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422996 ✓ 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 TUBE ASSEMBLY,METAL is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: GANG CHANNEL, SELF LOCKING, base_width: 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN, nut_height: 0.350 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN, nut_length: 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN, thread_class: 3B. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-846-3137, 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
422996
NSN: 5310-00-846-3137
FSC: 5310
CAGE: 72962 — HARVARD INDUSTRIES INC (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
nut_styleGANG CHANNEL, SELF LOCKING
base_width0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
nut_height0.350 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
nut_length0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNF
base_thickness0.055 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
precious_materialSILVER
surface_treatmentSILVER OVERALL
NSN5310-00-846-3137
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 422996 · 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
•
PRECIOUS MATERIAL: SILVER
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL: IRON ALLOY 660 OVERALL
•
SURFACE TREATMENT: SILVER OVERALL
•
BASE WIDTH: 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
•
THREAD QUANTITY PER INCH: 24
•
THREAD SERIES: UNF
TECHNICAL CHARACTERISTICS (FLIS)
PRECIOUS MATERIALSILVER
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
MATERIALIRON ALLOY 660 OVERALL
SURFACE TREATMENTSILVER OVERALL
BASE WIDTH0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH24
THREAD SERIESUNF
NOMINAL THREAD SIZE0.312 INCHES IN
BASE THICKNESS0.055 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
288618Interchangeable
interchangeable cross-reference
interchangeable
ZG2835A054Interchangeable
interchangeable cross-reference
interchangeable
7377706Interchangeable
interchangeable cross-reference
interchangeable
422994Interchangeable
interchangeable cross-reference
interchangeable
3TFB21073SInterchangeable
interchangeable cross-reference
interchangeable
7377707Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 422996?
422996 is a TUBE ASSEMBLY,METAL.
What parts can replace 422996?
There are 15 known substitutes for 422996: 288618, ZG2835A054, 7377706 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 422996?
422996 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-846-3137. 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