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PartsTable / COMPONENT / 79-040-178-0438
79-040-178-0438 ✓ 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: 0.188 INCHES NOMINAL IN, material: STEEL COMP 410 OVERALL, overall_length: 0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN, style_designator: SLOTTED, material_thickness: 0.040 INCHES NOMINAL IN, material_document_and_classification: AMS 5506 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-849-8950, 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
79-040-178-0438
NSN: 5315-00-849-8950
FSC: 5315
CAGE: 72962 — HARVARD INDUSTRIES INC (USA)
SPECIFICATIONS
diameter0.188 INCHES NOMINAL IN
materialSTEEL COMP 410 OVERALL
overall_length0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN
style_designatorSLOTTED
material_thickness0.040 INCHES NOMINAL IN
material_document_and_classificationAMS 5506 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5315-00-849-8950
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 79-040-178-0438 · 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
•
STYLE DESIGNATOR: SLOTTED
•
MATERIAL: STEEL COMP 410 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5506 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL THICKNESS: 0.040 INCHES NOMINAL IN
•
DIAMETER: 0.188 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORSLOTTED
MATERIALSTEEL COMP 410 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5506 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL THICKNESS0.040 INCHES NOMINAL IN
DIAMETER0.188 INCHES NOMINAL IN
OVERALL LENGTH0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
A-A-59126/3205Interchangeable
interchangeable cross-reference
interchangeable
17833-05Interchangeable
interchangeable cross-reference
interchangeable
P312493Interchangeable
Same NIIN cross-reference
interchangeable
79-040-187-0436Interchangeable
Same NIIN cross-reference
interchangeable
MS171585Interchangeable
Same NIIN cross-reference
interchangeable
MILP10971Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 79-040-178-0438?
79-040-178-0438 is a PIN,SPRING.
What parts can replace 79-040-178-0438?
There are 9 known substitutes for 79-040-178-0438: A-A-59126/3205, 17833-05, P312493 and 6 more. Substitute compatibility should be verified for your specific system.
Is 79-040-178-0438 still available?
79-040-178-0438 is currently cancelled.
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Last verified: July 2026