / 820-4551388PC131
820-4551388PC131 ✓ 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 PIN,SPRING is a the manufacturer industrial component. Key specifications include diameter: 0.131 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN, material: STEEL COMP 410 OR STEEL COMP 420 OVERALL, overall_length: 0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN, hardness_rating: 43.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM OVERALL, style_designator: SLOTTED, surface_treatment: PASSIVATE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-200-2236, 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
820-4551388PC131
NSN: 5315-01-200-2236
FSC: 5315
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
diameter0.131 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
materialSTEEL COMP 410 OR STEEL COMP 420 OVERALL
overall_length0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN
hardness_rating43.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM OVERALL
style_designatorSLOTTED
surface_treatmentPASSIVATE OVERALL
material_thickness0.028 INCHES NOMINAL IN
departure_from_cited_documentMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
criticality_code_justificationZZZW
material_document_and_classificationFED-STD-66 FED STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationASTM-A380-78 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
NSN5315-01-200-2236
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 820-4551388PC131 · 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
•
HARDNESS RATING: 43.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM-A380-78 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL: STEEL COMP 410 OR STEEL COMP 420 OVERALL
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
STYLE DESIGNATOR: SLOTTED
•
DIAMETER: 0.131 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.028 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
HARDNESS RATING43.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM-A380-78 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
MATERIALSTEEL COMP 410 OR STEEL COMP 420 OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
STYLE DESIGNATORSLOTTED
OVERALL LENGTH0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN
DIAMETER0.131 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
MATERIAL THICKNESS0.028 INCHES NOMINAL IN
CRITICALITY CODE JUSTIFICATIONZZZW
MATERIAL DOCUMENT AND CLASSIFICATIONFED-STD-66 FED STD SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
N533P1316Interchangeable
interchangeable cross-reference
interchangeable
21C1541-024Interchangeable
interchangeable cross-reference
interchangeable
BA98203-107Interchangeable
interchangeable cross-reference
interchangeable
MS16562-226Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 820-4551388PC131?
820-4551388PC131 is a PIN,SPRING.
What parts can replace 820-4551388PC131?
There are 4 known substitutes for 820-4551388PC131: N533P1316, 21C1541-024, BA98203-107 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 820-4551388PC131?
820-4551388PC131 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-200-2236. 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