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Technical Data Sheet
PartsTable / COMPONENT / 79726
79726 ✓ Verified by PartsTable
Disguise · 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 UNMANNED AIRCRAFT SYSTEM is a Disguise industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-531-1399, 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
79726
NSN: 5310-00-531-1399
FSC: 5310
CAGE: 00198 — PRATT & WHITNEY CANADA CORP DIV PRATT & WHITNEY CANADA CORP. (CAN)
SPECIFICATIONS
Part Number79726
ManufacturerDisguise
NSN5310-00-531-1399
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 79726 · Disguise ⚠ 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
•
NUT THICKNESS: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 4640 OR STEEL COMP 6150 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6312 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6448 ASSN STD 2ND MATERIAL RESPONSE OVERALL
•
SURFACE TREATMENT: LEAD OVERALL
•
DRIVE POINT DEPTH: 0.125 INCHES NOMINAL IN
•
NUT DIAMETER: 6.615 INCHES MINIMUM AND 6.635 INCHES MAXIMUM IN
•
THREAD DIRECTION: LEFT-HAND
•
NOMINAL THREAD SIZE: 5.750 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
NUT THICKNESS0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
MATERIALSTEEL COMP 4640 OR STEEL COMP 6150 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6312 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6448 ASSN STD 2ND MATERIAL RESPONSE OVERALL
SURFACE TREATMENTLEAD OVERALL
DRIVE POINT DEPTH0.125 INCHES NOMINAL IN
NUT DIAMETER6.615 INCHES MINIMUM AND 6.635 INCHES MAXIMUM IN
THREAD DIRECTIONLEFT-HAND
NOMINAL THREAD SIZE5.750 INCHES IN
THREAD QUANTITY PER INCH16
THREAD SERIESUN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
72197Interchangeable
interchangeable cross-reference
interchangeable
79714Interchangeable
interchangeable cross-reference
interchangeable
79173Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 79726?
79726 is a UNMANNED AIRCRAFT SYSTEM manufactured by Disguise.
What parts can replace 79726?
There are 3 known substitutes for 79726: 72197, 79714, 79173. Substitute compatibility should be verified for your specific system.
What is the NSN for 79726?
79726 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-531-1399. 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