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5161621 ✓ 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,CONVEX is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.406 INCHES NOMINAL IN, heat_treatment: OIL QUENCHED, outside_diameter: 0.750 INCHES NOMINAL IN, style_designator: CONVEX, features_provided: CASEHARDENED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-276-3015, 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
5161621
NSN: 5310-00-276-3015
FSC: 5310
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.406 INCHES NOMINAL IN
heat_treatmentOIL QUENCHED
outside_diameter0.750 INCHES NOMINAL IN
style_designatorCONVEX
features_providedCASEHARDENED
surface_treatmentCADMIUM OR ZINC OVERALL
material_thickness0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
end_item_identification2320-01-097-0260 HEMTT (HEAVY EXPANDED MOBILITY TACTICAL TRUCK)
material_document_and_classification4M,FSCM 24617 MFR REF SINGLE MATERIAL RESPONSE OR 5M,FSCM 24617 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-276-3015
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5161621 · 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: 0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
•
STYLE DESIGNATOR: CONVEX
•
OUTSIDE DIAMETER: 0.750 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 4M,FSCM 24617 MFR REF SINGLE MATERIAL RESPONSE OR 5M,FSCM 24617 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
HOLE DIAMETER: 0.406 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
STYLE DESIGNATORCONVEX
END ITEM IDENTIFICATION2320-01-097-0260 HEMTT (HEAVY EXPANDED MOBILITY TACTICAL TRUCK)
OUTSIDE DIAMETER0.750 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION4M,FSCM 24617 MFR REF SINGLE MATERIAL RESPONSE OR 5M,FSCM 24617 MFR REF SINGLE MATERIAL RESPONSE OVERALL
HOLE DIAMETER0.406 INCHES NOMINAL IN
FEATURES PROVIDEDCASEHARDENED
HEAT TREATMENTOIL QUENCHED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
S-3-36ALT4-1-1/4INInterchangeable
interchangeable cross-reference
interchangeable
MILF1183Interchangeable
interchangeable cross-reference
interchangeable
014306-BVInterchangeable
interchangeable cross-reference
interchangeable
5150-250Interchangeable
interchangeable cross-reference
interchangeable
PC5150250Interchangeable
Same NIIN cross-reference
interchangeable
K-5150250Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5161621?
5161621 is a WASHER,CONVEX.
What parts can replace 5161621?
There are 8 known substitutes for 5161621: S-3-36ALT4-1-1/4IN, MILF1183, 014306-BV and 5 more. Substitute compatibility should be verified for your specific system.
Is 5161621 still available?
5161621 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