PartsTable
Technical Data Sheet
55LH7896-3 ✓ 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

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL COMP 8740 OR STEEL COMP H11 OVERALL, nut_style: DOUBLE HEXAGON, lubrication: SOLUBLE LUBRICANT, temp_rating: -65.0 FAHRENHEIT MINIMUM AND 450.0 FAHRENHEIT MAXIMUM DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-460-8776, 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
55LH7896-3
NSN: 5310-00-460-8776
FSC: 5310
CAGE: 72962 — HARVARD INDUSTRIES INC (USA)
SPECIFICATIONS
materialSTEEL COMP 8740 OR STEEL COMP H11 OVERALL
nut_styleDOUBLE HEXAGON
lubricationSOLUBLE LUBRICANT
temp_rating-65.0 FAHRENHEIT MINIMUM AND 450.0 FAHRENHEIT MAXIMUM DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
overall_height0.265 INCHES MAXIMUM IN
hardness_rating45.0 ROCKWELL C NOMINAL
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
washer_thickness0.008 INCHES MINIMUM IN
surface_treatmentCADMIUM OVERALL
NSN5310-00-460-8776
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 55LH7896-3 · 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
THREAD DIRECTION: RIGHT-HAND
LUBRICATION: SOLUBLE LUBRICANT
THREAD CLASS: 3B
THREAD QUANTITY PER INCH: 32
LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN
HARDNESS RATING: 45.0 ROCKWELL C NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION: AMS6322 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 6485 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
LUBRICATIONSOLUBLE LUBRICANT
THREAD CLASS3B
THREAD QUANTITY PER INCH32
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
HARDNESS RATING45.0 ROCKWELL C NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS6322 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 6485 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 8740 OR STEEL COMP H11 OVERALL
SURFACE TREATMENTCADMIUM OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
68458-1032Interchangeable
interchangeable cross-reference
interchangeable
68250Interchangeable
interchangeable cross-reference
interchangeable
STSCD005-03Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 55LH7896-3?
55LH7896-3 is a NUT,SELF-LOCKING,EXTENDED WASHER.
What parts can replace 55LH7896-3?
There are 3 known substitutes for 55LH7896-3: 68458-1032, 68250, STSCD005-03. Substitute compatibility should be verified for your specific system.
What is the NSN for 55LH7896-3?
55LH7896-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-460-8776. This indicates validated use in U.S. government and defense supply chains.
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