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H348739-13 ✓ 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,LOCK is a the manufacturer industrial component. Key specifications include hole_diameter: 0.390 INCHES NOMINAL IN, outside_diameter: 0.680 INCHES NOMINAL IN, special_features: NOMINAL WASHER SIZE 3/8 (0.375), style_designator: FLAT EXTERNAL TEETH, material_thickness: 0.036 INCHES NOMINAL IN, end_item_identification: NSN: 1430-01-524-6688. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-546-2527, 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
H348739-13
NSN: 5310-01-546-2527
FSC: 5310
CAGE: 49956 — RAYTHEON COMPANY DIV CORP (USA)
SPECIFICATIONS
hole_diameter0.390 INCHES NOMINAL IN
outside_diameter0.680 INCHES NOMINAL IN
special_featuresNOMINAL WASHER SIZE 3/8 (0.375)
style_designatorFLAT EXTERNAL TEETH
material_thickness0.036 INCHES NOMINAL IN
end_item_identificationNSN: 1430-01-524-6688
part_name_assigned_by_controlling_agencyWASHER, LOCK - EXTERNAL TOOTH, CRES
NSN5310-01-546-2527
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: H348739-13 · 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: 0.390 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT EXTERNAL TEETH
•
OUTSIDE DIAMETER: 0.680 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.036 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER, LOCK - EXTERNAL TOOTH, CRES
SPECIAL FEATURESNOMINAL WASHER SIZE 3/8 (0.375)
HOLE DIAMETER0.390 INCHES NOMINAL IN
STYLE DESIGNATORFLAT EXTERNAL TEETH
END ITEM IDENTIFICATIONNSN: 1430-01-524-6688
OUTSIDE DIAMETER0.680 INCHES NOMINAL IN
MATERIAL THICKNESS0.036 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
22-046-335Interchangeable
interchangeable cross-reference
interchangeable
C4325-6Interchangeable
interchangeable cross-reference
interchangeable
F91C154Interchangeable
interchangeable cross-reference
interchangeable
F91D059Interchangeable
interchangeable cross-reference
interchangeable
STSInterchangeable
interchangeable cross-reference
interchangeable
53120-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is H348739-13?
H348739-13 is a WASHER,LOCK.
What parts can replace H348739-13?
There are 15 known substitutes for H348739-13: 22-046-335, C4325-6, F91C154 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for H348739-13?
H348739-13 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-546-2527. 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