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Technical Data Sheet
PartsTable / COMPONENT / 138561
138561 ✓ 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

DISK,END SEAL,ELECTRICAL CONDUIT. Key specifications include hole_diameter: 0.769 INCHES MINIMUM AND 0.795 INCHES MAXIMUM IN, outside_diameter: 1.220 INCHES MINIMUM AND 1.245 INCHES MAXIMUM IN, style_designator: FLAT INTERNAL TEETH, surface_treatment: CADMIUM OR ZINC OVERALL, material_thickness: 0.047 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-013-8561, 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
138561
NSN: 5310-00-013-8561
FSC: 5310
CAGE: 12204 — CHRYSLER REALTY COMPANY LLC DBA DAIMLER CHRYSLER (USA)
SPECIFICATIONS
hole_diameter0.769 INCHES MINIMUM AND 0.795 INCHES MAXIMUM IN
outside_diameter1.220 INCHES MINIMUM AND 1.245 INCHES MAXIMUM IN
style_designatorFLAT INTERNAL TEETH
surface_treatmentCADMIUM OR ZINC OVERALL
material_thickness0.047 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
NSN5310-00-013-8561
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 138561 · 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
•
SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
•
STYLE DESIGNATOR: FLAT INTERNAL TEETH
•
MATERIAL THICKNESS: 0.047 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 1.220 INCHES MINIMUM AND 1.245 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.769 INCHES MINIMUM AND 0.795 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
STYLE DESIGNATORFLAT INTERNAL TEETH
MATERIAL THICKNESS0.047 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
OUTSIDE DIAMETER1.220 INCHES MINIMUM AND 1.245 INCHES MAXIMUM IN
HOLE DIAMETER0.769 INCHES MINIMUM AND 0.795 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
MS35333-13Interchangeable
interchangeable cross-reference
interchangeable
MS35333-47Interchangeable
interchangeable cross-reference
interchangeable
2152HXInterchangeable
interchangeable cross-reference
interchangeable
138561Interchangeable
interchangeable cross-reference
interchangeable
N539675 PIECE 27Interchangeable
interchangeable cross-reference
interchangeable
908-275-0014Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 138561?
138561 is a DISK,END SEAL,ELECTRICAL CONDUIT.
What parts can replace 138561?
There are 13 known substitutes for 138561: MS35333-13, MS35333-47, 2152HX and 10 more. Substitute compatibility should be verified for your specific system.
Is 138561 still available?
138561 is currently cancelled.
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Last verified: July 2026