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PartsTable / COMPONENT / MILP10971
MILP10971 ✓ 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, overall_length: 1.125 INCHES NOMINAL IN, shear_strength: 7700 DOUBLE POUNDS PER SQUARE INCH, hardness_rating: 46.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL, style_designator: COILED, expanded_diameter: 0.258 INCHES MINIMUM AND 0.268 INCHES MAXIMUM IN. 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
MILP10971
NSN: 5315-00-053-1865
FSC: 5315
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
diameter0.250 INCHES NOMINAL IN
overall_length1.125 INCHES NOMINAL IN
shear_strength7700 DOUBLE POUNDS PER SQUARE INCH
hardness_rating46.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
style_designatorCOILED
expanded_diameter0.258 INCHES MINIMUM AND 0.268 INCHES MAXIMUM IN
surface_treatmentCADMIUM OVERALL
specification/standard_data96906-MS51987 GOVERNMENT STANDARD
departure_from_cited_documentMAGNETIC PERMEABILITY SHALL NOT EXCEED 2.0 AFTER FABRICATION
departure_from_cited_designatorMAGNETIC PERMEABILITY SHALL NOT EXCEED 2.0 AFTER MANIFACTIONING
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES OVERALL
surface_treatment_document_and_classificationQQ-P-416, TYPE II, CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5315-00-053-1865
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MILP10971 · 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 4
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
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MILP10971?
MILP10971 is a PIN,SPRING.
What parts can replace MILP10971?
There are 4 known substitutes for MILP10971: FV 766684 ITEM 10, PS250-1125CRPA048, MS171655 and 1 more. Substitute compatibility should be verified for your specific system.
Is MILP10971 still available?
MILP10971 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