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MS27183 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.051 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN, hole_diameter: 0.401 INCHES MINIMUM AND 0.421 INCHES MAXIMUM IN, overall_diameter: 0.868 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN, surface_treatment: ZINC NICKEL OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-823-8803, 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
MS27183
NSN: 5310-00-823-8803
FSC: 5310
CAGE: 6R888 — J. T. D. STAMPING CO INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.051 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN
hole_diameter0.401 INCHES MINIMUM AND 0.421 INCHES MAXIMUM IN
overall_diameter0.868 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN
surface_treatmentZINC NICKEL OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
specification/standard_data96906-MS27183L GOVERNMENT SPECIFICATION
material_document_and_classificationASTM A108 OR ASTM A109/A109M OR ASTMA1011/A1011M ANY TEMPER AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyWASHER FLAT (ROUND,STEEL,CADMIUM OR ZINC-NICKEL PLATED)
surface_treatment_document_and_classificationMIL-PRF-32647, TYPE K16 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-823-8803
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS27183 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
NONDEFINITIVE SPEC/STD DATA: A TYPE AND 1 GRADE AND A CLASS
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
OVERALL DIAMETER: 1.305 INCHES MINIMUM AND 1.342 INCHES MAXIMUM IN
•
PERIPHERAL SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
END ITEM IDENTIFICATIONMRAP BUFFALO MK2A2; ARMORED MULTI-PURPOSE VEHICLE (AMPV); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NONDEFINITIVE SPEC/STD DATAA TYPE AND 1 GRADE AND A CLASS
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
OVERALL DIAMETER1.305 INCHES MINIMUM AND 1.342 INCHES MAXIMUM IN
PERIPHERAL SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.649 INCHES MINIMUM AND 0.686 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
4349Interchangeable
interchangeable cross-reference
interchangeable
6 BVD 3X.06Interchangeable
interchangeable cross-reference
interchangeable
3C111-203AInterchangeable
interchangeable cross-reference
interchangeable
415836Interchangeable
interchangeable cross-reference
interchangeable
5905PL0331337Interchangeable
interchangeable cross-reference
interchangeable
93J5R0Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS27183?
MS27183 is a WASHER,FLAT.
What parts can replace MS27183?
There are 26 known substitutes for MS27183: 4349, 6 BVD 3X.06, 3C111-203A and 23 more. Substitute compatibility should be verified for your specific system.
Is MS27183 still available?
MS27183 is currently cancelled.
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Last verified: July 2026