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725937 ✓ 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,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: STEEL COMP 631 OVERALL, hole_diameter: 0.820 INCHES NOMINAL IN, overall_height: 0.032 INCHES MINIMUM AND 0.088 INCHES MAXIMUM IN, outside_diameter: 0.856 INCHES NOMINAL IN, material_thickness: 0.036 INCHES NOMINAL IN, material_document_and_classification: AMS 5529 COND C 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 5310-01-248-4509, 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
725937
NSN: 5310-01-248-4509
FSC: 5310
CAGE: 99167 — HAMILTON SUNDSTRAND CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 631 OVERALL
hole_diameter0.820 INCHES NOMINAL IN
overall_height0.032 INCHES MINIMUM AND 0.088 INCHES MAXIMUM IN
outside_diameter0.856 INCHES NOMINAL IN
material_thickness0.036 INCHES NOMINAL IN
material_document_and_classificationAMS 5529 COND C ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-248-4509
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 725937 · 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
•
HOLE DIAMETER: 0.820 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5529 COND C ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP 631 OVERALL
•
OUTSIDE DIAMETER: 0.856 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.036 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL HEIGHT0.032 INCHES MINIMUM AND 0.088 INCHES MAXIMUM IN
HOLE DIAMETER0.820 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5529 COND C ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 631 OVERALL
OUTSIDE DIAMETER0.856 INCHES NOMINAL IN
MATERIAL THICKNESS0.036 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
4261-1Interchangeable
interchangeable cross-reference
interchangeable
7039-93Interchangeable
interchangeable cross-reference
interchangeable
AF3058Interchangeable
interchangeable cross-reference
interchangeable
K19Interchangeable
interchangeable cross-reference
interchangeable
LL-H58-5062Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 725937?
725937 is a WASHER,SPRING TENSION.
What parts can replace 725937?
There are 5 known substitutes for 725937: 4261-1, 7039-93, AF3058 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 725937?
725937 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-248-4509. 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.
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Last verified: July 2026