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4373405 — NUT,PLAIN,EXTENDED WASHER,HEXAGO

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4373405: NUT,PLAIN,EXTENDED WASHER,HEXAGO.

NUT,PLAIN,EXTENDED WASHER,HEXAGO. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, overall_height: 7.4 MILLIMETERS MINIMUM AND 10.4 MILLIMETERS MAXIMUM MM, thread_direction: RIGHT-HAND, surface_treatment: ZINC OVERALL, width_across_flats: 9.5 MILLIMETERS MINIMUM AND 14.5 MILLIMETERS MAXIMUM MM. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-671-4370, 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
4373405
NSN: 5310-01-671-4370
FSC: 5310 — Nuts and Washers
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
thread_seriesM
overall_height7.4 MILLIMETERS MINIMUM AND 10.4 MILLIMETERS MAXIMUM MM
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
width_across_flats9.5 MILLIMETERS MINIMUM AND 14.5 MILLIMETERS MAXIMUM MM
nominal_thread_size8.0 MILLIMETERS MM
end_item_identification2320-01-652-5208
washer_outside_diameter19.5 MILLIMETERS MINIMUM AND 24.5 MILLIMETERS MAXIMUM MM
thread_pitch_in_millimeters1.25
part_name_assigned_by_controlling_agencyNUT, FLG
NSN5310-01-671-4370
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4373405 · 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
•
WASHER OUTSIDE DIAMETER: 19.5 MILLIMETERS MINIMUM AND 24.5 MILLIMETERS MAXIMUM MM
•
WIDTH ACROSS FLATS: 9.5 MILLIMETERS MINIMUM AND 14.5 MILLIMETERS MAXIMUM MM
•
THREAD SERIES: M
•
THREAD PITCH IN MILLIMETERS: 1.25
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 8.0 MILLIMETERS MM
•
SURFACE TREATMENT: ZINC OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT7.4 MILLIMETERS MINIMUM AND 10.4 MILLIMETERS MAXIMUM MM
WASHER OUTSIDE DIAMETER19.5 MILLIMETERS MINIMUM AND 24.5 MILLIMETERS MAXIMUM MM
WIDTH ACROSS FLATS9.5 MILLIMETERS MINIMUM AND 14.5 MILLIMETERS MAXIMUM MM
THREAD SERIESM
THREAD PITCH IN MILLIMETERS1.25
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE8.0 MILLIMETERS MM
SURFACE TREATMENTZINC OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNUT, FLG
NUT STYLEHEXAGON
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4373405?
4373405 is a NUT,PLAIN,EXTENDED WASHER,HEXAGO.
What is the NSN for 4373405?
4373405 is cataloged in the U.S. Government catalog under NSN 5310-01-671-4370. This indicates validated use in U.S. government and defense supply chains.
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