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PartsTable / COMPONENT / MS171655
MS171655 ✓ 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: 1.125 INCHES NOMINAL IN, hardness_rating: 83.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 86.9 ROCKWELL SUPERFICIAL 15-N MAXIMUM OVERALL, style_designator: SLOTTED, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-053-1865, 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
MS171655
NSN: 5315-00-053-1865
FSC: 5315
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
diameter0.250 INCHES NOMINAL IN
materialSTEEL COMP 410 OVERALL
overall_length1.125 INCHES NOMINAL IN
hardness_rating83.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 86.9 ROCKWELL SUPERFICIAL 15-N MAXIMUM OVERALL
style_designatorSLOTTED
surface_treatmentPASSIVATE OVERALL
material_thickness0.048 INCHES NOMINAL IN
material_document_and_classificationAMS 5506 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5315-00-053-1865
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS171655 · 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
•
DIAMETER: 0.250 INCHES NOMINAL IN
•
SPECIFICATION/STANDARD DATA: 80205-NAS561 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
HARDNESS RATING: 43.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM OVERALL
•
STYLE DESIGNATOR: SLOTTED
•
MATERIAL THICKNESS: 0.048 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL COMP 410 OR STEEL COMP 414 OR STEEL COMP 416 OR STEEL COMP 416SE OR STEEL COMP 420 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH1.105 INCHES MINIMUM AND 1.145 INCHES MAXIMUM IN
DIAMETER0.250 INCHES NOMINAL IN
SPECIFICATION/STANDARD DATA80205-NAS561 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
HARDNESS RATING43.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORSLOTTED
MATERIAL THICKNESS0.048 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 410 OR STEEL COMP 414 OR STEEL COMP 416 OR STEEL COMP 416SE OR STEEL COMP 420 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
FV 766684 ITEM 10Interchangeable
interchangeable cross-reference
interchangeable
PS250-1125CRPA048Interchangeable
interchangeable cross-reference
interchangeable
MS171655Interchangeable
interchangeable cross-reference
interchangeable
589807Interchangeable
Same NIIN cross-reference
interchangeable
MIL-P-10971Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS171655?
MS171655 is a PIN,SPRING.
What parts can replace MS171655?
There are 5 known substitutes for MS171655: FV 766684 ITEM 10, PS250-1125CRPA048, MS171655 and 2 more. Substitute compatibility should be verified for your specific system.
Is MS171655 still available?
MS171655 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