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PartsTable / COMPONENT / MS171646
MS171646 ✓ 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: 0.250 INCHES NOMINAL IN, material: STEEL COMP 410 OVERALL, overall_length: 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN, style_designator: SLOTTED, material_thickness: 0.048 INCHES NOMINAL IN, material_document_and_classification: AMS 5506 ASSN STD SINGLE MATERIAL RESPONSE 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 5315-00-153-8271, 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
MS171646
NSN: 5315-00-153-8271
FSC: 5315
CAGE: 72962 — HARVARD INDUSTRIES INC (USA)
SPECIFICATIONS
diameter0.250 INCHES NOMINAL IN
materialSTEEL COMP 410 OVERALL
overall_length0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
style_designatorSLOTTED
material_thickness0.048 INCHES NOMINAL IN
material_document_and_classificationAMS 5506 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5315-00-153-8271
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS171646 · 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: 0.048 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
DIAMETER: 0.250 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: SLOTTED
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
•
HARDNESS RATING: 43.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.048 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
OVERALL LENGTH0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
DIAMETER0.250 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
STYLE DESIGNATORSLOTTED
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
HARDNESS RATING43.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
MS171646Interchangeable
interchangeable cross-reference
interchangeable
MS9047-224Interchangeable
interchangeable cross-reference
interchangeable
NASM10971TYPE1COMPOSITIONAInterchangeable
interchangeable cross-reference
interchangeable
79-048-250-1500Interchangeable
interchangeable cross-reference
interchangeable
MS16562-254Interchangeable
interchangeable cross-reference
interchangeable
325-043Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS171646?
MS171646 is a PIN,SPRING.
What parts can replace MS171646?
There are 10 known substitutes for MS171646: MS171646, MS9047-224, NASM10971TYPE1COMPOSITIONA and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS171646?
MS171646 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-153-8271. 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