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12418220 — WASHER,SPRING TENSION

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

12418220: WASHER,SPRING TENSION.

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1074 OVERALL, hole_diameter: 50.000 MILLIMETERS NOMINAL MM, outside_diameter: 26.000 MILLIMETERS NOMINAL MM, surface_treatment: PAINT OVERALL, end_item_identification: HIGH-MOBILITY ARTILLERY ROCKET SYSTEM (HIMARS), material_document_and_classification: ASTM A684 ASSN STD 1ST MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-372-3495, 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
12418220
NSN: 5310-01-372-3495
FSC: 5310 — Nuts and Washers
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 1074 OVERALL
hole_diameter50.000 MILLIMETERS NOMINAL MM
outside_diameter26.000 MILLIMETERS NOMINAL MM
surface_treatmentPAINT OVERALL
end_item_identificationHIGH-MOBILITY ARTILLERY ROCKET SYSTEM (HIMARS)
material_document_and_classificationASTM A684 ASSN STD 1ST MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationTT-C-490 ASSN STD 1ST TREATMENT RESPONSE AND MIL-C-46169 MIL SPEC 2ND TREATMENT RESPONSE AND FED-STD-595 FED STD 3RD TREATMENT RESPONSE AND MIL-STD-193 MIL STD 4TH TREATMENT RESPONSE OVERALL
NSN5310-01-372-3495
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12418220 · 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: TT-C-490 ASSN STD 1ST TREATMENT RESPONSE AND MIL-C-46169 MIL SPEC 2ND TREATMENT RESPONSE AND FED-STD-595 FED STD 3RD TREATMENT RESPONSE AND MIL-STD-193 MIL STD 4TH TREATMENT RESPONSE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A684 ASSN STD 1ST MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 26.000 MILLIMETERS NOMINAL MM
•
COLOR: GREEN OVERALL
•
SURFACE TREATMENT: PAINT OVERALL
•
MATERIAL: STEEL COMP 1074 OVERALL
•
HOLE DIAMETER: 50.000 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONTT-C-490 ASSN STD 1ST TREATMENT RESPONSE AND MIL-C-46169 MIL SPEC 2ND TREATMENT RESPONSE AND FED-STD-595 FED STD 3RD TREATMENT RESPONSE AND MIL-STD-193 MIL STD 4TH TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A684 ASSN STD 1ST MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER26.000 MILLIMETERS NOMINAL MM
COLORGREEN OVERALL
SURFACE TREATMENTPAINT OVERALL
END ITEM IDENTIFICATIONHIGH-MOBILITY ARTILLERY ROCKET SYSTEM (HIMARS)
MATERIALSTEEL COMP 1074 OVERALL
HOLE DIAMETER50.000 MILLIMETERS NOMINAL 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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12418220?
12418220 is a WASHER,SPRING TENSION.
What is the NSN for 12418220?
12418220 is cataloged in the U.S. Government catalog under NSN 5310-01-372-3495. 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.