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085 310 19 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

085 310 19: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 12.2 MILLIMETERS MINIMUM AND 12.7 MILLIMETERS MAXIMUM MM, hardness_rating: 44.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM, outside_diameter: 21.1 MILLIMETERS MAXIMUM MM, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: ZINC AND CHROMATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-264-9409, 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
085 310 19
NSN: 5310-01-264-9409
FSC: 5310 — Nuts and Washers
CAGE: 81495 — KOEHRING CRANES, INC DBA TEREX CRANES DIV WAVERLY OPERATIONS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter12.2 MILLIMETERS MINIMUM AND 12.7 MILLIMETERS MAXIMUM MM
hardness_rating44.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM
outside_diameter21.1 MILLIMETERS MAXIMUM MM
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentZINC AND CHROMATE OVERALL
material_thickness2.35 MILLIMETERS MINIMUM AND 2.65 MILLIMETERS MAXIMUM MM
end_item_identificationMEDIUM MINE PROTECTED VEHICLE - MMPV
surface_treatment_document_and_classificationDIN267,SHEET 9,CODE A4 NATIONAL SPEC 1ST TREATMENT RESPONSE AND DIN50941,PROCESS GROUP C NATIONAL SPEC 2ND TREATMENT RESPONSE OVERALL
NSN5310-01-264-9409
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 085 310 19 · 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: DIN267,SHEET 9,CODE A4 NATIONAL SPEC 1ST TREATMENT RESPONSE AND DIN50941,PROCESS GROUP C NATIONAL SPEC 2ND TREATMENT RESPONSE OVERALL
•
HARDNESS RATING: 44.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
OUTSIDE DIAMETER: 21.1 MILLIMETERS MAXIMUM MM
•
MATERIAL THICKNESS: 2.35 MILLIMETERS MINIMUM AND 2.65 MILLIMETERS MAXIMUM MM
•
SURFACE TREATMENT: ZINC AND CHROMATE OVERALL
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONDIN267,SHEET 9,CODE A4 NATIONAL SPEC 1ST TREATMENT RESPONSE AND DIN50941,PROCESS GROUP C NATIONAL SPEC 2ND TREATMENT RESPONSE OVERALL
HARDNESS RATING44.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
OUTSIDE DIAMETER21.1 MILLIMETERS MAXIMUM MM
MATERIAL THICKNESS2.35 MILLIMETERS MINIMUM AND 2.65 MILLIMETERS MAXIMUM MM
SURFACE TREATMENTZINC AND CHROMATE OVERALL
END ITEM IDENTIFICATIONMEDIUM MINE PROTECTED VEHICLE - MMPV
MATERIALSTEEL OVERALL
HOLE DIAMETER12.2 MILLIMETERS MINIMUM AND 12.7 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 2
DIN127-B12-A4CSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
B-12-DIN-127Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 085 310 19?
085 310 19 is a WASHER,LOCK.
What parts can replace 085 310 19?
There are 2 known substitutes for 085 310 19: DIN127-B12-A4C, B-12-DIN-127. Substitute compatibility should be verified for your specific system.
What is the NSN for 085 310 19?
085 310 19 is cataloged in the U.S. Government catalog under NSN 5310-01-264-9409. 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.