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4317521 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4317521: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, hole_diameter: 13.00 MILLIMETERS MINIMUM AND 13.27 MILLIMETERS MAXIMUM MM, overall_height: 19.98 MILLIMETERS MINIMUM AND 20.50 MILLIMETERS MAXIMUM MM, outside_diameter: 0.96 MILLIMETERS MINIMUM AND 1.04 MILLIMETERS MAXIMUM MM, style_designator: INTERNAL TEETH, end_item_identification: 4210-01-622-0440; TRUCK, FIRE FIGHTING. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-661-3876, 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
4317521
NSN: 5310-01-661-3876
FSC: 5310 — Nuts and Washers
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
hole_diameter13.00 MILLIMETERS MINIMUM AND 13.27 MILLIMETERS MAXIMUM MM
overall_height19.98 MILLIMETERS MINIMUM AND 20.50 MILLIMETERS MAXIMUM MM
outside_diameter0.96 MILLIMETERS MINIMUM AND 1.04 MILLIMETERS MAXIMUM MM
style_designatorINTERNAL TEETH
end_item_identification4210-01-622-0440; TRUCK, FIRE FIGHTING
part_name_assigned_by_controlling_agencyWASHER, LOCKING IN M12X20X1
surface_treatment_document_and_classificationASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-661-3876
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4317521 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
STYLE DESIGNATOR: INTERNAL TEETH
•
OUTSIDE DIAMETER: 0.96 MILLIMETERS MINIMUM AND 1.04 MILLIMETERS MAXIMUM MM
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
HOLE DIAMETER: 13.00 MILLIMETERS MINIMUM AND 13.27 MILLIMETERS MAXIMUM MM
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT19.98 MILLIMETERS MINIMUM AND 20.50 MILLIMETERS MAXIMUM MM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATORINTERNAL TEETH
OUTSIDE DIAMETER0.96 MILLIMETERS MINIMUM AND 1.04 MILLIMETERS MAXIMUM MM
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER, LOCKING IN M12X20X1
END ITEM IDENTIFICATION4210-01-622-0440; TRUCK, FIRE FIGHTING
MATERIALSTEEL CORROSION RESISTING OVERALL
HOLE DIAMETER13.00 MILLIMETERS MINIMUM AND 13.27 MILLIMETERS MAXIMUM MM
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4317521?
4317521 is a WASHER,LOCK.
What is the NSN for 4317521?
4317521 is cataloged in the U.S. Government catalog under NSN 5310-01-661-3876. This indicates validated use in U.S. government and defense supply chains.
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