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4370299 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4370299: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL PROPERTY CLASS 9.8 OVERALL, head_style: HEXAGON EXTENDED WASHER, head_height: 5.5 MILLIMETERS MINIMUM AND 10.5 MILLIMETERS MAXIMUM MM, thread_length: 102.5 MILLIMETERS MINIMUM AND 107.5 MILLIMETERS MAXIMUM MM, fastener_length: 102.5 MILLIMETERS MINIMUM AND 107.5 MILLIMETERS MAXIMUM MM, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-476-3308, 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
4370299
NSN: 5310-01-476-3308
NIINs: 014763308, 015890961, 016740002
FSC: 5310 — Nuts and Washers
CAGE: 1J955 — JOHN DEERE CONSTRUCTION & FORESTRY COMPANY DIV DIRECT GOVERNMENTAL SALES (USA)
SPECIFICATIONS
materialSTEEL PROPERTY CLASS 9.8 OVERALL
head_styleHEXAGON EXTENDED WASHER
head_height5.5 MILLIMETERS MINIMUM AND 10.5 MILLIMETERS MAXIMUM MM
thread_length102.5 MILLIMETERS MINIMUM AND 107.5 MILLIMETERS MAXIMUM MM
fastener_length102.5 MILLIMETERS MINIMUM AND 107.5 MILLIMETERS MAXIMUM MM
thread_directionRIGHT-HAND
width_between_flats9.5 MILLIMETERS MINIMUM AND 14.5 MILLIMETERS MAXIMUM MM
end_item_identification2320-01-652-5208
nominal_thread_diameter8.0 MILLIMETERS MM
extended_washer_diameter15.0 MILLIMETERS MINIMUM AND 18.0 MILLIMETERS MAXIMUM MM
thread_series_designatorM
thread_pitch_in_millimeters1.25
NSN5310-01-476-3308
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4370299 · 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
TECHNICAL CHARACTERISTICS
END ITEM IDENTIFICATIONCONTRACTOR LOGISTICS LIFETIME SUPPORT (CRLS),HYDRAULIC EXCAVATOR TYPE 1 (HYEX)(MODEL 230 LCR HX1),NSN 3805-01-463-0804,TM5-3805-280-24-P
SUBSTITUTES & CROSS-REFERENCES 1
AT214245Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4370299?
4370299 is a WASHER,FLAT.
What parts can replace 4370299?
There is 1 known substitute for 4370299: AT214245. Substitute compatibility should be verified for your specific system.
What is the NSN for 4370299?
4370299 is cataloged in the U.S. Government catalog under NSN 5310-01-476-3308. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.