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Technical Data Sheet
PartsTable / COMPONENT / 3131509C
3131509C ✓ 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,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.312 INCHES NOMINAL IN, overall_height: 0.156 INCHES NOMINAL IN, outside_diameter: 0.595 INCHES NOMINAL IN, surface_treatment: CHROMATE OVERALL, material_thickness: 0.010 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-580-5382, 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
3131509C
NSN: 5310-00-580-5382
FSC: 5310
CAGE: 28548 — FABRICATION SPECIALTY INC DBA FABRICATION SPECIALTY INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.312 INCHES NOMINAL IN
overall_height0.156 INCHES NOMINAL IN
outside_diameter0.595 INCHES NOMINAL IN
surface_treatmentCHROMATE OVERALL
material_thickness0.010 INCHES NOMINAL IN
NSN5310-00-580-5382
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3131509C · 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
•
MATERIAL THICKNESS: 0.010 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
OUTSIDE DIAMETER: 0.595 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.312 INCHES NOMINAL IN
•
SURFACE TREATMENT: CHROMATE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.010 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
OUTSIDE DIAMETER0.595 INCHES NOMINAL IN
HOLE DIAMETER0.312 INCHES NOMINAL IN
SURFACE TREATMENTCHROMATE OVERALL
OVERALL HEIGHT0.156 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
536934-2Interchangeable
interchangeable cross-reference
interchangeable
HL21255Interchangeable
interchangeable cross-reference
interchangeable
NC1315Interchangeable
interchangeable cross-reference
interchangeable
7013718P1Interchangeable
interchangeable cross-reference
interchangeable
265-12-01-106Interchangeable
interchangeable cross-reference
interchangeable
7013718PT1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3131509C?
3131509C is a WASHER,SPRING TENSION.
What parts can replace 3131509C?
There are 24 known substitutes for 3131509C: 536934-2, HL21255, NC1315 and 21 more. Substitute compatibility should be verified for your specific system.
Is 3131509C still available?
3131509C 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